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How does BLAS get such extreme performance?

...t all). IMHO no BLAS implementation uses algorithms like the Coppersmith–Winograd algorithm or the Strassen algorithm. The likely reasons are: Maybe its not possible to provide a cache optimized implementation of these algorithms (i.e. you would loose more then you would win) These algorithms a...
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Sibling package imports

...located at C:\tmp\test_imports\. api.py As a test case, let's use the following ./api/api.py def function_from_api(): return 'I am the return value from api.api!' test_one.py from api.api import function_from_api def test_function(): print(function_from_api()) if __name__ == '__main__': ...
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Why would one omit the close tag?

...; at the end of the file. The header problem seems irrelevant in the following context (and this is the only good argument so far): ...
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When do you use POST and when do you use GET?

... to provide the PUT and DELETE calls also. But, even if you are not following RESTful principles, it can be useful to think in terms of using GET for retrieving / viewing information and POST for creating / editing information. You should never use GET for an operation which alters data. If a se...
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Regular expression that matches valid IPv6 addresses

...}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])) For ease of reading, the following is the above regular expression split at major OR points into separate lines: # IPv6 RegEx ( ([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}| # 1:2:3:4:5:6:7:8 ([0-9a-fA-F]{1,4}:){1,7}:| # 1:: ...
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asynchronous vs non-blocking

...t when is a good time to retry. But asynchronous sockets (as supported by Windows sockets), or the asynchronous IO pattern used in .NET, are more convenient. You call a method to start an operation, and the framework calls you back when it's done. Even here, there are basic differences. Asynchronou...
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Do you put unit tests in same project or another project?

...e small conveniences go a long way when writing tests. Personal preference wins here, and sometimes your points are relevant, just not all the time. – orip Dec 7 '08 at 9:06 7 ...
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How to detect when cancel is clicked on file input?

...quiring a pretty limiting event blocking) you can achieve it with the following: document.body.onfocus = function(){ /*rock it*/ } What's nice about this, is that you can attach/detach it in time with the file event, and it also seems to work fine with hidden inputs (a definite perk if you're usi...
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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery

...ay to detect whether the OS on which the browser is running is Mac OS X or Windows? If not, what's better than user agent sniffing? ...
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Is there a way to crack the password on an Excel VBA Project?

...ng, ByVal hWndParent As Long, _ ByVal lpDialogFunc As Long, ByVal dwInitParam As Long) As Integer Dim HookBytes(0 To 5) As Byte Dim OriginBytes(0 To 5) As Byte Dim pFunc As Long Dim Flag As Boolean Private Function GetPtr(ByVal Value As Long) As Long GetPtr = Value End Function Public...