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Date
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alphaindex.h
26.43
KB
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2026-04-09 08:47
appendable.h
8.54
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2026-04-09 08:47
basictz.h
9.99
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2026-04-09 08:47
brkiter.h
28.52
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2026-04-09 08:47
bytestream.h
11.79
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bytestrie.h
20.83
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bytestriebuilder.h
7.44
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2026-04-09 08:47
calendar.h
110.47
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2026-04-09 08:47
caniter.h
7.47
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2026-04-09 08:47
casemap.h
25.42
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2026-04-09 08:47
char16ptr.h
10.79
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2026-04-09 08:47
chariter.h
23.79
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2026-04-09 08:47
choicfmt.h
23.99
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2026-04-09 08:47
coleitr.h
13.78
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2026-04-09 08:47
coll.h
59.5
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2026-04-09 08:47
compactdecimalformat.h
6.88
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2026-04-09 08:47
curramt.h
3.67
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2026-04-09 08:47
currpinf.h
7.3
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2026-04-09 08:47
currunit.h
4.02
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2026-04-09 08:47
datefmt.h
41.29
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2026-04-09 08:47
dbbi.h
1.19
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2026-04-09 08:47
dcfmtsym.h
21.27
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2026-04-09 08:47
decimfmt.h
87.45
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2026-04-09 08:47
displayoptions.h
7.08
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2026-04-09 08:47
docmain.h
7.66
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2026-04-09 08:47
dtfmtsym.h
41.04
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2026-04-09 08:47
dtintrv.h
3.84
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2026-04-09 08:47
dtitvfmt.h
49.2
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2026-04-09 08:47
dtitvinf.h
18.54
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2026-04-09 08:47
dtptngen.h
29.28
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2026-04-09 08:47
dtrule.h
8.66
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2026-04-09 08:47
edits.h
20.74
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2026-04-09 08:47
enumset.h
2.08
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2026-04-09 08:47
errorcode.h
4.84
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2026-04-09 08:47
fieldpos.h
8.69
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2026-04-09 08:47
filteredbrk.h
5.37
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2026-04-09 08:47
fmtable.h
24.36
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2026-04-09 08:47
format.h
12.78
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2026-04-09 08:47
formattednumber.h
6.25
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2026-04-09 08:47
formattedvalue.h
9.75
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2026-04-09 08:47
fpositer.h
3.03
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2026-04-09 08:47
gender.h
3.35
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2026-04-09 08:47
gregocal.h
30.05
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2026-04-09 08:47
icudataver.h
1.02
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2026-04-09 08:47
icuplug.h
12.1
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2026-04-09 08:47
idna.h
12.93
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2026-04-09 08:47
listformatter.h
8.59
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2026-04-09 08:47
localebuilder.h
11.09
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2026-04-09 08:47
localematcher.h
26.86
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2026-04-09 08:47
localpointer.h
19.52
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locdspnm.h
7.12
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2026-04-09 08:47
locid.h
53.98
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2026-04-09 08:47
measfmt.h
11.41
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2026-04-09 08:47
measunit.h
133.12
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2026-04-09 08:47
measure.h
4.63
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2026-04-09 08:47
messageformat2.h
21.59
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2026-04-09 08:47
messageformat2_arguments.h
