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boost::flat_map and its performance compared to map and unordered_map

...e, because your cache will not be warm, and your operation will likely be called just once. Therefore you need to benchmark using RDTSC, and time stuff calling them once only. Intel has made a paper describing how to use RDTSC (using a cpuid instruction to flush the pipeline, and calling it at least...
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(HTML) Download a PDF file instead of opening them in browser when clicked

... Sometimes the question is wrong. ;) Anyways, regarding your issue, that's all a UX problem. Forcing the web to behave in specific ways is sometimes necessary, but often there's better solutions from a UX perspective. Also, my answer is correct. You can not do what you want to do with HTML (which is...
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How to increase the vertical split window size in Vim

:vsplit (short form: :vs ) split the Vim viewport vertically. :30vs splits the viewport, making the new window 30 characters wide. Once this 30 char window is created, how would one change it's size to 31 or 29? ...
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Why is there no xrange function in Python3?

...Some performance measurements, using timeit instead of trying to do it manually with time. First, Apple 2.7.2 64-bit: In [37]: %timeit collections.deque((x for x in xrange(10000000) if x%4 == 0), maxlen=0) 1 loops, best of 3: 1.05 s per loop Now, python.org 3.3.0 64-bit: In [83]: %timeit collec...
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Why won't my PHP app send a 404 error?

... Your code is technically correct. If you looked at the headers of that blank page, you'd see a 404 header, and other computers/programs would be able to correctly identify the response as file not found. Of course, your users are still SOL. N...
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window.close and self.close do not close the window in Chrome

...ec for window.close(): The close() method on Window objects should, if all the following conditions are met, close the browsing context A: The corresponding browsing context A is script-closable. The browsing context of the incumbent script is familiar with the browsing context A. Th...
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When should I write the keyword 'inline' for a function/method?

...cade later the compiler needs no such hints. Not to mention humans are usually wrong when it comes to optimizing code, so most compilers flat out ignore the 'hint'. static - the variable/function name cannot be used in other translation units. Linker needs to make sure it doesn't accidentally us...
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Retrieve the position (X,Y) of an HTML element relative to the browser window

...supported this since as long as you are likely to care about and it was finally standardized in CSSOM Views. All other browsers adopted it a long time ago. Some browsers also return height and width properties, though this is non-standard. If you're worried about older browser compatibility, che...
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Schema for a multilanguage database

...izability is not an issue. We can use language specific resources and have all kinds of tools that work well with them. 12 ...
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Read file from line 2 or skip header row

... This is fine UNTIL the file is too large to read. This is fine for small files. – CppLearner Feb 5 '18 at 2:05 1 ...