dart-lang / co19
File Age

File age measurements show the distribution of file ages (days since the first commit) and the recency of file updates (days since the latest commit).

Summary
  • Number of files: 17159
  • Daily file updates (only one update per file and date counted): 55678
  • First update: 2011-10-14
  • Latest update: 2022-02-02
  • Days between first and latest update: 3765 (537 weeks, estimated 2685 working days)
  • Active days (at least one file change): 1312
  • Data:
File Change History Overall
File Age Distribution Overall
Days since first update
  • There are 17,158 files with 269,444 lines of code in files.
    • 16,004 files that are 366+ days old (249,753 lines of code)
    • 733 files that are 181-365 days old (12,228 lines of code)
    • 244 files that are 91-180 days old (3,725 lines of code)
    • 123 files that are 31-90 days old (2,606 lines of code)
    • 54 files that are 1-30 days old (1,132 lines of code)
92% | 4% | 1% | <1% | <1%
Legend:
366+
181-365
91-180
31-90
1-30
Latest Change Distribution Overall
Days since last update
  • There are 17,158 files with 269,444 lines of code in files.
    • 52 files have been last changed 366+ days ago (319 lines of code)
    • 14,904 files have been last changed 181-365 days ago (227,363 lines of code)
    • 1,027 files have been last changed 91-180 days ago (14,866 lines of code)
    • 1,052 files have been last changed 31-90 days ago (24,085 lines of code)
    • 123 files have been last changed 1-30 days ago (2,811 lines of code)
<1% | 84% | 5% | 8% | 1%
Legend:
366+
181-365
91-180
31-90
1-30
File Change History per File Extension
dart, txt, md, html, yaml, json, py
File Age Distribution per Extension
Days since first update
366+
181-365
91-180
31-90
1-30
dart92% | 4% | 1% | <1% | <1%
html100% | 0% | 0% | 0% | 0%
yaml0% | 50% | 0% | 0% | 50%
py0% | 0% | 0% | 0% | 0%
Latest Change Distribution per Extension
Days since last update
366+
181-365
91-180
31-90
1-30
dart<1% | 84% | 5% | 8% | 1%
html100% | 0% | 0% | 0% | 0%
yaml0% | 50% | 0% | 0% | 50%
py0% | 0% | 0% | 0% | 0%
File Change History per Logical Decomposition
primary
primary (file age distribution)
Days since first update
366+
181-365
91-180
31-90
1-30
LibTest/io99% | 0% | 0% | <1% | 0%
LibTest/typed_data100% | 0% | 0% | 0% | 0%
LanguageFeatures/nnbd94% | 4% | <1% | 0% | 0%
Language/Expressions98% | <1% | <1% | 0% | 0%
LibTest/core99% | <1% | 0% | 0% | 0%
LibTest/collection100% | 0% | 0% | 0% | 0%
LibTest/html99% | 0% | 0% | <1% | 0%
Language/Statements100% | 0% | 0% | 0% | 0%
Language/Classes100% | 0% | 0% | 0% | 0%
LibTest/async100% | 0% | 0% | 0% | 0%
Language/Types92% | <1% | 0% | 7% | 0%
LibTest/isolate98% | <1% | <1% | 0% | 0%
LanguageFeatures/Instantiate-to-bound100% | 0% | 0% | 0% | 0%
LanguageFeatures/Extension-methods100% | 0% | 0% | 0% | 0%
LibTest/math100% | 0% | 0% | 0% | 0%
LibTest/convert100% | 0% | 0% | 0% | 0%
LanguageFeatures/Spread-collections100% | 0% | 0% | 0% | 0%
LanguageFeatures/Super-mixins100% | 0% | 0% | 0% | 0%
Language/Reference100% | 0% | 0% | 0% | 0%
Language/Libraries_and_Scripts97% | 2% | 0% | 0% | 0%
Language/Generics99% | <1% | <1% | 0% | 0%
LanguageFeatures/Control-flow-collections100% | 0% | 0% | 0% | 0%