3.84
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2026-04-09 08:47
messageformat2_data_model.h
96.61
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2026-04-09 08:47
messageformat2_data_model_names.h
784
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messageformat2_formattable.h
39.37
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2026-04-09 08:47
messageformat2_function_registry.h
18.07
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messagepattern.h
33.79
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msgfmt.h
44.94
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normalizer2.h
34.68
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normlzr.h
30.79
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nounit.h
2.24
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2026-04-09 08:47
numberformatter.h
90.72
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2026-04-09 08:47
numberrangeformatter.h
25.68
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2026-04-09 08:47
numfmt.h
50.16
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2026-04-09 08:47
numsys.h
7.22
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2026-04-09 08:47
parseerr.h
3.08
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2026-04-09 08:47
parsepos.h
5.56
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2026-04-09 08:47
platform.h
27.19
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2026-04-09 08:47
plurfmt.h
25.46
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2026-04-09 08:47
plurrule.h
20.63
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2026-04-09 08:47
ptypes.h
2.16
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2026-04-09 08:47
putil.h
6.32
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2026-04-09 08:47
rbbi.h
31.73
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2026-04-09 08:47
rbnf.h
57.19
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2026-04-09 08:47
rbtz.h
15.75
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2026-04-09 08:47
regex.h
83.83
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2026-04-09 08:47
region.h
9.2
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2026-04-09 08:47
reldatefmt.h
22.69
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2026-04-09 08:47
rep.h
9.38
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2026-04-09 08:47
resbund.h
18.02
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2026-04-09 08:47
schriter.h
6.09
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2026-04-09 08:47
scientificnumberformatter.h
6.44
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2026-04-09 08:47
search.h
22.21
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2026-04-09 08:47
selfmt.h
14.35
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2026-04-09 08:47
simpleformatter.h
12.6
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2026-04-09 08:47
simplenumberformatter.h
8.87
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2026-04-09 08:47
simpletz.h
45.62
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2026-04-09 08:47
smpdtfmt.h
57.57
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2026-04-09 08:47
sortkey.h
11.13
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2026-04-09 08:47
std_string.h
1.05
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2026-04-09 08:47
strenum.h
9.96
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2026-04-09 08:47
stringoptions.h
5.79
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2026-04-09 08:47
stringpiece.h
10.29
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stringtriebuilder.h
15.53
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2026-04-09 08:47
stsearch.h
21.43
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2026-04-09 08:47
symtable.h
4.28
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2026-04-09 08:47
tblcoll.h
38.79
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2026-04-09 08:47
timezone.h
45.59
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2026-04-09 08:47
tmunit.h
3.37
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2026-04-09 08:47
tmutamt.h
4.9
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2026-04-09 08:47
tmutfmt.h
7.42
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2026-04-09 08:47
translit.h
65.81
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2026-04-09 08:47
tzfmt.h
44.76
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2026-04-09 08:47
tznames.h
16.85
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2026-04-09 08:47
tzrule.h
34.81
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tztrans.h
6.11
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ubidi.h
89.61
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2026-04-09 08:47
ubiditransform.h
12.71
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ubrk.h
24.43
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2026-04-09 08:47
