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Scala Doubles, and Precision
...likely, I'd say. Anything involving grids or finance can require rounding and also performance.
– Rex Kerr
Jun 19 '12 at 20:33
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Deleting array elements in JavaScript - delete vs splice
...ice(start, deleteCount) actually removes the element, reindexes the array, and changes its length.
> myArray = ['a', 'b', 'c', 'd']
["a", "b", "c", "d"]
> myArray.splice(0, 2)
["a", "b"]
> myArray
["c", "d"]
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Would it be beneficial to begin using instancetype instead of id?
...ype that, as far as I can see, replaces id as a return type in -alloc and init .
4 Answers
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Can I use git diff on untracked files?
...diff output, or is my best bet to use git add on the newly created files and the existing files I have edited, then use:
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fatal: could not read Username for 'https://github.com': No such file or directory
...y added 'origin github'. I removed the origin [ git remote remove origin ] and then wrote what is in the answer with my username and password and it worked fine.
– P_Rein
Jun 4 '14 at 13:11
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What are best practices for validating email addresses on iOS 2.0
...his modification of DHValidation:
- (BOOL) validateEmail: (NSString *) candidate {
NSString *emailRegex =
@"(?:[a-z0-9!#$%\\&'*+/=?\\^_`{|}~-]+(?:\\.[a-z0-9!#$%\\&'*+/=?\\^_`{|}"
@"~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\"
@"x7f]|\\\\[\\x01-\\x09\\x0b\\x0c...
PHP abstract properties
...s of data reserved in memory on initialization.
A function on the other hand can be declared (types, name, parameters) without being defined (function body missing) and thus, can be made abstract.
"Abstract" only indicates that something was declared but not defined and therefore before using it,...
Why is a pure virtual function initialized by 0?
...He also states explicitly that this need not set the vtable entry to NULL, and that doing so is not the best way of implementing pure virtual functions.
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Why does setTimeout() “break” for large millisecond delay values?
...y presume this is causing some form of internal exception in the JS Engine and causing the function to fire immediately rather than not at all.
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javascript set a variable if undefined
I know that I can test for a javascript variable and then define it if it is undefined, but is there not some way of saying
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