大约有 45,000 项符合查询结果（耗时：0.0425秒） [XML]
Check if a row exists, otherwise insert
...PK is a bigint, as the internal hashing on SQL Server is degenerate for 64-bit values (different key values may hash to the same lock id).
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follo...
Embed git commit hash in a .Net dll
... in an SCM before.
– John Jesus
Apr 10 '14 at 23:15
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I use git describe --dirty, which adds a fl...
C++, variable declaration in 'if' expression
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@Neutrino At first sight you idea sounds a bit like the SAT-problem, which is not that easy to solve, at least in the general case.
– Christian Rau
Oct 20 '11 at 14:37
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What does -XX:MaxPermSize do?
...nly used to print a warning message like this one:
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option
MaxPermSize=512m; support was removed in 8.0
The reason why you get this message in Java 8 is because Permgen has been replaced by Metaspace to address some of PermGen's drawbacks (a...
How does OpenID authentication work?
...oo low-level.
http://wiki.openid.net/w/page/12995171/Introduction
It's a bit verbose, and more or less written as prose, but it's a fun read and very informative about what happens behind the scenes.
(Answer pasted from my answer at OpenID login workflow?.)
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What is a “Bitmap heap scan” in a query plan?
I want to know the principle of "Bitmap heap scan", I know this often happens
when I execute a query with OR in the condition.
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How to use a decimal range() step value?
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I would extend it a bit for the other direction with a (while r > stop) and a corresponding r -= step for giving the opposite direction.
– user318904
Nov 8 '10 at 3:59
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How to debug a bash script? [closed]
... Just discovered ddd thanks to your answer. In Ubuntu 12.04.3 (64bit), the apt-sources version doesn't work. I had to compile & install from source to start debugging my bash script. The instructions here - askubuntu.com/questions/156906/… helped.
– chronodekar
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Is there still any reason to learn AWK?
...e.in
This prints the third whitespace-delimited field in file.in. It's a bit easier than:
tr -s ' ' < file.in | cut -d' ' -f3
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Should I use encodeURI or encodeURIComponent for encoding URLs?
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Well. I might have spoken a bit hastily when I said the webserver would do it, but whatever library you use to read your form data will take care of it for you.
– Quentin
Dec 27 '10 at 18:29
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