ucal.h
63.95
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ucasemap.h
15.27
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ucat.h
5.35
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uchar.h
152.33
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2026-04-09 08:47
ucharstrie.h
22.59
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2026-04-09 08:47
ucharstriebuilder.h
7.48
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2026-04-09 08:47
uchriter.h
13.24
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2026-04-09 08:47
uclean.h
11.21
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2026-04-09 08:47
ucnv.h
83.34
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ucnv_cb.h
6.58
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ucnv_err.h
20.98
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ucnvsel.h
6.24
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2026-04-09 08:47
ucol.h
67.35
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2026-04-09 08:47
ucoleitr.h
9.82
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2026-04-09 08:47
uconfig.h
12.56
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2026-04-09 08:47
ucpmap.h
5.54
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ucptrie.h
22.51
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ucsdet.h
14.69
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ucurr.h
16.72
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2026-04-09 08:47
udat.h
62.66
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2026-04-09 08:47
udata.h
15.63
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2026-04-09 08:47
udateintervalformat.h
11.93
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udatpg.h
30.13
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udisplaycontext.h
5.94
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udisplayoptions.h
8.86
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2026-04-09 08:47
uenum.h
7.79
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2026-04-09 08:47
ufieldpositer.h
4.41
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2026-04-09 08:47
uformattable.h
10.97
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2026-04-09 08:47
uformattednumber.h
8.09
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2026-04-09 08:47
uformattedvalue.h
12.25
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ugender.h
2.06
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uidna.h
34.12
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uiter.h
22.75
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uldnames.h
10.48
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ulistformatter.h
10.78
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2026-04-09 08:47
uloc.h
55.38
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ulocale.h
6.31
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ulocbuilder.h
16.69
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ulocdata.h
11.3
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umachine.h
15.25
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umisc.h
1.34
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umsg.h
24.25
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umutablecptrie.h
8.3
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unifilt.h
4
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unifunct.h
4.05
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unimatch.h
6.1
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unirepl.h
3.38
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uniset.h
70.18
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unistr.h
184.51
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unorm.h
20.55
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unorm2.h
25.66
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unum.h
55.16
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unumberformatter.h
19.68
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unumberoptions.h
5.23
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unumberrangeformatter.h
15.35
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unumsys.h
7.26
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uobject.h
10.6
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upluralrules.h
8.79
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uregex.h
71.99
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uregion.h
9.81
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ureldatefmt.h
16.98
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urename.h
142.22
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urep.h
5.38
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ures.h
36.65
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uscript.h
28.95
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usearch.h
39.21
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uset.h
63.03
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usetiter.h
