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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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Sep 2, 2010 · 0. The most important difference between while and do-while loop is that in do-while, the block of code is executed at least once, even though the condition given is false. To put it in a different way : While- your condition is at the begin of the loop block, and makes possible to never enter the loop.
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.
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. So I'm typically using
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)
Nov 28, 2015 · for or while loop inside #define directive. 1. defining #define macro. 0. use of #define in c. 27. Using #define in C Program . 1. Using #define wit ...
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.
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.
This will compile and work as expected, but this is not uniform. The more elegant solution is to make sure that macro expand into a regular statement, not into a compound one. One way to achieve that is to define the macro as follows: #define CALL_FUNCS(x) \ do { \ func1(x); \ func2(x); \ func3(x); \ } while (0) Now this code:
Feb 13, 2020 · 137. while True means loop forever. The while statement takes an expression and executes the loop body while the expression evaluates to (boolean) "true". True always evaluates to boolean "true" and thus executes the loop body indefinitely. It's an idiom that you'll just get used to eventually!
period=0. tmp=universe_array. while True: tmp=apply_rules(tmp)#aplly_rules is a another function. period+=1. if numpy.array_equal(tmp,universe_array) is True: break #i want the loop to stop and return 0 if the. #period is bigger than 12. if period>12: #i wrote this line to stop it..but seems it.
