-
Notifications
You must be signed in to change notification settings - Fork 11
Expand file tree
/
Copy pathfeatures_cpp17.yaml
More file actions
1061 lines (971 loc) · 23.7 KB
/
features_cpp17.yaml
File metadata and controls
1061 lines (971 loc) · 23.7 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
---
features:
- desc: "New Rules for `auto` deduction from braced-init-list"
paper: N3922
support:
- GCC 5
- Clang 3.8
- MSVC 14.0
- Xcode
- desc: "Allow `typename` in a template template parameter"
paper: N4051
support:
- GCC 5
- Clang 3.5
- MSVC 14.0
- Xcode
- desc: "Removing trigraphs??!"
paper: N4086
support:
- GCC 5
- Clang 3.5
- MSVC 10.0
- Xcode
- desc: "Nested `namespace` definition"
paper: N4230
summary: "Define nested namespaces with single declaration."
support:
- GCC 6
- Clang 3.6
- MSVC 14.0
- Xcode
- desc: "Extending `static_assert`, v2"
paper: N3928
support:
- GCC 6
- Clang 2.5
- MSVC 14.10
- Xcode
ftm:
- name: __cpp_static_assert
value: 201411L
desc: "`static_assert()` with no message (single argument)"
- desc: "Attributes for namespaces and enumerators"
paper: N4266
support:
- GCC 4.9 (partial)
- GCC 6
- Clang 3.6
- MSVC 14.0
- Xcode
hints:
- target: GCC 4.9
msg: "Only attributes for namespaces are supported."
ftm:
- name: __cpp_enumerator_attributes
value: 201411L
desc: Attributes for enumerators are supported
- name: __cpp_namespace_attributes
value: 201411L
desc: Attributes for namespaces are supported
- desc: "Adding `u8` character literals"
paper: N4267
support:
- GCC 6
- Clang 3.6
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_nontype_template_args
value: 201411L
desc: Allow constant evaluation for all constant template arguments
- desc: "Allow constant evaluation for all non-type template arguments"
paper: N4268
support:
- GCC 6
- Clang 3.6
- MSVC 14.12
- Xcode
- desc: "Unary folds and empty parameter packs"
paper: P0036
support:
- GCC 6
- Clang 3.9
- MSVC 14.12
- Xcode
- desc: "Remove deprecated use of the `register` keyword"
paper: P0001
support:
- GCC 7
- Clang 3.8
- MSVC 14.11
- Xcode
- desc: "Remove deprecated `operator++(bool)`"
paper: P0002
support:
- GCC 7
- Clang 3.8
- MSVC 14.11
- Xcode
- desc: "Make exception specifications be part of the type system"
paper: P0012
support:
- GCC 7
- Clang 4
- MSVC 14.12
- Xcode
ftm:
- name: __cpp_noexcept_function_type
value: 201510L
- desc: "`__has_include`"
paper: P0061
summary: "Check if a header file exists."
support:
- GCC 5
- Clang
- MSVC 14.11
- Xcode
- desc: "Rewording inheriting constructors"
paper: P0136
support:
- GCC 7
- Clang 3.9
- MSVC 14.14 (hint)
- Xcode
hints:
- target: MSVC 14.14
msg: "Not supported in C++14 mode."
ftm:
- name: __cpp_inheriting_constructors
value: 201511L
- desc: "Extension to aggregate initialization"
paper: P0017
support:
- GCC 7
- Clang 3.9
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_aggregate_bases
value: 201603L
- desc: "Folding expressions"
paper: N4295
summary: "Reduce parameter packs with operators."
content: fold-expressions.md
support:
- GCC 6
- Clang 3.6
- MSVC 14.12
- Xcode
ftm:
- name: __cpp_fold_expressions
value: 201603L
- desc: "Lambda capture of `*this` by value as `[=, *this]`"
paper: P0018
summary: "Capture the current object by value with `[*this]`."