9.63
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ushape.h
18
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usimplenumberformatter.h
7.31
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uspoof.h
80
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usprep.h
8.19
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ustdio.h
38.58
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ustream.h
1.89
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ustring.h
72.16
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ustringtrie.h
3.15
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utext.h
58.1
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utf.h
8.65
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utf16.h
23.35
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utf32.h
763
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utf8.h
31.65
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utf_old.h
45.85
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utfiterator.h
95.02
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utfstring.h
4.89
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utmscale.h
13.78
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utrace.h
17.18
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utrans.h
25.54
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utypes.h
36.73
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uvernum.h
6.33
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uversion.h
8.21
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2026-04-09 08:47
vtzone.h
20.68
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2026-04-09 08:47
Save
Rename
// © 2018 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html #ifndef __NUMBERRANGEFORMATTER_H__ #define __NUMBERRANGEFORMATTER_H__ #include "unicode/utypes.h" #if U_SHOW_CPLUSPLUS_API #if !UCONFIG_NO_FORMATTING #include <atomic> #include "unicode/appendable.h" #include "unicode/fieldpos.h" #include "unicode/formattedvalue.h" #include "unicode/fpositer.h" #include "unicode/numberformatter.h" #include "unicode/unumberrangeformatter.h" /** * \file * \brief C++ API: Library for localized formatting of number, currency, and unit ranges. * * The main entrypoint to the formatting of ranges of numbers, including currencies and other units of measurement. * <p> * Usage example: * <p> * <pre> * NumberRangeFormatter::with() * .identityFallback(UNUM_IDENTITY_FALLBACK_APPROXIMATELY_OR_SINGLE_VALUE) * .numberFormatterFirst(NumberFormatter::with().adoptUnit(MeasureUnit::createMeter())) * .numberFormatterSecond(NumberFormatter::with().adoptUnit(MeasureUnit::createKilometer())) * .locale("en-GB") * .formatFormattableRange(750, 1.2, status) * .toString(status); * // => "750 m - 1.2 km" * </pre> * <p> * Like NumberFormatter, NumberRangeFormatter instances (i.e., LocalizedNumberRangeFormatter * and UnlocalizedNumberRangeFormatter) are immutable and thread-safe. This API is based on the * <em>fluent</em> design pattern popularized by libraries such as Google's Guava. * * @author Shane Carr */ U_NAMESPACE_BEGIN // Forward declarations: class PluralRules; namespace number { // icu::number // Forward declarations: class UnlocalizedNumberRangeFormatter; class LocalizedNumberRangeFormatter; class FormattedNumberRange; namespace impl { // Forward declarations: struct RangeMacroProps; class DecimalQuantity; class UFormattedNumberRangeData; class NumberRangeFormatterImpl; struct UFormattedNumberRangeImpl; } // namespace impl // Other helper classes would go here, but there are none. namespace impl { // icu::number::impl // Do not enclose entire MacroProps with #ifndef U_HIDE_INTERNAL_API, needed for a protected field /** @internal */ struct RangeMacroProps : public UMemory { /** @internal */ UnlocalizedNumberFormatter formatter1; // = NumberFormatter::with(); /** @internal */ UnlocalizedNumberFormatter formatter2; // = NumberFormatter::with(); /** @internal */ bool singleFormatter = true; /** @internal */ UNumberRangeCollapse collapse = UNUM_RANGE_COLLAPSE_AUTO; /** @internal */ UNumberRangeIdentityFallback identityFallback = UNUM_IDENTITY_FALLBACK_APPROXIMATELY; /** @internal */ Locale locale; // NOTE: Uses default copy and move constructors. /** * Check all members for errors. * @internal */ bool copyErrorTo(UErrorCode &status) const { return formatter1.copyErrorTo(status) || formatter2.copyErrorTo(status); } }; } // namespace impl /** * An abstract base class for specifying settings related to number formatting. This class is implemented by * {@link UnlocalizedNumberRangeFormatter} and {@link LocalizedNumberRangeFormatter}. This class is not intended for * public subclassing. */ template<typename Derived> class U_I18N_API NumberRangeFormatterSettings { public: /** * Sets the NumberFormatter instance to use for the numbers in the range. The same formatter is applied to both * sides of the range. * <p> * The NumberFormatter