Tag:
Branch:
Tree:
1821598fbb
0.35.1
0.41
0.42
0.42-msi
0.44
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
0.56
0.57
0.58
0.59
0.60
0.61
0.62
0.63
0.64
0.tryme
1.0
1.1
1.2
1.3
1.4
1.5
1.tryme
biggen
builddirupgrade
corporations
crossenvvar
darwin_arch
deprecationdeadline
dirc2
docbuild
dolphin
dotinclude
es/0.61-plus-cython
fedora
gentarget
gh-pages
killpy3
lang-enum
master
mingwdisable
ninjalink
opthelper
optionlookup
optionrefactor
optionrefactor2
optiontree
overrides
pr8895-old
remove-parse_cmd_line_options
revert-10757-llvm-config
rustcmix
tingping/test-gir-program
tingping/test-profile
tingping/xdg-module
trigger-ciimage-builder
uniquefilenames
useargsintests
versionfile
vsmodtest
wip/default-directories
wip/ignatenko/gtester
wip/tingping/xdg-auto-post-install
wip/xclaesse/pr-10714
wip/xclaesse/pr-12097
xclaesse/pr11561-orig
0.1.0
0.10.0
0.11.0
0.12.0
0.13.0
0.14.0
0.15.0
0.16.0
0.17.0
0.18.0
0.19.0
0.2.0
0.20.0
0.21.0
0.22.0
0.23.0
0.24.0
0.25.0
0.26.0
0.27.0
0.28.0
0.29.0
0.30.0
0.31.0
0.32.0
0.33.0
0.34.0
0.35.0
0.35.1
0.36.0
0.37.0
0.37.1
0.38.0
0.38.1
0.39.0
0.39.1
0.4.0
0.4.1
0.40.0
0.40.1
0.41.0
0.41.1
0.41.2
0.42.0
0.42.1
0.43.0
0.44.0
0.44.1
0.45.0
0.45.1
0.46.0
0.46.1
0.47.0
0.47.1
0.47.2
0.48.0
0.48.1
0.48.2
0.49.0
0.49.1
0.49.2
0.5.0
0.50.0
0.50.1
0.51.0
0.51.1
0.51.2
0.52.0
0.52.1
0.53.0
0.53.1
0.53.2
0.54.0
0.54.0.rc1
0.54.1
0.54.2
0.54.3
0.55.0
0.55.0.rc1
0.55.0.rc2
0.55.1
0.55.2
0.55.3
0.56.0
0.56.0.rc1
0.56.0.rc2
0.56.1
0.56.2
0.57.0
0.57.0.rc1
0.57.1
0.57.2
0.58.0
0.58.0.rc1
0.58.1
0.58.2
0.59.0
0.59.0.rc1
0.59.0.rc2
0.59.1
0.59.2
0.59.3
0.59.4
0.6.0
0.60.0
0.60.0.rc1
0.60.0rc2
0.60.1
0.60.2
0.60.3
0.61.0
0.61.0rc1
0.61.1
0.61.2
0.61.3
0.61.4
0.61.5
0.62.0
0.62.0rc1
0.62.0rc2
0.62.1
0.62.2
0.63.0
0.63.0.rc2
0.63.0rc1
0.63.1
0.63.2
0.63.3
0.64.0
0.64.0rc1
0.64.0rc2
0.64.1
0.7.0
0.8.0
0.9.0
1.0.0
1.0.0rc1
1.0.0rc2
1.0.1
1.0.2
1.1.0
1.1.0rc1
1.1.0rc2
1.1.1
1.2.0
1.2.0rc1
1.2.0rc2
1.2.0rc3
1.2.1
1.2.2
1.2.3
1.3.0
1.3.0rc1
1.3.0rc2
1.3.0rc3
1.3.1
1.3.2
1.4.0
1.4.0rc1
1.4.0rc2
1.4.1
1.4.2
1.5.0
1.5.0rc1
1.5.0rc2
1.5.0rc3
1.5.1
1.5.2
1.6.0
1.6.0rc1
1.6.0rc2
${ noResults }
3 Commits (1821598fbb856edc3cf87470171e85e8910a6f99)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Dylan Baker
|
a8173630ea |
Don't use len() to test emptiness vs not emptiness
Meson has a common pattern of using 'if len(foo) == 0:' or
'if len(foo) != 0:', however, this is a common anti-pattern in python.
Instead tests for emptiness/non-emptiness should be done with a simple
'if foo:' or 'if not foo:'
Consider the following:
>>> import timeit
>>> timeit.timeit('if len([]) == 0: pass')
0.10730923599840025
>>> timeit.timeit('if not []: pass')
0.030033907998586074
>>> timeit.timeit('if len(['a', 'b', 'c', 'd']) == 0: pass')
0.1154778649979562
>>> timeit.timeit("if not ['a', 'b', 'c', 'd']: pass")
0.08259823200205574
>>> timeit.timeit('if len("") == 0: pass')
0.089759664999292
>>> timeit.timeit('if not "": pass')
0.02340641999762738
>>> timeit.timeit('if len("foo") == 0: pass')
0.08848102600313723
>>> timeit.timeit('if not "foo": pass')
0.04032287199879647
And for the one additional case of 'if len(foo.strip()) == 0', which can
be replaced with 'if not foo.isspace()'
>>> timeit.timeit('if len(" ".strip()) == 0: pass')
0.15294511600222904
>>> timeit.timeit('if " ".isspace(): pass')
0.09413968399894657
>>> timeit.timeit('if len(" abc".strip()) == 0: pass')
0.2023209120015963
>>> timeit.timeit('if " abc".isspace(): pass')
0.09571301700270851
In other words, it's always a win to not use len(), when you don't
actually want to check the length.
|
8 years ago |
Elliott Sales de Andrade
|
859c5e28df |
Use context manager in scripts.
|
8 years ago |
Jussi Pakkanen
|
eb6548a816 |
Created an emergency wraptool that downloads directly from Github.
|
9 years ago |