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Short circuit Array.forEach like calling break
...cause some returns true as soon as any of the callbacks, executed in array order, return true, short-circuiting the execution of the rest.
some, its inverse every (which will stop on a return false), and forEach are all ECMAScript Fifth Edition methods which will need to be added to the Array.proto...
Explanation of strong and weak storage in iOS5
... all remaining weak pointers will be zeroed out.
Perhaps an example is in order.
Imagine our object is a dog, and that the dog wants to run away (be deallocated).
Strong pointers are like a leash on the dog. As long as you have the leash attached to the dog, the dog will not run away. If five peo...
How can I compare two lists in python and return matches
...>>> b = [9, 8, 7, 6, 5]
>>> set(a) & set(b)
{5}
if order is significant you can do it with list comprehensions like this:
>>> [i for i, j in zip(a, b) if i == j]
[5]
(only works for equal-sized lists, which order-significance implies).
...
How can I calculate the number of lines changed between two commits in git?
...han what he mentions. Since git log internally calls the diff machinery in order to print requested information, you can give it any of the diff stat options - not just --shortstat. What you likely want to use is:
git log --author="Your name" --stat <commit1>..<commit2>
but you can us...
Returning first x items from array
...
@ESCOBAR: associative arrays don't necessarily have an order, they only map keys to values; so "values 3 to 7" doesn't really make sense anyway …
– knittl
Jun 6 '14 at 15:45
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Non-recursive depth first search algorithm
... languages. pop() also works, and returns the child nodes in right-to-left order instead of left-to-right.
– Ariel
Jun 21 '11 at 3:57
5
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Is JavaScript guaranteed to be single-threaded?
...e something in the input before the focus() call unfocuses it, and the log order is log in, change, blur, log out, except in Opera where it's log in, blur, log out, change and IE where it's (even less explicably) log in, change, log out, blur.
Similarly calling click() on an element that provides i...
How is it possible to declare nothing inside main() in C++ and yet have a working application after
... ignore has to be initialized before entering into main() function. Now in order to initialize the global, print_fibs() needs to be executed where you can do anything — in this case, compute fibonacci numbers and print them! A similar thing I've shown in the following question (which I had asked l...
Run all SQL files in a directory
I have a number of .sql files which I have to run in order to apply changes made by other developers on an SQL Server 2005 database.
The files are named according to the following pattern:
...
Undefined, unspecified and implementation-defined behavior
... are described in this International Standard as unspecified (for example, order of evaluation of arguments to a function). Where possible, this International Standard defines a set of allowable behaviors. These define the nondeterministic aspects of the abstract machine.
Certain other operations ar...