大约有 10,000 项符合查询结果(耗时:0.0309秒) [XML]

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How do I get the object if it exists, or None if it does not exist?

... Using first() is only a good idea if you don't care when there are multiples. Otherwise, this solution is superior, because it will still throw an Exception if you unexpectedly find multiple objects, which is normally what you would want to happen in th...
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Can't connect to local MySQL server through socket '/tmp/mysql.sock

... Although in general following established diagnostic procedures is a good idea, if you read the question (and the procedures) you see that the procedures have been followed and have determined this is not a problem with the MySQL server. This is something specifically to do with the Python client ...
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How do I get the key at a specific index from a Dictionary in Swift?

...t about it is counter intuitive? Dictionaries are key, value pairs, so the idea of an index doesn't fix. Arrays are accessed by index, so this turns a dictionary INTO an Array, and then accesses the array by it's index. A dictionary like ["a": 1, "b": 2], can be turned into an array of dictionaries ...
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How do you add CSS with Javascript?

... Inline JavaScript using event handlers is a very bad idea. You should be separating your content from your functionality and binding event handlers in JavaScript - preferably in an external file. – Colonel Sponsz Nov 21 '12 at 15:30 ...
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“This project is incompatible with the current version of Visual Studio”

...sion or v4.5 . Not in the .csproj file and not in the .sln file .. Any ideas ? – eran otzap Jan 25 '15 at 21:22 @e...
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Search text in stored procedure in SQL Server

...ion 'Searchinall' expects parameter '@strFind', which was not supplied Any ideas? – gordon613 Apr 1 at 13:39 ...
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What does the “static” modifier after “import” mean?

... The basic idea of static import is that whenever you are using a static class,a static variable or an enum,you can import them and save yourself from some typing. I will elaborate my point with example. import java.lang.Math; class ...
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How to get the CPU Usage in C#?

...ons. Look at http://www.csharphelp.com/archives2/archive334.html to get an idea of what you can accomplish. Also helpful might be the MSDN reference for the Win32_Process namespace. See also a CodeProject example How To: (Almost) Everything In WMI via C#. ...
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Breaking out of nested loops [duplicate]

... This is a good idea. It doesn't call for creating a new exception class, and it's very easy to read. – Fábio Santos Dec 24 '12 at 12:12 ...
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How can a Javascript object refer to values in itself? [duplicate]

... Any idea why this returns undefined if an anonymous function is used instead? key2: ()=>this.key1+" works!" – Omar Sharaki Jun 25 at 8:40 ...