大约有 41,000 项符合查询结果(耗时:0.0581秒) [XML]

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Why / when would it be appropriate to override ToString?

...t is common to all objects and thus other classes know about this method. For instance, whenever the .NET framework wants to convert an object to a string representation, ToString is a prime candidate (there are others, if you want to provide more elaborate formatting options). Concretely, Consol...
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What are the best practices for using a GUID as a primary key, specifically regarding performance?

...y Key in almost all tables and I have read that there are issues about performance when using GUID as Primary Key. Honestly, I haven't seen any problem, but I'm about to start a new application and I still want to use the GUIDs as the Primary Keys, but I was thinking of using a Composite Primary Key...
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Force R not to use exponential notation (e.g. e+10)?

Can I force R to use regular numbers instead of using the e+10 -like notation? I have: 4 Answers ...
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Exporting a function in shell

Please tell me how to export a function in parent shell (bash, sh or ksh) so that the function will be available to all the child process launced from the parent process? ...
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Can I avoid the native fullscreen video player with HTML5 on iPhone or android?

...t code that renders other content synchronized with the running video. It works great in desktop browsers: Firefox, Chrome, and Safari. On an iPhone or a DroidX, the native video player pops up and takes over the screen, thus obscuring the other dynamic content that I want to display simultaneously ...
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How does JavaScript .prototype work?

... head around this prototype-based programming, does any one know how this works? 26 Answers ...
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How does SIGINT relate to the other termination signals such as SIGTERM, SIGQUIT and SIGKILL?

On POSIX systems, termination signals usually have the following order (according to many MAN pages and the POSIX Spec): 6 ...
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Common programming mistakes for Clojure developers to avoid [closed]

...leading zeros to maintain proper rows and columns. Mathematically this is correct, since leading zero obviously don't alter the underlying value. Attempts to define a var with this matrix, however, would fail mysteriously with: java.lang.NumberFormatException: Invalid number: 08 which totally baf...
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What is managed or unmanaged code in programming?

I am using a specific command in in my C# code, which works well. However, it is said to misbehave in "unmanaged" code. 13 ...
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Array.Copy vs Buffer.BlockCopy

... Should you use it at any time when you are copying primitive type arrays, or should you only use it if you're coding for performance? Is there anything inherently dangerous about using Buffer.BlockCopy over Array.Copy ? ...