大约有 29,500 项符合查询结果（耗时：0.0391秒） [XML]
CSS Selector that applies to elements with two classes
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27
@Imray: Yes, the space represents a descendant selector, which would make each class selector represent a different element. But we're talk...
Media Queries - In between two widths
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274
You need to switch your values:
/* No greater than 900px, no less than 400px */
@media (max-w...
What is the meaning of CTOR?
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H.B.
133k2525 gold badges274274 silver badges350350 bronze badges
answered Jan 6 '11 at 10:50
Jon SkeetJon Skeet
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Create list of single item repeated N times
...it('itertools.repeat(0, 10)', 'import itertools', number = 1000000)
0.37095273281943264
>>> timeit.timeit('[0] * 10', 'import itertools', number = 1000000)
0.5577236771712819
But wait - it's not a fair test...
>>> itertools.repeat(0, 10)
repeat(0, 10) # Not a list!!!
The func...
SQLite select where empty?
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27
It looks like you can simply do:
SELECT * FROM your_table WHERE some_column IS NULL OR some_co...
How can you hide database output in Rails console?
...s logger.
– eremzeit
Sep 5 '13 at 4:27
1
To the previous commenters: this answers the question, a...
Where to define custom error types in Ruby and/or Rails?
... other applications.
– wuliwong
Jun 27 '17 at 21:08
1
Ruby on Rails instructions did not work for...
Convert data.frame column format from character to factor
...anted to change many but not all. E.g., col_nums <- c(1, 6, 7:9, 21:23, 27:28, 30:31, 39, 49:55, 57) then df[,col_nums] <- lapply(df[,col_nums] , factor).
– WGray
Aug 8 '14 at 17:17
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What is the status of JSR 305?
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answered Feb 18 '10 at 15:27
KevinKevin
28.8k99 gold badges7171 silver badges7878 bronze badges
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“used as value” in function call
... Flimzy
55.3k1313 gold badges8585 silver badges127127 bronze badges
answered Sep 24 '12 at 8:24
MaciejMaciej
3,11711 gold badg...