大约有 47,000 项符合查询结果(耗时:0.0541秒) [XML]

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Is std::unique_ptr required to know the full definition of T?

...s. However shared_ptr and unique_ptr are partial exceptions. Some, but not all of their members can be instantiated with incomplete types. The motivation for this is to support idioms such as pimpl using smart pointers, and without risking undefined behavior. Undefined behavior can occur when you h...
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What is the argument for printf that formats a long?

... Actually, you should change it to be %ld, to be more harmonic with OP question. – DrBeco Jun 21 '15 at 5:28 ...
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AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?

...nal web application at work. In IE10 the requests work fine, but in Chrome all the AJAX requests (which there are many) are sent using OPTIONS instead of whatever defined method I give it. Technically my requests are "cross domain." The site is served on localhost:6120 and the service I'm making AJA...
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What should be in my .gitignore for an Android Studio project?

...kbox and mark the "use default gradle wrapper (recommended)" radio button. All paths are now relative as @George suggested. Updated answer according to @128KB attached source and @Skela suggestions share | ...
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How to set default value for form field in Symfony2?

..., it will also always force the value under any context. Not what I would call a "default value"... – Hubert Perron Apr 3 '13 at 18:25 4 ...
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Determine if Android app is being used for the first time

... Beware for Android 6.0 (API 23 - Marshmallow) or above auto backup (developer.android.com/guide/topics/data/autobackup.html)is enabled by default. If the users uninstalls and then reinstalls the app the shared preferences will be recovered. So on reinstalls you ca...
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How do you use variables in a simple PostgreSQL script?

... This doesn't answer the question at all. In MS SQL you can define a var in a query and use it right there, in the same tool. I don't get why people keep proposing this as an answer, in every version of this question. – stone ...
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Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

I have installed MySQL server and trying to connect to it, but getting the error: 18 Answers ...
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Postgresql GROUP_CONCAT equivalent?

...dited Sep 14 '17 at 20:37 Ariel Allon 71211 gold badge99 silver badges1515 bronze badges answered Apr 1 '10 at 14:55 ...
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How to add new column to MYSQL table?

... Thanks, It worked with - mysql_query("ALTER TABLE assessment ADD q6 INT(1) NOT NULL AFTER q5"); – Steven Trainor Apr 19 '13 at 21:33 ...