instances must not have a locale applied yet; the locale specified on the * NumberRangeFormatter will be used. * * @param formatter * The formatter to use for both numbers in the range. * @return The fluent chain. * @stable ICU 63 */ Derived numberFormatterBoth(const UnlocalizedNumberFormatter &formatter) const &; /** * Overload of numberFormatterBoth() for use on an rvalue reference. * * @param formatter * The formatter to use for both numbers in the range. * @return The fluent chain. * @see #numberFormatterBoth * @stable ICU 63 */ Derived numberFormatterBoth(const UnlocalizedNumberFormatter &formatter) &&; /** * Overload of numberFormatterBoth() for use on an rvalue reference. * * @param formatter * The formatter to use for both numbers in the range. * @return The fluent chain. * @see #numberFormatterBoth * @stable ICU 63 */ Derived numberFormatterBoth(UnlocalizedNumberFormatter &&formatter) const &; /** * Overload of numberFormatterBoth() for use on an rvalue reference. * * @param formatter * The formatter to use for both numbers in the range. * @return The fluent chain. * @see #numberFormatterBoth * @stable ICU 63 */ Derived numberFormatterBoth(UnlocalizedNumberFormatter &&formatter) &&; /** * Sets the NumberFormatter instance to use for the first number in the range. * <p> * The NumberFormatter instances must not have a locale applied yet; the locale specified on the * NumberRangeFormatter will be used. * * @param formatterFirst * The formatter to use for the first number in the range. * @return The fluent chain. * @stable ICU 63 */ Derived numberFormatterFirst(const UnlocalizedNumberFormatter &formatterFirst) const &; /** * Overload of numberFormatterFirst() for use on an rvalue reference. * * @param formatterFirst * The formatter to use for the first number in the range. * @return The fluent chain. * @see #numberFormatterFirst * @stable ICU 63 */ Derived numberFormatterFirst(const UnlocalizedNumberFormatter &formatterFirst) &&; /** * Overload of numberFormatterFirst() for use on an rvalue reference. * * @param formatterFirst * The formatter to use for the first number in the range. * @return The fluent chain. * @see #numberFormatterFirst * @stable ICU 63 */ Derived numberFormatterFirst(UnlocalizedNumberFormatter &&formatterFirst) const &; /** * Overload of numberFormatterFirst() for use on an rvalue reference. * * @param formatterFirst * The formatter to use for the first number in the range. * @return The fluent chain. * @see #numberFormatterFirst * @stable ICU 63 */ Derived numberFormatterFirst(UnlocalizedNumberFormatter &&formatterFirst) &&; /** * Sets the NumberFormatter instance to use for the second number in the range. * <p> * The NumberFormatter instances must not have a locale applied yet; the locale specified on the * NumberRangeFormatter will be used. * * @param formatterSecond * The formatter to use for the second number in the range. * @return The fluent chain. * @stable ICU 63 */ Derived numberFormatterSecond(const UnlocalizedNumberFormatter &formatterSecond) const &; /** * Overload of numberFormatterSecond() for use on an rvalue reference. * * @param formatterSecond * The formatter to use for the second number in the range. * @return The fluent chain. * @see #numberFormatterSecond * @stable ICU 63 */ Derived numberFormatterSecond(const UnlocalizedNumberFormatter &formatterSecond) &&; /** * Overload of numberFormatterSecond() for use on an rvalue reference. * * @param formatterSecond * The formatter to use for the second number in the range. * @return The fluent chain. * @see #numberFormatterSecond * @stable ICU 63 */ Derived numberFormatterSecond(UnlocalizedNumberFormatter &&formatterSecond) const &; /** * Overload of numberFormatterSecond() for use on an rvalue reference. * * @param formatterSecond * The formatter to use for the second number in the range. * @return The fluent chain. * @see #numberFormatterSecond * @stable ICU 63 */ Derived numberFormatterSecond(UnlocalizedNumberFormatter &&formatterSecond) &&; /** * Sets the aggressiveness of "collapsing" fields across the range separator. Possible values: * <p> * <ul> * <li>ALL: "3-5K miles"</li> * <li>UNIT: "3K - 5K miles"</li> * <li>NONE: "3K miles - 5K miles"</li> * <li>AUTO: usually UNIT or NONE, depending on the locale and formatter settings</li> * </ul> * <p> * The default value is AUTO. * * @param collapse * The collapsing strategy to use for this range. * @return The fluent chain. * @stable ICU 63 */ Derived collapse(UNumberRangeCollapse collapse) const &; /** * Overload of collapse() for use on an rvalue reference. * * @param collapse * The collapsing strategy to use for this range. * @return The fluent chain. * @see #collapse * @stable ICU 63 */ Derived collapse(UNumberRangeCollapse collapse) &&; /** * Sets the behavior when the two sides of the range are the same. This could happen if the same two numbers are * passed to the formatFormattableRange function, or if different numbers are