大约有 30,000 项符合查询结果(耗时:0.0677秒) [XML]
How to speed up insertion perfor<em>mem>ance in PostgreSQL
I a<em>mem> testing Postgres insertion perfor<em>mem>ance. I have a table with one colu<em>mem>n with nu<em>mem>ber as its data type. There is an index on it as well. I filled the database up using this query:
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When to use single quotes, double quotes, and backticks in <em>Mem>ySQL
I a<em>mem> trying to learn the best way to write queries. I also understand the i<em>mem>portance of being consistent. Until now, I have rando<em>mem>ly used single quotes, double quotes, and backticks without any real thought.
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How line ending conversions work with git core.autocrlf between different operating syste<em>mem>s
I've read a lot of different questions and answers on Stack Overflow as well as git docu<em>mem>entation on how the core.autocrlf setting works.
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jQuery deferreds and pro<em>mem>ises - .then() vs .done()
I've been reading about jQuery deferreds and pro<em>mem>ises and I can't see the difference between using .then() &a<em>mem>p; .done() for successful callbacks. I know Eric Hynds <em>mem>entions that .done() and .success() <em>mem>ap to the sa<em>mem>e functionality but I'<em>mem> guessing so does .then() as all the callbacks are al...
error: Unable to find vcvarsall.bat
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Update: Co<em>mem><em>mem>ents point out that the instructions here <em>mem>ay be dangerous. Consider using the Visual C++ 2008 Express edition or the purpose-built <em>Mem>icrosoft Visual C++ Co<em>mem>piler for Python (details) and NOT using the original answer below....
Python <em>mem>ultiprocessing PicklingError: Can't pickle
I a<em>mem> sorry that I can't reproduce the error with a si<em>mem>pler exa<em>mem>ple, and <em>mem>y code is too co<em>mem>plicated to post. If I run the progra<em>mem> in IPython shell instead of the regular Python, things work out well.
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ASP.NET_SessionId + OWIN Cookies do not send to browser
I have a strange proble<em>mem> with using Owin cookie authentication.
9 Answers
9
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Are Javascript arrays sparse?
That is, if I use the current ti<em>mem>e as an index into the array:
7 Answers
7
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How to avoid isset() and e<em>mem>pty()
I have several older applications that throw a lot of "xyz is undefined" and "undefined offset" <em>mem>essages when running on the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts.
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What's the difference between unit, functional, acceptance, and integration tests? [closed]
What is the difference between unit, functional, acceptance, and integration testing (and any other types of tests that I failed to <em>mem>ention)?
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