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NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ programmers would think of as a pointer to an object. Use NULL for non-object pointers.
Look at the declaration of that method:
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object
change:(NSDi...
How could the UNIX sort command sort a very large file?
The UNIX sort command can sort a very large file like this:
7 Answers
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How to install an npm package from GitHub directly?
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Because https://github.com/visionmedia/express is the URL of a web page and not an npm module. Use this flavor:
git+https://github.com/visionmedia/express.git
or this flavor if you need SSH:
git+ssh://git@github.com/visionmedia/express.git
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How can I generate a diff for a single file between two branches in github
... me to do this for all changed files, but that's no good as there are thousands of files in my repo.
5 Answers
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View not attached to window manager crash
...ashes. I was getting a View not attached to window manager error message and thought I had fixed it by wrapping the pDialog.dismiss(); in an if statement:
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Converting String to “Character” array in Java
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I wish ArrayUtils is standard in JVMs!
– Alvin
Apr 4 '12 at 6:58
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Modern way to filter STL container?
...std::copy_if evaluates the lambda expression for every element in foo here and if it returns true it copies the value to bar.
The std::back_inserter allows us to actually insert new elements at the end of bar (using push_back()) with an iterator without having to resize it to the required size firs...
How can I check if a key exists in a dictionary? [duplicate]
...y:
# do something
Associative arrays are called dictionaries in Python and you can learn more about them in the stdtypes documentation.
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How to configure an existing git repo to be shared by a UNIX group
...sets some important variables in repodir/config ("core.sharedRepository=2" and "receive.denyNonFastforwards=true")
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Text vertical alignment in WPF TextBlock
...ure that's always true. I've got this set-up, the border has height "Auto" and it's working fine. It's in a grid cell with starred row heights (and other things in the row).
– Bob Sammers
Apr 29 '15 at 7:17
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