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MySQL select with CONCAT condition
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answered Apr 20 '11 at 18:02
mdmamdma
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Python nonlocal statement
What does the Python nonlocal statement do (in Python 3.0 and later)?
9 Answers
9
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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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looping through an NSMutableDictionary
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answered Oct 12 '10 at 11:58
Henrik P. HesselHenrik P. Hessel
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Regex for password must contain at least eight characters, at least one number and both lower and up
...?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$"
Minimum eight and maximum 10 characters, at least one uppercase letter, one lowercase letter, one number and one special character:
"^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,10}$"
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Copying text to the clipboard using Java
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edited Oct 30 '19 at 19:47
Denis Abakumov
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answered Jul 15 '11 at 21:23
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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...
How to copy yanked text to VI command prompt
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answered May 25 '09 at 12:28
Mykola GolubyevMykola Golubyev
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how to listen to N channels? (dynamic select statement)
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edited Feb 29 at 11:09
Zac
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answered Nov 15 '13 at 2:37
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