LanguageFeatures/Simple-bounds100% | 0% | 0% | 0% | 0%
Language/Mixins99% | <1% | 0% | 0% | 0%
Language/Functions100% | 0% | 0% | 0% | 0%
LanguageFeatures/Set-literals100% | 0% | 0% | 0% | 0%
LanguageFeatures/Constant-update-2018100% | 0% | 0% | 0% | 0%
LanguageFeatures/int-to-double100% | 0% | 0% | 0% | 0%
Language/Variables97% | <1% | 1% | 0% | 0%
Language/Overview100% | 0% | 0% | 0% | 0%
LanguageFeatures/Abstract-external-fields100% | 0% | 0% | 0% | 0%
Language/Interfaces100% | 0% | 0% | 0% | 0%
LibTest/mirrors90% | 0% | 9% | 0% | 0%
Utils72% | 27% | 0% | 0% | 0%
LanguageFeatures/Subtyping100% | 0% | 0% | 0% | 0%
Language/Metadata80% | 19% | 0% | 0% | 0%
Language/Enums100% | 0% | 0% | 0% | 0%
LanguageFeatures/Super-bounded-types100% | 0% | 0% | 0% | 0%
LanguageFeatures/Triple-Shift100% | 0% | 0% | 0% | 0%
LanguageFeatures/regression58% | 2% | 38% | 0% | 0%
Language/Errors_and_Warnings100% | 0% | 0% | 0% | 0%
LibTest/ffi1% | 96% | 0% | 2% | 0%
LanguageFeatures/Constructor-tear-offs0% | 72% | 27% | 0% | 0%
LanguageFeatures/Generic-functions-as-type-args0% | 100% | 0% | 0% | 0%
LanguageFeatures/Enhanced-Enum0% | 0% | 52% | 0% | 47%
LanguageFeatures/Super-parameters0% | 0% | 15% | 83% | <1%
LanguageFeatures/Named-arguments-anywhere0% | 0% | 100% | 0% | 0%
LanguageFeatures/FinalizationRegistry0% | 0% | 0% | 0% | 100%
ROOT0% | 0% | 0% | 0% | 0%
primary (latest change distribution)
Days since last update
366+
181-365
91-180
31-90
1-30
Language/Libraries_and_Scripts11% | 80% | <1% | 7% | 0%
LibTest/html<1% | 97% | 0% | 2% | 0%
Language/Expressions<1% | 88% | 5% | 5% | 0%
LibTest/io0% | 90% | 1% | 8% | <1%
LibTest/typed_data0% | 88% | 3% | 7% | 0%
LanguageFeatures/nnbd0% | 93% | 1% | 4% | <1%
LibTest/core0% | 94% | <1% | 4% | 0%
LibTest/collection0% | 97% | <1% | 1% | 0%
Language/Statements0% | 94% | 5% | <1% | <1%
Language/Classes0% | 94% | 3% | 2% | 0%
LibTest/isolate0% | 96% | 1% | 2% | 0%
LibTest/async0% | 85% | 2% | 12% | 0%
LibTest/ffi0% | 95% | <1% | 3% | 0%
LibTest/math0% | 97% | 0% | 2% | 0%
LanguageFeatures/Extension-methods0% | 95% | 4% | 0% | 0%
LibTest/convert0% | 100% | 0% | 0% | 0%
LanguageFeatures/Super-mixins0% | 98% | 1% | 0% | 0%
LanguageFeatures/Spread-collections0% | 81% | 0% | 13% | 5%
Language/Reference0% | 95% | 3% | <1% | 0%
LanguageFeatures/Simple-bounds0% | 100% | 0% | 0% | 0%
LanguageFeatures/Instantiate-to-bound0% | 38% | 61% | 0% | 0%
Language/Generics0% | 76% | <1% | 21% | 1%
Language/Types0% | 24% | <1% | 74% | 0%
Language/Mixins0% | 98% | 0% | 1% | 0%
Language/Functions0% | 87% | 9% | 2% | 0%
LanguageFeatures/Constant-update-20180% | 98% | 0% | 1% | 0%
LanguageFeatures/int-to-double0% | 100% | 0% | 0% | 0%
Language/Overview0% | 97% | 0% | 2% | 0%
LanguageFeatures/Abstract-external-fields0% | 100% | 0% | 0% | 0%
LanguageFeatures/Control-flow-collections0% | 32% | 0% | 67% | 0%
Language/Interfaces0% | 100% | 0% | 0% | 0%
Language/Variables0% | 86% | 13% | 0% | 0%
LanguageFeatures/Set-literals0% | 39% | 1% | 57% | 1%
LibTest/mirrors0% | 90% | 9% | 0% | 0%
LanguageFeatures/Subtyping0% | 100% | 0% | 0% | 0%
Language/Metadata0% | 72% | 27% | 0% | 0%
Language/Enums0% | 92% | 0% | 7% | 0%
LanguageFeatures/Super-bounded-types0% | 100% | 0% | 0% | 0%
Utils0% | 27% | 0% | 72% | 0%