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
- desc: "Construction rules for `enum class` values"
paper: P0138
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
- desc: "`constexpr` lambdas"
paper: P0170
summary: "Lambdas can be used in constant expressions."
support:
- GCC 7
- Clang 5
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_constexpr
value: 201603L
- desc: "Generalizing the range-based `for` loop"
paper: P0184
support:
- GCC 6
- Clang 3.9
- MSVC 14.10
- Xcode
ftm:
- name: __cpp_range_based_for
value: 201603L
- desc: "Attribute `[[fallthrough]]`"
paper: P0188
summary: "Indicate intentional switch case fallthrough."
support:
- GCC 7
- Clang 3.9
- MSVC 14.10
- Xcode
- desc: "Attribute `[[nodiscard]]`"
paper: P0189
summary: "Warn when return value is discarded."
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
- desc: "Attribute `[[maybe_unused]]`"
paper: P0212
summary: "Suppress warnings for unused entities."
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
- desc: "Hexadecimal floating literals"
paper: P0245
support:
- GCC 3
- Clang
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_hex_float
value: 201603L
- desc: "Using attribute namespaces without repetition"
paper: P0028
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
- desc: "Dynamic memory allocation for over-aligned data"
paper: P0035
support:
- GCC 7
- Clang 4
- MSVC 14.12
- Xcode 10
ftm:
- name: __cpp_aligned_new
value: 201606L
- desc: "Declaring non-type template parameters with `auto`"
paper: P0127
summary: "Use `auto` to deduce non-type template parameter types."
support:
- GCC 7
- Clang 4
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_nontype_template_parameter_auto
value: 201606L
- desc: "Guaranteed copy elision"
paper: P0135
summary: "Certain copies must be elided, not just allowed."
content: guaranteed-copy-elision.md
support:
- GCC 7
- Clang 4
- MSVC 14.13
- Xcode
ftm:
- name: __cpp_guaranteed_copy_elision
value: 201606L
- desc: "Replacement of class objects containing reference members"
paper: P0137
support:
- GCC 7
- Clang 6
- MSVC 14.14
- Xcode
- desc: "Refining expression evaluation order for idiomatic C++"
paper: P0145
support:
- GCC 7
- Clang 4
- MSVC 14.14
- Xcode
- desc: "Proposed wording for structured bindings"
paper: P0217
summary: "Decompose objects into named variables."
content: structured-bindings.md
support:
- GCC 7
- Clang 4
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_structured_bindings
value: 201606L
- desc: "Standard and non-standard attributes (ignoring unknown attributes)"
paper: P0283
support:
- GCC
- Clang 3.9
- MSVC 14.0
- Xcode
- desc: "`constexpr if` statements"
paper: P0292
summary: "Compile-time conditional compilation within functions."
content: if-constexpr.md
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_if_constexpr
value: 201606L
- desc: "Init-statements for `if` and `switch`"
paper: P0305
summary: "Initialize variables within if/switch statements."
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
- desc: "`inline` variables"
paper: P0386
summary: "Variables can be `inline`, allowing definition in headers."
content: inline-variables.md
support:
- GCC 7
- Clang 3.9
- MSVC 14.12
- Xcode
ftm:
- name: __cpp_inline_variables
value: 201606L
- desc: "Removing deprecated exception specifications from C++17"
paper: P0003
support:
- GCC 7
- Clang 4
- MSVC 14.12
- Xcode
- desc: "Pack expansions in `using`-declarations"
paper: P0195
support:
- GCC 7
- Clang 4
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_variadic_using
value: 201611L
- desc: "Matching of `template` template-arguments excludes compatible templates"
paper: P0522
support:
- GCC 7
- Clang 4
- MSVC 14.12
- Xcode
ftm:
- name: __cpp_template_template_args
value: 201611L
- desc: "Template argument deduction for class templates ([CTAD](https://en.cppreference.com/w/cpp/language/class_template_argument_deduction.html))"
paper: P0091
summary: "Deduce template arguments from constructor arguments."