passed to the function but they * become the same after rounding rules are applied. Possible values: * <p> * <ul> * <li>SINGLE_VALUE: "5 miles"</li> * <li>APPROXIMATELY_OR_SINGLE_VALUE: "~5 miles" or "5 miles", depending on whether the number was the same before * rounding was applied</li> * <li>APPROXIMATELY: "~5 miles"</li> * <li>RANGE: "5-5 miles" (with collapse=UNIT)</li> * </ul> * <p> * The default value is APPROXIMATELY. * * @param identityFallback * The strategy to use when formatting two numbers that end up being the same. * @return The fluent chain. * @stable ICU 63 */ Derived identityFallback(UNumberRangeIdentityFallback identityFallback) const &; /** * Overload of identityFallback() for use on an rvalue reference. * * @param identityFallback * The strategy to use when formatting two numbers that end up being the same. * @return The fluent chain. * @see #identityFallback * @stable ICU 63 */ Derived identityFallback(UNumberRangeIdentityFallback identityFallback) &&; /** * Returns the current (Un)LocalizedNumberRangeFormatter as a LocalPointer * wrapping a heap-allocated copy of the current object. * * This is equivalent to new-ing the move constructor with a value object * as the argument. * * @return A wrapped (Un)LocalizedNumberRangeFormatter pointer, or a wrapped * nullptr on failure. * @stable ICU 64 */ LocalPointer<Derived> clone() const &; /** * Overload of clone for use on an rvalue reference. * * @return A wrapped (Un)LocalizedNumberRangeFormatter pointer, or a wrapped * nullptr on failure. * @stable ICU 64 */ LocalPointer<Derived> clone() &&; /** * Sets the UErrorCode if an error occurred in the fluent chain. * Preserves older error codes in the outErrorCode. * @return true if U_FAILURE(outErrorCode) * @stable ICU 63 */ UBool copyErrorTo(UErrorCode &outErrorCode) const { if (U_FAILURE(outErrorCode)) { // Do not overwrite the older error code return true; } fMacros.copyErrorTo(outErrorCode); return U_FAILURE(outErrorCode); } // NOTE: Uses default copy and move constructors. private: impl::RangeMacroProps fMacros; // Don't construct me directly! Use (Un)LocalizedNumberFormatter. NumberRangeFormatterSettings() = default; friend class LocalizedNumberRangeFormatter; friend class UnlocalizedNumberRangeFormatter; }; // Explicit instantiations in source/i18n/numrange_fluent.cpp. // (MSVC treats imports/exports of explicit instantiations differently.) #ifndef _MSC_VER extern template class NumberRangeFormatterSettings<UnlocalizedNumberRangeFormatter>; extern template class NumberRangeFormatterSettings<LocalizedNumberRangeFormatter>; #endif /** * A NumberRangeFormatter that does not yet have a locale. In order to format, a locale must be specified. * * Instances of this class are immutable and thread-safe. * * @see NumberRangeFormatter * @stable ICU 63 */ class U_I18N_API UnlocalizedNumberRangeFormatter : public NumberRangeFormatterSettings<UnlocalizedNumberRangeFormatter>, public UMemory { public: /** * Associate the given locale with the number range formatter. The locale is used for picking the * appropriate symbols, formats, and other data for number display. * * @param locale * The locale to use when loading data for number formatting. * @return The fluent chain. * @stable ICU 63 */ LocalizedNumberRangeFormatter locale(const icu::Locale &locale) const &; /** * Overload of locale() for use on an rvalue reference. * * @param locale * The locale to use when loading data for number formatting. * @return The fluent chain. * @see #locale * @stable ICU 63 */ LocalizedNumberRangeFormatter locale(const icu::Locale &locale) &&; /** * Default constructor: puts the formatter into a valid but undefined state. * * @stable ICU 63 */ UnlocalizedNumberRangeFormatter() = default; /** * Returns a copy of this UnlocalizedNumberRangeFormatter. * @stable ICU 63 */ UnlocalizedNumberRangeFormatter(const UnlocalizedNumberRangeFormatter &other); /** * Move constructor: * The source UnlocalizedNumberRangeFormatter will be left in a valid but undefined state. * @stable ICU 63 */ UnlocalizedNumberRangeFormatter(UnlocalizedNumberRangeFormatter&& src) noexcept; /** * Copy assignment operator. * @stable ICU 63 */ UnlocalizedNumberRangeFormatter& operator=(const UnlocalizedNumberRangeFormatter& other); /** * Move assignment operator: * The source UnlocalizedNumberRangeFormatter will be left in a valid but undefined state. * @stable ICU 63 */ UnlocalizedNumberRangeFormatter& operator=(UnlocalizedNumberRangeFormatter&& src) noexcept; private: explicit UnlocalizedNumberRangeFormatter( const NumberRangeFormatterSettings<UnlocalizedNumberRangeFormatter>& other); explicit UnlocalizedNumberRangeFormatter( NumberRangeFormatterSettings<UnlocalizedNumberRangeFormatter>&& src) noexcept; explicit UnlocalizedNumberRangeFormatter(const impl::RangeMacroProps ¯os); explicit UnlocalizedNumberRangeFormatter(impl::RangeMacroProps &¯os); // To give the fluent setters access to this class's constructor: friend