大约有 3,200 项符合查询结果（耗时：0.0257秒） [XML]
Is if(items != null) superfluous before foreach(T item in items)?
...ome cases be slower and produce more memory pressure. This is a subtle but excellent point. Of course, the moral of the story is - as always - if you have a perf problem then profile it to find out what the real bottleneck is.
– Eric Lippert
Jun 23 '11 at 16:39...
Howto: Clean a mysql InnoDB storage engine?
...was getting an ERROR 2013 (HY000) when importing a 154g db. Thanks for the excellent answer!
– Josh Brown
Apr 26 '14 at 0:32
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How to drop column with constraint?
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Excellent answer but still missing approach when there are more than one constraint tied to a column. Some stored proc similar to @Digs ' post with loop included could be 5 stars answer
– YeinCM-Qva
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Good tutorials on XMPP? [closed]
...moffit's Professional XMPP Programming with JavaScript and jQuery book is excellent, better than the one mentioned above (O'Reilly). professionalxmpp.com
– user595349
Nov 22 '13 at 15:41
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LINQ to SQL Left Outer Join
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Excellent answer. Looking for more than 5 hours of google search. This is the only way resulting SQL will have left join in it.
– Faisal Mq
Jul 13 '13 at 22:01
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Get top 1 row of each group
... phone number (where each could have several numbers). This is where Apply excels. Less reads = less disk access = better performance. Given my experience is with poorly designed non-normalized databases.
– TamusJRoyce
Jun 5 '16 at 17:36
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How to read from a file or STDIN in Bash?
...ant to handle multiple arguments, you'll end up writing Jonathan Leffler's excellent answer—in fact yours would be better since you'd use IFS= with read and printf instead of echo. :).
– gniourf_gniourf
Mar 1 '15 at 0:17
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How can I search Git branches for a file or directory?
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Note that gitk supports the globbing as well. That is an excellent answer @webmat! If you want to see where it's been deleted / created /etc, you can use git log --all --stat -- **/my_file.png, that way you won't have to guess if you're checking it out from a commit that deleted it...
How do I use Maven through a proxy?
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Excellent, thanks. If you want to use those options just once for one single command, you can type : MAVEN_OPTS="-DsocksProxyHost=127.0.0.1 -DsocksProxyPort=1080" mvn clean install The next mvn commands in the same session wi...
Distinct() with lambda?
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Excellent! This is really easy to encapsulate in an extension method too, like DistinctBy (or even Distinct, since the signature will be unique).
– Tomas Aschan
Jul 27 '11 at 11:33
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