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Will strlen be calculated multiple times if used in a loop condition?

...optimiser might be able to deduce that the value won't change, but I personally wouldn't rely on that. I'd do something like for (int i = 0, n = strlen(ss); i < n; ++i) or possibly for (int i = 0; ss[i]; ++i) as long as the string isn't going to change length during the iteration. If it mi...
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res.sendFile absolute path

...pond with index.html on every request, because I'm using a star * to catch all files that weren't found in your static (public) directory; which is the most common use case for web-apps. Change to / to return the index only in the root path. ...
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How can I find script's directory with Python? [duplicate]

... You need to call os.path.realpath on __file__, so that when __file__ is a filename without the path you still get the dir path: import os print(os.path.dirname(os.path.realpath(__file__))) ...
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How to set or change the default Java (JDK) version on OS X?

... those really are backticks the export line – David West Nov 27 '14 at 19:38 ...
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Cleanest way to get last item from Python iterator

...specific default value could even be correct? If the iterator doesn't actually iterate, then an out-of-band value is more meaningful than some misleading function-specific default. – S.Lott Jan 26 '10 at 11:44 ...
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What is an undefined reference/unresolved external symbol error and how do I fix it?

... token is converted into a token. (2.7). The resulting tokens are syntactically and semantically analyzed and translated as a translation unit. [SNIP] Translated translation units and instantiation units are combined as follows: [SNIP] All external entity references are resolved. Library components ...
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How can one use multi threading in PHP applications

... PHP documentation: pthreads is an object-orientated API that provides all of the tools needed for multi-threading in PHP. PHP applications can create, read, write, execute and synchronize with Threads, Workers and Threaded objects. Warning: The pthreads extension cannot be used in a web ...
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Python exit commands - why so many and when should each be used?

...s functionality was included to help people who do not know Python. After all, one of the most likely things a newbie will try to exit Python is typing in quit. Nevertheless, quit should not be used in production code. This is because it only works if the site module is loaded. Instead, this fun...
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Remove an item from array using UnderscoreJS

...r question). Then you would only iterate over array once instead of potentially twice like here. If you want to modify the array in-place, you have to use .splice. This is also shown in the other question and undescore doesn't seem to provide any useful function for that. ...
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How to check if one DateTime is greater than the other in C#

...swered Sep 18 '08 at 19:17 Jon GallowayJon Galloway 49k2424 gold badges118118 silver badges191191 bronze badges ...