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How do I determine the size of my array in C?
...
For Windows API programming in C or C++, there is the ARRAYSIZE makro defined in WinNT.h (which gets pulled in by other headers). So WinAPI users don't need to define their own makro.
– Lumi
Apr 23 '14 at 8:24
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How can I produce an effect similar to the iOS 7 blur view?
...ode based on the view you will be presenting.
CGSize size = CGSizeMake(200,200);
UIGraphicsBeginImageContext(size);
[view drawViewHierarchyInRect:(CGRect){CGPointZero, w, h} afterScreenUpdates:YES]; // view is the view you are grabbing the screen shot of. The view that is to be blurred....
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
...max row for a given home i.e. for home = 10 you may get : 3 | 10 | 04/03/2009 | john | 300 In other words it doesn't guarantees that all column of a row in resultset will belong to max(datetime) for given home.
– sactiw
Nov 26 '15 at 12:07
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How do I wait for an asynchronously dispatched block to finish?
...RLResponse *) response statusCode];
XCTAssertEqual(statusCode, 200, @"status code was not 200; was %d", statusCode);
}
XCTAssert(data, @"data nil");
// do additional tests on the contents of the `data` object here, if you want
// when all done, Fulfill ...
What is __stdcall?
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C or C++ itself do not define those identifiers. They are compiler extensions and stand for certain calling conventions. That determines where to put arguments, in what order, where the called function will find the return address...
What's the difference between passing by reference vs. passing by value?
... and called function). Jon Skeet also has a nice explanation of this here.
C++ supports pass by value and pass by reference (reference parameter type used at called function). You will find an explanation of this below.
Codes
Since my language is C++, i will use that here
// passes a pointer (c...
How do I find the time difference between two datetime objects in python?
...time
>>> seconds_in_day = 24 * 60 * 60
datetime.timedelta(0, 8, 562000)
>>> divmod(difference.days * seconds_in_day + difference.seconds, 60)
(0, 8) # 0 minutes, 8 seconds
Subtracting the later time from the first time difference = later_time - first_time creates a datetime ...
What is a “cache-friendly” code?
...you can find detailed examples covering languages ranging from assembly to C++.
If you are into videos, I strongly recommend to have a look at Herb Sutter's talk on machine architecture (youtube) (specifically check 12:00 and onwards!).
Slides about memory optimization by Christer Ericson (director...
What does flushing the buffer mean?
I am learning C++ and I found something that I can't understand:
3 Answers
3
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Placing border inside of div and not on its edge
...ox-sizing: border-box;.
Consider this example:
.parent {
width: 200px;
}
.button {
background: #333;
color: #fff;
padding: 20px;
border: 5px solid #f00;
border-left-width: 20px;
box-sizing: border-box;
}
<div class='parent'>
<div class='bu...