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When should you not use virtual destructors?
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Virtual functions mean every allocated object increases in memory cost by a virtual function table pointer.
So if your program involves allocating a very large number of some object, it would be worth avoiding all virtual functions in order to save the ...
Compare if two variables reference the same object in python
... @Bill: That is an artefact of how python handles ints. Python allocates integer objects to which x and z point. Since small integers are failry common (-1 as an error value, 0 any time you actually index something, small numbers are usually reasonable default values) Python optimizes by...
What should I put in a meteor .gitignore file?
...ccepted answer won't prevent you from publishing your social media and AWS tokens in your settings.json.
– Jesse
Apr 22 '15 at 13:47
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How to cast an object in Objective-C
...g works as it does in C:
myEditController = [[SelectionListViewController alloc] init];
((SelectionListViewController *)myEditController).list = listOfItems;
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What Are Some Good .NET Profilers?
...o file)
Scitech .NET Memory Profiler
Shows stack trace when object was allocated. This is really useful for objects that are allocated in lots of different places. With ANTS it is difficult to determine exactly where the leaked object was created.
Shows count of disposable objects that were not ...
Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
... your cache.
Now to test this theory there are couple things you can do:
Allocate your array matice2 array like this matice2 [razmor, 4096], and run with razmor = 1024, 1025 or any size, and you should see very bad performance compared to what you had before. This is because you forcefully align a...
Create UIActionSheet 'otherButtons' by passing in array, not varlist
... Button",@"4th Button"];
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Title Here"
delegate:self
cancelButtonTitle:nil
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Regex Last occurrence?
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In a Tempered Greedy Token, the dot should always come after the lookahead: (?:(?!\\).)+. (ref) Also, your example on RegExr uses two backslashes to separate path components; there should be only one, and the regex should match only one. (demo)
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get size of json object
...If you execute the above statements, it will give you an error 'Unexpected token o in Json'. For calculating the length of json you can directly do var length= Object.keys(json).length.
– Aayushi
Jul 16 '17 at 18:03
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Split string into an array in Bash
...NU version of the manual does slightly better, since it opts for the word "tokens" instead of "words" in the first sentence of the Expansion section:
Expansion is performed on the command line after it has been split into tokens.
The important point is, $IFS does not change the way bash parses...