content: ctad.md
support:
- GCC 7
- Clang 5
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_deduction_guides
value: 201703L
- desc: "`std::void_t`"
paper: N3911
lib: true
support:
- GCC 6
- Clang 3.6
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_void_t
value: 201411L
- desc: "`std::uncaught_exceptions()`"
paper: N4259
lib: true
support:
- GCC 6
- Clang 3.6
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_uncaught_exceptions
value: 201411L
- desc: "`std::size()`, `std::empty()` and `std::data()`"
paper: N4280
lib: true
support:
- GCC 6
- Clang 3.6
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_nonmember_container_access
value: 201411L
- desc: "Cleaning-up `noexcept` in the library"
paper: N4258
lib: true
support:
- GCC 6
- Clang 3.7
- MSVC 14.0
- Xcode 15
ftm:
- name: __cpp_lib_allocator_traits_is_always_equal
value: 201411L
- desc: "`std::invoke()`"
paper: N4169
lib: true
support:
- GCC 6
- Clang 3.7
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_invoke
value: 201411L
- desc: "`try_emplace()` and `insert_or_assign()` for `std::map` and `std::unordered_map`"
paper: N4279
lib: true
support:
- GCC 6
- Clang 3.7
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_map_try_emplace
value: 201411L
desc: "`std::map::try_emplace()` and `std::map::insert_or_assign()`"
- name: __cpp_lib_unordered_map_try_emplace
value: 201411L
desc: "`std::unordered_map::try_emplace()` and `std::unordered_map::insert_or_assign()`"
- desc: "Improving `std::pair` and `std::tuple`"
paper: N4387
lib: true
support:
- GCC 6
- Clang 4
- MSVC 14.0
- Xcode
- desc: "`std::bool_constant`"
paper: N4389
lib: true
support:
- GCC 6
- Clang 4
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_bool_constant
value: 201505L
- desc: "`std::shared_mutex`"
paper: N4508
lib: true
support:
- GCC 6
- Clang 3.7
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_shared_mutex
value: 201505L
- desc: "Minimal incomplete type support for `std::forward_list`, `std::list` and `std::vector`"
paper: N4510
lib: true
support:
- GCC 3
- Clang 3.6
- MSVC 12.0
- Xcode
ftm:
- name: __cpp_lib_incomplete_container_elements
value: 201505L
- desc: "Adopt type traits variable templates from library fundamentals TS for C++17"
paper: P0006
lib: true
support:
- GCC 7
- Clang 3.8
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_type_trait_variable_templates
value: 201510L
- desc: "Logical operator type traits"
paper: P0013
lib: true
support:
- GCC 6
- Clang 3.8
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_logical_traits
value: 201510L
- desc: "Constant View: A proposal for a `std::as_const()` helper function template"
paper: P0007
lib: true
support:
- GCC 7
- Clang 3.8
- MSVC 14.0
- Xcode
- desc: "Rounding functions for `chrono::duration` and `chrono::time_point`"
paper: P0092
lib: true
support:
- GCC 7
- Clang 3.8
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_chrono
value: 201510L
- desc: "Making `std::owner_less` more flexible (`std::owner_less<void>`)"
paper: P0074
lib: true
support:
- GCC 7
- Clang 3.8
- MSVC 14.0
- Xcode
ftm:
- name: __cpp_lib_transparent_operators
value: 201510L
- desc: "`std::not_fn`"
paper: [P0005, P0358]
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.12
- Xcode
ftm:
- name: __cpp_lib_not_fn
value: 201603L
- desc: "The parallelism TS should be standardized (parallel algorithms)"
paper: P0024
content: parallel-algorithms.md
lib: true
support:
- GCC 9
- Clang 17 (partial)
- MSVC 14.14
ftm:
- name: __cpp_lib_execution
value: 201603L
- name: __cpp_lib_parallel_algorithm
value: 201603L
- desc: "`std::clamp()`"
paper: P0025
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.0
- Xcode 10
ftm:
- name: __cpp_lib_clamp
value: 201603L
- desc: "(`nothrow`-)swappable traits"
paper: P0185
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.0
- Xcode 10
ftm:
- name: __cpp_lib_is_swappable
value: 201603L
- desc: "Polymorphic memory resources"
paper: P0220
lib: true
support:
- GCC 9
- Clang 16
- MSVC 14.13
- Xcode 15
ftm:
- name: __cpp_lib_memory_resource
value: 201603L
- desc: "[Searchers](https://en.cppreference.com/w/cpp/functional.html#Searchers), `std::apply()` and `std::sample()`"
paper: P0220
lib: true
support:
- GCC 7
- Clang 16
- MSVC 14.13
- Xcode
ftm:
- name: __cpp_lib_apply
value: 201603L
desc: "std::apply()"
- name: __cpp_lib_boyer_moore_searcher
value: 201603L
desc: "Searchers"
- name: __cpp_lib_sample
value: 201603L
desc: "std::sample()"
- desc: "[Mathematical special functions](https://en.cppreference.com/w/cpp/numeric/special_math.html)"
paper: P0226
lib: true
support: [GCC 7, MSVC 14.14]
ftm:
- name: __cpp_lib_math_special_functions
value: 201603L
- desc: "`constexpr` `std::addressof()`"
paper: LWG2296
lib: true
support:
- GCC 7
- Clang
- MSVC 14.0
- Xcode 15 (hint)
hints:
- target: Xcode 15
msg: "Supported, but the feature-testing macro (`__cpp_lib_addressof_constexpr`) is not set."
