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Why Choose Struct Over Class?
...
Since struct instances are allocated on stack, and class instances are allocated on heap, structs can sometimes be drastically faster.
However, you should always measure it yourself and decide based on your unique use case.
Consider the following exa...
The new syntax “= default” in C++11
...ct in the memory started from address of variable x (instead of new memory allocation). This syntax is used to create object at pre-allocated memory. As in our case the size of B = the size of int, so new(&x)A() will create new object in the place of x variable.
– Slavenski...
UITableViewCell with UITextView height in iOS 7?
... andWidth: (CGFloat)width {
UITextView *calculationView = [[UITextView alloc] init];
[calculationView setAttributedText:text];
CGSize size = [calculationView sizeThatFits:CGSizeMake(width, FLT_MAX)];
return size.height;
}
This function will take a NSAttributedString and the desired ...
Why is exception handling bad?
...ly; since the finally block is guaranteed to be executed, objects can be deallocated there. The rest should be taken care of by variables going out of scope and garbage collection.
– Robert Harvey
Nov 17 '09 at 17:20
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Functional programming - is immutability expensive? [closed]
...his algorithm has a very poor cache locality. I don’t know whether smart allocators in modern functional programming languages can mitigate this – but on modern machines, cache misses have become a major performance killer.
What’s the conclusion? Unlike others, I wouldn’t say that quickso...
How to play a local video with Swift?
...scussion Video Player
@code
self.videoPlayer = [[VideoPlayer alloc] initVideoPlayerWithURL:someURL playerView:self.playerView];
[self.videoPlayer prepareToPlay];
self.videoPlayer.delegate = self; //optional
//after when required play item
[self.vide...
Is Java “pass-by-reference” or “pass-by-value”?
...isName;
shout(myName);
}
One String gets created and space for it is allocated in the heap, and the address to the string is stored on the stack and given the identifier hisName, since the address of the second String is the same as the first, no new String is created and no new heap space is ...
How to get JSON response from http.Get
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@NamGVU saves a potential allocation and allows the use of http keep-alive to reuse connections.
– Connor Peet
Nov 27 '17 at 22:16
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Do you need to dispose of objects and set them to null?
...t will still release the unmanaged resources. This means that instead of deallocating the resources when it should be done, it will be deferred to when the garbage collector finalizes the managed object. It can still cause many other issues though (such as unreleased locks). You should Dispose an ID...
What XML parser should I use in C++? [closed]
...is painful for writing XML. It requires you to do a lot of explicit memory allocation of string names in order to build its DOM. It does provide a kind of string buffer, but that still requires a lot of explicit work on your end. It's certainly functional, but it's a pain to use.
It uses the MIT lic...