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do { … } while (0) — what is it good for? [duplicate]
... available in C#, too, which doesn't have macros. I'm not sure why someone down-voted this reply but I see it as the almost-right answer, except it overlooked the explicit "0" in the while condition. Please, people, if you down-vote someone's reply please comment.
– Jon Davis
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
...2 is equivalent to E1 = (T)((E1) op (E2)), so that's kind of like implicit down typecasting (down from long to int). Whereas in i = i+j, we have to do it explicitly, ie, provide the (T) part in E1 = ((E1) op (E2)) Isn't it?
– bad_keypoints
Sep 22 '12 at 14:52
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Is there any way to prevent input type=“number” getting negative values?
...:
It was only preventing negative numbers from being entered from
up/down arrows, whereas user can type negative number from keyboard.
Solution is to prevent with key code:
// Select your input element.
var number = document.getElementById('number');
// Listen for input event on num...
Enum String Name from Value
...munication problem. Are you on a mobile device or maybe did you not scroll down far enough? There are two exact copies of your answer from 7 years back. I named the answerers, so they sho
Reopen last closed tab in Visual Studio
... again. You can release Alt after the first Alt+F or you can still hold it down. But do not press it again.
– bugybunny
Nov 7 '18 at 16:02
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Practical usage of setjmp and longjmp in C
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Error handling
Suppose there is an error deep down in a function nested in many other functions and error handling makes sense only in the top level function.
It would be very tedious and awkward if all the functions in between had to return normally and evaluate return...
How do I restrict a float value to only two places after the decimal point in C?
...ing works:
#include <math.h>
float val = 37.777779;
float rounded_down = floorf(val * 100) / 100; /* Result: 37.77 */
float nearest = roundf(val * 100) / 100; /* Result: 37.78 */
float rounded_up = ceilf(val * 100) / 100; /* Result: 37.78 */
Notice that there are three different r...
Using wget to recursively fetch a directory with arbitrary files in it
... where I store some config files. I'd like to use wget to pull those files down and maintain their current structure. For instance, the remote directory looks like:
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The case against checked exceptions
... his work, this argument has always struck me as bogus. It basically boils down to:
"Checked exceptions are bad because programmers just abuse them by always catching them and dismissing them which leads to problems being hidden and ignored that would otherwise be presented to the user".
By ...
What is the best way to profile javascript execution? [closed]
...d be including DOM functions. This combined with actions that slows things down like operation on the rendering tree would be perfect. I think this would give a good impression if the performance is killed in my code, in DOM preparation or in updates to the rendering tree/visual.
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