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- Dictionarywhile/wʌɪl/
noun
- 1. a period of time: "we chatted for a while"
- 2. at the same time; meanwhile: "he starts to draw, talking the while"
conjunction
- 1. during the time that; at the same time as: "nothing much changed while he was away"
- 2. whereas (indicating a contrast): "one person wants out, while the other wants the relationship to continue"
relative
- 1. during which: "the period while the animal remains alive"
verb
- 1. pass time in a leisurely manner: "a diversion to while away the long afternoons"
preposition
- 1. until: Northern English "father will be happy while dinner time"
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Dec 27, 2022 · May 28, 2009 at 14:08. 1. For loops are used when you want to do operations on each member of a sequence, in order. While loops are used when you need to: operate on the elements out-of-order, access / operate on multiple elements simultaneously, or loop until some condition changes from True to False. – apraetor.
Apr 22, 2010 · The do while is a common convention which makes the macro require a trailing semi colon like a standard c function would. Other than that it just ensures the variable that has been freed is set to NULL so that any future calls to free it will not cause errors.
May 6, 2016 · @Saeed: Still -1, because while all we've been shown is the Category property, in real life I'd expect there to be more data in the object... which gets lost with your current code. As the OP says, he wants to remember the object he's just read , not reconstruct it from the one bit of information he's filtering on.
Mar 30, 2015 · If function1() is actually a macro, just using { } requires you to omit the semicolon at the point of use, but do { } while(0) lets you use exactly the same syntax as for a real function. (Not using any kind of block construct at all would just generate completely broken code, natch)
Jan 26, 2012 · 1.) target_compile_definitions. If you are using CMake 3.X your first choice for adding a preprocessor macro should be target_compile_definitions. The reason you should prefer this approach over any other approach is because it granularity is target based. IE the macro will only be added to your exe/library.
Generically, do / while is good for any sort of loop construct where one must execute the loop at least once. It is possible to emulate this sort of looping through either a straight while or even a for loop, but often the result is a little less elegant. I'll admit that specific applications of this pattern are fairly rare, but they do exist.
Nov 28, 2015 · Using #define in a while loop. Ask Question Asked 13 years, 4 months ago. Modified 8 years, 9 months ago.
Oct 15, 2019 · @Kirk - In part, I agree ,but the alternatives aren't much better. Ideally, the class you're using implements a generator and you can just use a for loop, but there are certain cases where you need a while loop ( e.g., 'while cur_time>expected_time:'). I don't know if the OPs post is much better, but I suppose its a matter of opinion :) –
Dec 22, 2009 · I'm often using do-while(0) constructs in my #defines, for the reasons described in this answer. Also, I'm trying to set the compiler's warning level as high as possible to catch more potential problems and make my code more robust and cross-platform.
2013 answer: You can't do that in Python, no assignment in expressions. At least that means you won't accidentally type == instead of = or the other way around and have it work. Traditional Python style is to just use while True and break: while True: data = fgetcsv(fh, 1000, ",") if not data: break. # Use data here.
