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How do I iterate over an NSArray?
...generally-preferred code for 10.5+/iOS.
for (id object in array) {
// do something with object
}
This construct is used to enumerate objects in a collection which conforms to the NSFastEnumeration protocol. This approach has a speed advantage because it stores pointers to several objects (obt...
Visual Studio move project to a different folder
How do I move a project to a different folder in Visual Studio? I am used to this structure in my projects.
14 Answers
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How do I set $PATH such that `ssh user@host command` works?
...n-interactive non-login shells.
I expect the problem you're having has to do with the default Ubuntu ~/.bashrc file. It usually starts with something like this:
# If not running interactively, don't do anything
[ -z "$PS1" ] && return
You want to put anything for non-interactive shells ...
How do I clone a specific Git branch? [duplicate]
...cking out one. That may, for instance, mean that your repository has a 5kB documentation or wiki branch and 5GB data branch. And whenever you want to edit your frontpage, you may end up cloning 5GB of data.
Again, that is not to say git clone --branch is not the way to accomplish that, it's just th...
How do I auto size a UIScrollView to fit its content
...
UIScrollView doesn't know the height of its content automatically. You must calculate the height and width for yourself
Do it with something like
CGFloat scrollViewHeight = 0.0f;
for (UIView* view in scrollView.subviews)
{
scrollView...
How do I put two increment statements in a C++ 'for' loop?
...nd returns the second operand. Thus:
for(int i = 0; i != 5; ++i,++j)
do_something(i,j);
But is it really a comma operator?
Now having wrote that, a commenter suggested it was actually some special syntactic sugar in the for statement, and not a comma operator at all. I checked that in GCC a...
How do I determine whether an array contains a particular value in Java?
...
Arrays.asList(yourArray).contains(yourValue)
Warning: this doesn't work for arrays of primitives (see the comments).
Since java-8 you can now use Streams.
String[] values = {"AB","BC","CD","AE"};
boolean contains = Arrays.stream(values).anyMatch("s"::equals);
To check whether a...
What does a colon following a C++ constructor name do? [duplicate]
What does the colon operator (":") do in this constructor? Is it equivalent to MyClass(m_classID = -1, m_userdata = 0); ?
...
How to use concerns in Rails 4
... by myself. It is actually a pretty simple but powerful concept. It has to do with code reuse as in the example below. Basically, the idea is to extract common and / or context specific chunks of code in order to clean up the models and avoid them getting too fat and messy.
As an example, I'll put ...
How to resolve git stash conflict without commit?
...ll modifications to a commit (just like "git stash pop" without a conflict does).
10 Answers
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