ftm:
- name: __cpp_lib_addressof_constexpr
value: 201603L
- desc: "`constexpr` for `std::reverse_iterator`, `std::move_iterator`, `std::array` and range access"
paper: P0031
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_lib_array_constexpr
value: 201603L
- desc: "`constexpr` `std::atomic::is_always_lock_free()`"
paper: P0152
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_lib_atomic_is_always_lock_free
value: 201603L
- desc: "`std::enable_shared_from_this::weak_from_this()`"
paper: P0033
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.12
- Xcode
ftm:
- name: __cpp_lib_enable_shared_from_this
value: 201603L
- desc: "3-argument overload of `std::hypot()`"
paper: P0030
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_lib_hypot
value: 201603L
- desc: "`std::byte`"
paper: P0298
summary: "A type for raw memory representation."
lib: true
support:
- GCC 7
- Clang 5
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_lib_byte
value: 201603L
- desc: "`std::string_view`"
paper: [N3921, P0220, P0254, P0403]
summary: "Non-owning reference to a character sequence."
content: string-view.md
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.11
- Xcode 10
ftm:
- name: __cpp_lib_string_view
value: 201606L
- desc: "`std::any`"
paper: [P0220, P0032]
content: any.md
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.10
- Xcode 10
ftm:
- name: __cpp_lib_any
value: 201606L
- desc: "`std::optional`"
paper: P0220
summary: "A wrapper that may or may not hold a value."
content: optional.md
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.10
- Xcode 10
ftm:
- name: __cpp_lib_optional
value: 201606L
- desc: "C++17 should refer to C11 instead of C99"
paper: P0063
lib: true
support:
- GCC 9
- Clang 7
- MSVC 14.0 (partial)
- MSVC 14.28
- Xcode 10
- desc: "Splicing maps and sets (`std::map::extract()`, `std::map::merge()` etc)"
paper: P0083
lib: true
support:
- GCC 7
- Clang 8
- MSVC 14.12
- Xcode 10
ftm:
- name: __cpp_lib_node_extract
value: 201606L
- desc: "`emplace()` return type in containers (instead of `void`)"
paper: P0084
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.11
- Xcode
- desc: "`std::variant`"
paper: P0088
summary: "Type-safe discriminated union."