LanguageFeatures/regression0% | 57% | 42% | 0% | 0%
Language/Errors_and_Warnings0% | 100% | 0% | 0% | 0%
LanguageFeatures/Generic-functions-as-type-args0% | 1% | 46% | 52% | 0%
LanguageFeatures/Constructor-tear-offs0% | 0% | 81% | 16% | 2%
LanguageFeatures/Enhanced-Enum0% | 0% | 26% | 0% | 73%
LanguageFeatures/Named-arguments-anywhere0% | 0% | 71% | 28% | 0%
LanguageFeatures/Triple-Shift0% | 0% | 100% | 0% | 0%
LanguageFeatures/Super-parameters0% | 0% | 0% | 67% | 32%
LanguageFeatures/FinalizationRegistry0% | 0% | 0% | 0% | 100%
ROOT0% | 0% | 0% | 0% | 0%
Oldest Files (Top 20)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
hasMatch_A01_t02.dart
in LibTest/core/RegExp
 287 1 269 2445 6
expect_common.dart
in Utils
 249 20 42 2445 17
pow_A01_t01.dart
in LibTest/math
 203 - 269 2445 7
atan2_A01_t01.dart
in LibTest/math
 203 - 269 2445 7
allListTests.lib.dart
in LibTest/core/List
 181 1 269 2445 6
allTests.lib.dart
in LibTest/core/Iterable
 175 - 269 2445 7
IterableMixin_class_A01_t02.dart
in LibTest/collection/IterableMixin
 158 4 269 2445 7
async_utils.dart
in Utils
 155 14 50 2445 17
atan_A01_t01.dart
in LibTest/math
 138 - 269 2445 9
tan_A01_t01.dart
in LibTest/math
 138 - 269 2445 9
cos_A01_t01.dart
in LibTest/math
 138 - 269 2445 9
sin_A01_t01.dart
in LibTest/math
 138 - 269 2445 8
asin_A01_t01.dart
in LibTest/math
 138 - 269 2445 9
acos_A01_t01.dart
in LibTest/math
 138 - 269 2445 9
exp_A01_t01.dart
in LibTest/math
 138 - 269 2445 7
log_A01_t01.dart
in LibTest/math
 138 - 269 2445 8
sqrt_A01_t01.dart
in LibTest/math
 138 - 269 2445 7
parse_A03_t01.dart
in LibTest/core/DateTime
 82 - 269 2445 7
IsolateStream.dart
in LibTest/isolate/ReceivePort
 70 3 270 2445 6
firstMatch_Atom_A03_t01.dart
in LibTest/core/RegExp/Pattern_semantics
 69 2 269 2445 6
Files Not Recently Changed (Top 20)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
iframe.html
in LibTest/html/IFrameElement
 9 - 2445 2445 1
part_11.dart
in Language/Libraries_and_Scripts/Parts
 1 - 2348 2356 2
library_name_t02_libC.dart
in Language/Libraries_and_Scripts/Imports
 1 - 2348 2356 2
library_name_t02_libB.dart
in Language/Libraries_and_Scripts/Imports
 1 - 2348 2356 2
part_9_lib.dart
in Language/Libraries_and_Scripts/Parts
 2 - 2348 2356 2
library1.dart
in Language/Libraries_and_Scripts/URIs
 2 - 2348 2356 2
part.dart
in Language/Libraries_and_Scripts/URIs
 2 - 2348 2356 2
namespace_changes_t27_lib1.dart
in Language/Libraries_and_Scripts/Imports
 2 - 2348 2356 2
namespace_changes_t27_lib2.dart
in Language/Libraries_and_Scripts/Imports
 2 - 2348 2356 2
namespace_changes_p2_lib.dart
in Language/Libraries_and_Scripts/Imports
 2 - 2348 2356 2
syntax_t36_lib.dart
in Language/Libraries_and_Scripts/Imports
 2 - 2348 2356 2
String_Interpolation_lib.dart
in Language/Expressions/Strings/String_Interpolation
 2 - 2348 2363 3
reexport__itself_t02_lib.dart
in Language/Libraries_and_Scripts/Exports
 3 - 2348 2356 2
reexport_lib_p2.dart
in Language/Libraries_and_Scripts/Exports
 3 - 2348 2356 2
library2.dart
in Language/Libraries_and_Scripts/Scripts
 3 - 2348 2356 2
library1.dart
in Language/Libraries_and_Scripts/Scripts
 3 - 2348 2356 2
library_name_t02_libA.dart
in Language/Libraries_and_Scripts/Imports
