大约有 40,000 项符合查询结果（耗时：0.0555秒） [XML]
Why does javascript map function return undefined?
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edited Dec 18 '13 at 8:01
answered Apr 16 '13 at 12:28
I...
how to listen to N channels? (dynamic select statement)
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edited Feb 29 at 11:09
Zac
31744 silver badges1313 bronze badges
answered Nov 15 '13 at 2:37
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Getting pids from ps -ef |grep keyword
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edited Nov 14 '11 at 10:59
answered Nov 14 '11 at 10:41
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What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
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answered Feb 11 '10 at 18:42
QuassnoiQuassnoi
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What are the “standard unambiguous date” formats for string-to-date conversion in R?
...n-'NA' element,
and give an error if neither works.
as.Date("01 Jan 2000") yields an error because the format isn't one of the two listed above. as.Date("01/01/2000") yields an incorrect answer because the date isn't in one of the two formats listed above.
I take "standard unambiguo...
Spring @PostConstruct vs. init-method attribute
...Construct, init-method are BeanPostProcessors.
@PostConstruct is a JSR-250 annotation while init-method is Spring's way of having an initializing method.
If you have a @PostConstruct method, this will be called first before the initializing methods are called.
If your bean implements InitializingB...
MySQL select with CONCAT condition
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answered Apr 20 '11 at 18:02
mdmamdma
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Copying text to the clipboard using Java
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edited Oct 30 '19 at 19:47
Denis Abakumov
8055 bronze badges
answered Jul 15 '11 at 21:23
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looping through an NSMutableDictionary
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answered Oct 12 '10 at 11:58
Henrik P. HesselHenrik P. Hessel
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How to use timeit module
...random
random.seed('slartibartfast')
s = [random.random() for i in range(1000)]
timsort = list.sort
'''
>>> print min(timeit.Timer('a=s[:]; timsort(a)', setup=setup).repeat(7, 1000))
0.334147930145
Note that the series of statements makes a fresh copy of the unsorted data on every pass....