class NumberRangeFormatterSettings<UnlocalizedNumberRangeFormatter>; // To give NumberRangeFormatter::with() access to this class's constructor: friend class NumberRangeFormatter; // To give LNRF::withoutLocale() access to this class's constructor: friend class LocalizedNumberRangeFormatter; }; /** * A NumberRangeFormatter that has a locale associated with it; this means .formatRange() methods are available. * * Instances of this class are immutable and thread-safe. * * @see NumberFormatter * @stable ICU 63 */ class U_I18N_API_CLASS LocalizedNumberRangeFormatter : public NumberRangeFormatterSettings<LocalizedNumberRangeFormatter>, public UMemory { public: /** * Format the given Formattables to a string using the settings specified in the NumberRangeFormatter fluent setting * chain. * * @param first * The first number in the range, usually to the left in LTR locales. * @param second * The second number in the range, usually to the right in LTR locales. * @param status * Set if an error occurs while formatting. * @return A FormattedNumberRange object; call .toString() to get the string. * @stable ICU 63 */ U_I18N_API FormattedNumberRange formatFormattableRange( const Formattable& first, const Formattable& second, UErrorCode& status) const; /** * Disassociate the locale from this formatter. * * @return The fluent chain. * @stable ICU 75 */ U_I18N_API UnlocalizedNumberRangeFormatter withoutLocale() const &; /** * Overload of withoutLocale() for use on an rvalue reference. * * @return The fluent chain. * @see #withoutLocale * @stable ICU 75 */ U_I18N_API UnlocalizedNumberRangeFormatter withoutLocale() &&; /** * Default constructor: puts the formatter into a valid but undefined state. * * @stable ICU 63 */ U_I18N_API LocalizedNumberRangeFormatter() = default; /** * Returns a copy of this LocalizedNumberRangeFormatter. * @stable ICU 63 */ U_I18N_API LocalizedNumberRangeFormatter(const LocalizedNumberRangeFormatter &other); /** * Move constructor: * The source LocalizedNumberRangeFormatter will be left in a valid but undefined state. * @stable ICU 63 */ U_I18N_API LocalizedNumberRangeFormatter(LocalizedNumberRangeFormatter&& src) noexcept; /** * Copy assignment operator. * @stable ICU 63 */ U_I18N_API LocalizedNumberRangeFormatter& operator=(const LocalizedNumberRangeFormatter& other); /** * Move assignment operator: * The source LocalizedNumberRangeFormatter will be left in a valid but undefined state. * @stable ICU 63 */ U_I18N_API LocalizedNumberRangeFormatter& operator=(LocalizedNumberRangeFormatter&& src) noexcept; #ifndef U_HIDE_INTERNAL_API /** * @param results * The results object. This method will mutate it to save the results. * @param equalBeforeRounding * Whether the number was equal before copying it into a DecimalQuantity. * Used for determining the identity fallback behavior. * @param status * Set if an error occurs while formatting. * @internal */ U_I18N_API void formatImpl(impl::UFormattedNumberRangeData &results, bool equalBeforeRounding, UErrorCode &status) const; #endif /* U_HIDE_INTERNAL_API */ /** * Destruct this LocalizedNumberRangeFormatter, cleaning up any memory it might own. * @stable ICU 63 */ U_I18N_API ~LocalizedNumberRangeFormatter(); private: std::atomic<impl::NumberRangeFormatterImpl*> fAtomicFormatter = {}; const impl::NumberRangeFormatterImpl* getFormatter(UErrorCode& stauts) const; explicit LocalizedNumberRangeFormatter( const NumberRangeFormatterSettings<LocalizedNumberRangeFormatter>& other); explicit LocalizedNumberRangeFormatter( NumberRangeFormatterSettings<LocalizedNumberRangeFormatter>&& src) noexcept; LocalizedNumberRangeFormatter(const impl::RangeMacroProps ¯os, const Locale &locale); LocalizedNumberRangeFormatter(impl::RangeMacroProps &¯os, const Locale &locale); // To give the fluent setters access to this class's constructor: friend class NumberRangeFormatterSettings<UnlocalizedNumberRangeFormatter>; friend class NumberRangeFormatterSettings<LocalizedNumberRangeFormatter>; // To give UnlocalizedNumberRangeFormatter::locale() access to this class's constructor: friend class UnlocalizedNumberRangeFormatter; }; /** * The result of a number range formatting operation. This class allows the result to be exported in several data types, * including a UnicodeString and a FieldPositionIterator. * * Instances of this class are immutable and thread-safe. * * @stable ICU 63 */ class U_I18N_API FormattedNumberRange : public UMemory, public FormattedValue { public: // Copybrief: this method is older than the parent method /** * @copybrief FormattedValue::toString() * * For more information, see FormattedValue::toString() * * @stable ICU 63 */ UnicodeString toString(UErrorCode& status) const override; // Copydoc: this method is new in ICU 64 /** @copydoc FormattedValue::toTempString() */ UnicodeString toTempString(UErrorCode& status) const override; // Copybrief: this method is older than the parent method /** * @copybrief FormattedValue::appendTo() * * For