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Why is volatile needed in C?
...laying with data that isn't concurrency protected. And yes there are valid times to be doing that, you can for example write a thread safe circular message queue without needing explicit concurrency protection, but it will need volatiles.
– Gordon Wrigley
Oct 2...
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...
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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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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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"
>>> ...
How can I comment a single line in XML?
...the bottom comment. The downside is having to edit the bottom comment each time, which would probably make it easier to just type in <!-- at the top and --> at the bottom each time.
I also want to mention that other commenters recommend using an XML editor that allows you to right-click and c...
Add file extension to files with bash
... this elegant and simple solution -- I have landed on this answer multiple times, but can't seem to memorize it. #dejavu
– Tim Andersen
Jan 30 '19 at 18:11
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Forced naming of parameters in Python
...ther alternatives can be anticipated.
Cons:
Checking occurs during run-time, not compile-time.
Use of an extra parameter (though not argument) and an additional check. Small performance degradation respect to regular functions.
Functionality is a hack without direct support by the language (see...
Remove all occurrences of a value from a list?
...list (up until they find a match) so you end up scanning the list multiple times that way.
– John Kugelman
Jul 21 '09 at 3:24
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