大约有 8,130 项符合查询结果(耗时:0.0250秒) [XML]

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Is Fortran easier to optimize than C for heavy calculations?

... The languages have similar feature-sets. The performance difference comes from the fact that Fortran says aliasing is not allowed, unless an EQUIVALENCE statement is used. Any code that has aliasing is not valid Fortran, but it is up to the programmer and not the compil...
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How do I verify/check/test/validate my SSH passphrase?

I think I forgot the passphrase for my SSH key, but I have a hunch what it might be. How do I check if I'm right? 5 Answer...
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How to use concerns in Rails 4

The default Rails 4 project generator now creates the directory "concerns" under controllers and models. I have found some explanations about how to use routing concerns, but nothing about controllers or models. ...
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Start / Stop a Windows Service from a non-Administrator user account

...e named, say, BST. And I need to give a non-Administrator user, UserA, the permissions to Start/Stop this particular service. My service runs on a variety of Windows OS, starting from Windows Server 2003 to Windows 7. ...
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What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos

Ive got a bunch of rectangular objects which I need to pack into the smallest space possible (the dimensions of this space should be powers of two). ...
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Biggest GWT Pitfalls? [closed]

I'm at the beginning/middle of a project that we chose to implement using GWT. Has anyone encountered any major pitfalls in using GWT (and GWT-EXT) that were unable to be overcome? How about from a performance perspective? ...
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What is the advantage of using REST instead of non-REST HTTP?

Apparently, REST is just a set of conventions about how to use HTTP . I wonder which advantage these conventions provide. Does anyone know? ...
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Add Keypair to existing EC2 instance

... access to an account with 2 instances running that I cannot shut down (in production). I would however like to gain SSH access to these instances, is it possible to create a new Keypair and apply it to the instances so I can SSH in? Obtaining the exisiting pem file for the keypair the instances wer...
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What is the ultimate postal code and zip regex?

I'm looking for the ultimate postal code and zip code regex. I'm looking for something that will cover most (hopefully all) of the world. ...
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Where should I put tags in HTML markup?

When embedding JavaScript in an HTML document, where is the proper place to put the <script> tags and included JavaScript? I seem to recall that you are not supposed to place these in the <head> section, but placing at the beginning of the <body> section is bad, too, since th...