more information, see FormattedValue::appendTo() * * @stable ICU 63 */ Appendable &appendTo(Appendable &appendable, UErrorCode& status) const override; // Copydoc: this method is new in ICU 64 /** @copydoc FormattedValue::nextPosition() */ UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const override; /** * Extracts the formatted range as a pair of decimal numbers. This endpoint * is useful for obtaining the exact number being printed after scaling * and rounding have been applied by the number range formatting pipeline. * * The syntax of the unformatted numbers is a "numeric string" * as defined in the Decimal Arithmetic Specification, available at * http://speleotrove.com/decimal * * Example C++17 call site: * * auto [ first, second ] = range.getDecimalNumbers<std::string>(status); * * @tparam StringClass A string class compatible with StringByteSink; * for example, std::string. * @param status Set if an error occurs. * @return A pair of StringClasses containing the numeric strings. * @stable ICU 68 */ template<typename StringClass> inline std::pair<StringClass, StringClass> getDecimalNumbers(UErrorCode& status) const; /** * Returns whether the pair of numbers was successfully formatted as a range or whether an identity fallback was * used. For example, if the first and second number were the same either before or after rounding occurred, an * identity fallback was used. * * @return An indication the resulting identity situation in the formatted number range. * @stable ICU 63 * @see UNumberRangeIdentityFallback */ UNumberRangeIdentityResult getIdentityResult(UErrorCode& status) const; /** * Default constructor; makes an empty FormattedNumberRange. * @stable ICU 70 */ FormattedNumberRange() : fData(nullptr), fErrorCode(U_INVALID_STATE_ERROR) {} /** * Copying not supported; use move constructor instead. */ FormattedNumberRange(const FormattedNumberRange&) = delete; /** * Copying not supported; use move assignment instead. */ FormattedNumberRange& operator=(const FormattedNumberRange&) = delete; /** * Move constructor: * Leaves the source FormattedNumberRange in an undefined state. * @stable ICU 63 */ FormattedNumberRange(FormattedNumberRange&& src) noexcept; /** * Move assignment: * Leaves the source FormattedNumberRange in an undefined state. * @stable ICU 63 */ FormattedNumberRange& operator=(FormattedNumberRange&& src) noexcept; /** * Destruct an instance of FormattedNumberRange, cleaning up any memory it might own. * @stable ICU 63 */ ~FormattedNumberRange(); private: // Can't use LocalPointer because UFormattedNumberRangeData is forward-declared const impl::UFormattedNumberRangeData *fData; // Error code for the terminal methods UErrorCode fErrorCode; /** * Internal constructor from data type. Adopts the data pointer. */ explicit FormattedNumberRange(impl::UFormattedNumberRangeData *results) : fData(results), fErrorCode(U_ZERO_ERROR) {} explicit FormattedNumberRange(UErrorCode errorCode) : fData(nullptr), fErrorCode(errorCode) {} void getDecimalNumbers(ByteSink& sink1, ByteSink& sink2, UErrorCode& status) const; const impl::UFormattedNumberRangeData* getData(UErrorCode& status) const; // To allow PluralRules to access the underlying data friend class ::icu::PluralRules; // To give LocalizedNumberRangeFormatter format methods access to this class's constructor: friend class LocalizedNumberRangeFormatter; // To give C API access to internals friend struct impl::UFormattedNumberRangeImpl; }; // inline impl of @stable ICU 68 method template<typename StringClass> std::pair<StringClass, StringClass> FormattedNumberRange::getDecimalNumbers(UErrorCode& status) const { StringClass str1; StringClass str2; StringByteSink<StringClass> sink1(&str1); StringByteSink<StringClass> sink2(&str2); getDecimalNumbers(sink1, sink2, status); return std::make_pair(str1, str2); } /** * See the main description in numberrangeformatter.h for documentation and examples. * * @stable ICU 63 */ class U_I18N_API NumberRangeFormatter final { public: /** * Call this method at the beginning of a NumberRangeFormatter fluent chain in which the locale is not currently * known at the call site. * * @return An {@link UnlocalizedNumberRangeFormatter}, to be used for chaining. * @stable ICU 63 */ static UnlocalizedNumberRangeFormatter with(); /** * Call this method at the beginning of a NumberRangeFormatter fluent chain in which the locale is known at the call * site. * * @param locale * The locale from which to load formats and symbols for number range formatting. * @return A {@link LocalizedNumberRangeFormatter}, to be used for chaining. * @stable ICU 63 */ static LocalizedNumberRangeFormatter withLocale(const Locale &locale); /** * Use factory methods instead of the constructor to create a NumberFormatter. */ NumberRangeFormatter() = delete; }; } // namespace number U_NAMESPACE_END #endif /* #if !UCONFIG_NO_FORMATTING */ #endif /* U_SHOW_CPLUSPLUS_API */ #endif // __NUMBERRANGEFORMATTER_H__