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Using custom std::set comparator
...&)> mySet(&comparator);
which is irritating to type out every time you need a set of that type, and can cause issues if you don't create all sets with the same comparator.
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impro...
Hand Coded GUI Versus Qt Designer GUI [closed]
...em by hand if you really wanted to) can often be dynamically loaded at run-time (Qt and GTK+ both provide this feature). This means that you can make layout changes and test them without recompiling.
Ultimately, I think both raw code and UI tools can be effective. It probably depends a lot on the ...
Why doesn't Objective-C support private methods?
...me dynamic method resolution point as every other method dispatch. At runtime, every method implementation has the exact same exposure and all of the APIs provided by the Objective-C runtime that work with methods and selectors work equally the same across all methods.
As many have answered (both...
PHP Array to CSV
...hp://memory','w');
$header=array("asdf ","asdf","asd","Calasdflee","Start Time","End Time" );
fputcsv($f,$header);
fputcsv($f,$header);
fputcsv($f,$header);
fseek($f,0);
header('content-type:text/csv');
header('Content-Disposition: attachment; filename="' . $filename . '";');
fpassth...
Why are regular expressions so controversial? [closed]
...ssions provide an effective, compact solution to the problem, they are sometimes shoehorned into situations where it's better to use an easy-to-read, maintainable section of code instead.
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In log4j, does checking isDebugEnabled before logging improve performance?
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String.format is 40 times slower than concat & slf4j has limitation of 2 params See numbers here: stackoverflow.com/questions/925423/… I have seen many a profiler graph where the format operation is wasted in debug statements when the p...
DLL and LIB files - what and why?
...ction working correctly you don't want to have to recompile the code every time you use it, so you put the executable code for that function in a library, and the linker can extract and insert the compiled code into your program. Static libraries are sometimes called 'archives' for this reason.
Dy...
Splitting on last delimiter in Python string?
....rsplit(',', 1)
s.rpartition(',')
str.rsplit() lets you specify how many times to split, while str.rpartition() only splits once but always returns a fixed number of elements (prefix, delimiter & postfix) and is faster for the single split case.
Demo:
>>> s = "a,b,c,d"
>>> ...
Is it possible to program iPhone in C++
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Objective-C and C++ came about at around the same time, both with the goal of adding object oriented programming to C. Objective-C followed Smalltalk’s model of everything being dynamic dispatch, C++ chose to use function pointers (virtual methods) basically. The weird sy...
Common elements in two lists
... Contains looks like it'd be an O(n) operation, which would be called n times, unless the compiler does something clever. Does anyone know whether the above runs in linear or quadratic time?
– Regorsmitz
Aug 12 '16 at 20:56
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