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How important is the order of columns in indexes?
...wn the number of results to deal with before the next step means better performance.
Since the index is also stored this way, there's no backtracking across the index to find the first column when you're querying on it.
In short: No, it's not for show, there are real performance benefits.
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Why is “except: pass” a bad programming practice?
...xception we were not prepared for. That way, we can still retain as much information about unexpected exceptions, which we then can use to extend our code to handle those explicitly (if we can recover from them) or—in case of a bug—to create test cases to make sure it won’t happen again. But o...
PHP Function Comments
...stion: I've seen that some PHP functions are commented at the top, using a format that is unknown to me:
4 Answers
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What is the difference between RDF and OWL? [closed]
...s of "Knows".
RDF Serialisations
RDF can be exported in a number of file formats. The most common is RDF+XML but this has some weaknesses.
N3 is a non-XML format which is easier to read, and there's some subsets (Turtle and N-Triples) which are stricter.
It's important to know that RDF is a way ...
How exactly does CMake work?
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As stated on its website:
Cmake is cross-platform, open-source build system for managing the build process of software using a compiler-independent method
In most cases it is used to generate project/make files - in your example it has produced Makefile which are used...
Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...2008 Hiroki Asakawa info@dokan-dev.net
*
* Delphi translation by Vincent Forman (vincent.forman@gmail.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without ...
Difference between DateTime and Time in Ruby
...038 we're basically screwed until we can all agree on a proper 64-bit time format. Jury is still out.
– tadman
May 10 '12 at 17:44
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What is Cache-Control: private?
... GMT
Because the browser knows the date the file was modified, it can perform a conditional request. It will ask the server for the file, but instruct the server to only send the file if it has been modified since 2012/10/16 3:13:38:
GET / HTTP/1.1
If-Modified-Since: Tue, 16 Oct 2012 03:13:38 GMT...
Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?
...d up the answer. In the future, you should consider what Klas suggests and format your response to increase the chances of upvotes. :)
– RekindledPhoenix
Jul 29 '13 at 18:07
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How to pull request a wiki page on GitHub?
...he quote). They're command-line Git commands, which should work on any platform with Git, including Windows, and including a UNIX or GNU/Linux OS with the Bash shell.
– Calrion
Jun 9 '16 at 23:24
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