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Java synchronized static methods: lock on object or class
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Please answer Elaborate so that everyone can understand.
– Madhu
Sep 2 '09 at 4:49
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Regex empty string or email
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This regex pattern will match an empty string:
^$
And this will match (crudely) an email or an empty string:
(^$|^.*@.*\..*$)
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What is the difference between native code, machine code and assembly code?
I'm confused about machine code and native code in the context of .NET languages.
4 Answers
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Daylight saving time and time zone best practices [closed]
I am hoping to make this question and the answers to it the definitive guide to dealing with daylight saving time, in particular for dealing with the actual change overs.
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RESTful Login Failure: Return 401 or Custom Response
...to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided. The response must include a WWW-Authenticate header field containing a challenge applicable to the requested resource.
Your confusion about, myservice.com/are/these/credentials/v...
What is the difference between syntax and semantics in programming languages?
What is the difference between syntax and semantics in programming languages (like C, C++)?
10 Answers
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Difference between == and ===
In swift there seem to be two equality operators: the double equals ( == ) and the triple equals ( === ), what is the difference between the two?
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Tuples( or arrays ) as Dictionary keys in C#
...alues to one string. I tried using arrays as keys, but that did not work, and I don't know what else to do. At this point I am considering making a Dictionary of Dictionaries of Dictionaries, but that would probably not be very pretty to look at, though it is how I would do it in javascript.
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How to add a changed file to an older (not last) commit in Git
I have changed several things over the last hour and committed them step by step, but I just realized I've forgot to add a changed file some commits ago.
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How to duplicate a whole line in Vim?
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and 2yy can be used to copy 2 lines (and for any other n)
– Amir Ali Akbari
Oct 9 '12 at 10:33
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