content: variant.md
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.10
- Xcode 10
ftm:
- name: __cpp_lib_variant
value: 201606L
- desc: "`std::make_from_tuple()`"
paper: P0209
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.10
- Xcode
ftm:
- name: __cpp_lib_make_from_tuple
value: 201606L
- desc: "`std::has_unique_object_representations`"
paper: P0258
lib: true
support:
- GCC 7
- Clang 6
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_lib_has_unique_object_representations
value: 201606L
- desc: "`std::gcd()` and `std::lcm()`"
paper: P0295
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_lib_gcd_lcm
value: 201606L
- desc: "Replacement of class objects containing reference members (`std::launder()`)"
paper: P0137
lib: true
support:
- GCC 7
- Clang 6
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_lib_launder
value: 201606L
- desc: "[Extending memory management tools](https://en.cppreference.com/w/cpp/memory.html#Uninitialized_storage)"
paper: P0040
lib: true
support:
- GCC 7
- Clang 4 (partial)
- MSVC 14.11
- Xcode 15 (partial)
hints:
- target: Clang 4
msg: "The parallel versions (`std::execution::par`) are not implemented yet. ([Issue](https://github.com/llvm/llvm-project/issues/103640))"
- target: Xcode 15
msg: "The parallel versions (`std::execution::par`) are not implemented yet. ([Issue](https://github.com/llvm/llvm-project/issues/103640))"
ftm:
- name: __cpp_lib_raw_memory_algorithms
value: 201606L
- desc: "`std::shared_ptr::weak_type`"
paper: P0163
lib: true
support:
- GCC 7
- Clang 3.9
- MSVC 14.10
- Xcode
ftm:
- name: __cpp_lib_shared_ptr_weak_type
value: 201606L
- desc: "Elementary string conversions (`std::to_chars()` and `std::from_chars()`)"
paper: P0067
content: to-chars.md
lib: true
support: [GCC 8 (partial), GCC 11, Clang 7 (partial), Clang 14 (partial), Clang 20 (partial), MSVC 14.14 (partial), MSVC 14.15 (partial), MSVC 14.16 (partial), MSVC 14.24, Xcode 10 (partial), Xcode 14.3 (partial)]
hints:
- target: GCC 8
msg: "No support for floating-point types, only integer types."
- target: Clang 7
msg: "Adds `std::to_chars()` and `std::from_chars()` support for integer types."
- target: Clang 14
msg: "Adds only `std::to_chars()` support for `float` and `double`."
- target: Clang 20
msg: "Adds `std::from_chars()` support for `float` and `double`. Support is complete except for `long double`.\n\nIn total, the current status is:\n\n| Type | `to_chars` | `from_chars` |\n|------------------|------------|--------------|\n| integers | libc++ 7 | libc++ 7 |\n| `float`/`double` | libc++ 14 | libc++ 20 |\n| `long double` | - | - |\n\n---\n\n**Note**: Calling both functions with `long double` falls back to the `double` overload."
- target: MSVC 14.14
msg: "No support for floating-point types, only integer types."
- target: MSVC 14.15
msg: "Adds `std::from_chars()` support for `float` and `double`."
- target: MSVC 14.16
msg: "Adds shortest round-trip decimal overloads of floating-point `std::to_chars()`, e.g. `\"%.8e\"` and `\"%.16e\"`."
- target: Xcode 10
msg: "No support for floating-point types, only integer types."
- target: Xcode 14.3
msg: "Adds support for floating-point types."
ftm:
- name: __cpp_lib_to_chars
value: 201611L
- desc: "`std::shared_ptr` and `std::weak_ptr` with array support"
paper: P0414
lib: true
support:
- GCC 7
- Clang 11
- MSVC 14.12
- Xcode 12
- desc: "`constexpr` for all member functions of `chrono::duration` and `chrono::time_point`"
paper: P0505
lib: true
support:
- GCC 7
- Clang 4
- MSVC 14.11
- Xcode
ftm:
- name: __cpp_lib_chrono
value: 201611L
- desc: "`std::shared_ptr<T[]>`"
paper: P0497
lib: true
support:
- GCC 5
- Clang 11
- MSVC 14.12
- Xcode 15 (hint)
hints:
- target: Xcode 15
msg: "Supported, but the feature-testing macro (`__cpp_lib_shared_ptr_arrays`) is not set."
ftm:
- name: __cpp_lib_shared_ptr_arrays
value: 201611L
- desc: "`constexpr` `std::char_traits`"
paper: P0426
lib: true
support:
- GCC 8
- Clang 4
- MSVC 14.14
- Xcode
ftm:
- name: __cpp_lib_constexpr_string
value: 201611L
- desc: "File system library (`std::filesystem` and `<filesystem>`)"
paper: [P0218, P0219]
summary: "Standard library for file and directory operations."
content: filesystem.md
lib: true
support:
- GCC 8
- Clang 7
- MSVC 14.14
- Xcode 11
ftm:
- name: __cpp_lib_filesystem
value: 201703L