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Proper use of 'yield return'
... }
}
}
If you use List instead of yield, you will need to allocation 1 million objects to memory (~190mb) and this simple example will take ~1400ms to run. However, if you use yield, you don't need to put all these temp objects to memory and you will get significantly faster algori...
How do you copy the contents of an array to a std::vector in C++ without looping?
...ce() first on the two iterators to get the needed number of elements, then allocate just once.
– Drew Hall
Nov 4 '08 at 2:38
4
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iOS difference between isKindOfClass and isMemberOfClass
...se
@interface A : NSObject
@end
@interface B : A
@end
...
id b = [[B alloc] init];
then
[b isKindOfClass:[A class]] == YES;
[b isMemberOfClass:[A class]] == NO;
Basically, -isMemberOfClass: is true if the instance is exactly of the specified class, while -isKindOfClass: is true if the ins...
What is the difference between exit and return? [duplicate]
...ogram after the processus stopped, hence it wouldn't make much difference: allocated memory will be freed, file ressource closed and so on. But it may matter if your destructor performs IOs. For instance automatic C++ OStream locally created won't be flushed on a call to exit and you may lose some u...
How to find a min/max with Ruby
...
Punctuation isn't the problem here. An entire heap allocation to get the max of a few values is the underlying ugliness here.
– kdbanman
Mar 7 '15 at 21:37
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UITableView load more when scrolling to bottom like Facebook application
...thIdentifier:cellIdentifier];
if (!cell)
{
cell = [[MyCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:MainMenuCellIdentifier];
}
MyData *data = [self.dataArray objectAtIndex:indexPath.row];
// Do your cell customisation
// cell.titleLabel.text =...
Why does changing 0.1f to 0 slow down performance by 10x?
... credits to Carl Hetherington [1])
[1] http://carlh.net/plugins/denormals.php
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Check for column name in a SqlDataReader object
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You're enumerating the field names multiple times / allocating another array to scan with a contains, this would be much less performant in high traffic code.
– Chad Grant
Oct 4 '19 at 17:44
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Find size of object instance in bytes in c#
...t one thing to keep in mind with garbage collected/managed runtimes is the allocated size of an object can change throughout the lifetime of the program. For example, some generational garbage collectors (such as the Generational/Ulterior Reference Counting Hybrid collector) only need to store certa...
Default value of BOOL
...nce variables of Objective-C objects are always set to 0 (or nil) when you allocate an object" and I cannot find any other, clearer, reference, so it's all a bit contradictory to me.
– Kristof Van Landschoot
Sep 9 '13 at 8:47
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