 3 - 2348 2356 2
same_name_t11_p1_lib.dart
in Language/Libraries_and_Scripts/Imports
 3 - 2348 2356 2
namespace_changes_lib_reexport2.dart
in Language/Libraries_and_Scripts/Imports
 3 - 2348 2356 2
same_name_t20_p1_lib.dart
in Language/Libraries_and_Scripts/Imports
 3 - 2348 2356 2
Most Recently Created Files (Top 20)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
testcfg.py
in root
 107 14
gc_utils_lib.dart
in LanguageFeatures/FinalizationRegistry
 21 1 2 2 1
expando_key_t05.dart
in LanguageFeatures/FinalizationRegistry
 31 - 3 3 1
expando_key_t04.dart
in LanguageFeatures/FinalizationRegistry
 29 - 3 3 1
expando_key_t02.dart
in LanguageFeatures/FinalizationRegistry
 27 - 3 3 1
expando_key_t03.dart
in LanguageFeatures/FinalizationRegistry
 23 - 3 3 1
expando_key_t01.dart
in LanguageFeatures/FinalizationRegistry
 12 - 3 3 1
expando_key_t06.dart
in LanguageFeatures/FinalizationRegistry
 8 - 3 3 1
pubspec.yaml
in LanguageFeatures/FinalizationRegistry
 7 - 3 3 1
semantics_A10_t05.dart
in LanguageFeatures/Enhanced-Enum
 45 - 4 4 1
semantics_A10_t03.dart
in LanguageFeatures/Enhanced-Enum
 23 1 4 4 1
semantics_A10_t04.dart
in LanguageFeatures/Enhanced-Enum
 21 - 4 4 1
semantics_A10_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 1 4 4 1
semantics_A15_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 - 4 4 1
semantics_A10_t02.dart
in LanguageFeatures/Enhanced-Enum
 19 1 4 4 1
semantics_A11_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 - 4 4 1
semantics_A13_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 - 4 4 1
semantics_A11_t02.dart
in LanguageFeatures/Enhanced-Enum
 18 - 4 4 1
semantics_A11_t03.dart
in LanguageFeatures/Enhanced-Enum
 18 - 4 4 1
semantics_A14_t01.dart
in LanguageFeatures/Enhanced-Enum
 16 - 4 4 1
Most Recently Changed Files (Top 20)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes
testcfg.py
in root
 107 14
gc_utils_lib.dart
in LanguageFeatures/FinalizationRegistry
 21 1 2 2 1
expando_key_t05.dart
in LanguageFeatures/FinalizationRegistry
 31 - 3 3 1
expando_key_t04.dart
in LanguageFeatures/FinalizationRegistry
 29 - 3 3 1
expando_key_t02.dart
in LanguageFeatures/FinalizationRegistry
 27 - 3 3 1
expando_key_t03.dart
in LanguageFeatures/FinalizationRegistry
 23 - 3 3 1
expando_key_t01.dart
in LanguageFeatures/FinalizationRegistry
 12 - 3 3 1
expando_key_t06.dart
in LanguageFeatures/FinalizationRegistry
 8 - 3 3 1
pubspec.yaml
in LanguageFeatures/FinalizationRegistry
 7 - 3 3 1
semantics_A10_t05.dart
in LanguageFeatures/Enhanced-Enum
 45 - 4 4 1
semantics_A03_t02.dart
in LanguageFeatures/Enhanced-Enum
 25 - 4 23 4
semantics_A10_t03.dart
in LanguageFeatures/Enhanced-Enum
 23 1 4 4 1
grammar_A09_t04.dart
in LanguageFeatures/Enhanced-Enum
 23 - 4 108 4
semantics_A10_t04.dart
in LanguageFeatures/Enhanced-Enum
 21 - 4 4 1
semantics_A10_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 1 4 4 1
semantics_A15_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 - 4 4 1
semantics_A10_t02.dart
in LanguageFeatures/Enhanced-Enum
 19 1 4 4 1
semantics_A11_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 - 4 4 1
semantics_A13_t01.dart
in LanguageFeatures/Enhanced-Enum
 19 - 4 4 1
semantics_A11_t02.dart
in LanguageFeatures/Enhanced-Enum
 18 - 4 4 1