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How do I find the length of an array?
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If you mean a C-style array, then you can do something like:
int a[7];
std::cout << "Length of array = " << (sizeof(a)/sizeof(*a)) << std::endl;
This doesn't work on pointers (i.e. it won't work for either of the following):
int *p = new int[7];...
NSOperation vs Grand Central Dispatch
...rency model. NSOperation and NSOperationQueue are Objective-C classes that do a similar thing. NSOperation was introduced first, but as of 10.5 and iOS 2, NSOperationQueue and friends are internally implemented using GCD.
In general, you should use the highest level of abstraction that suits your n...
How do I use vi keys in ipython under *nix?
...le_default/ipython_config.py; create it with ipython profile create if you don't have it) with:
c.TerminalInteractiveShell.editing_mode = 'vi'
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Best way to define private methods for a class in Objective-C
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with the LLVM 4 compiler and onwards, you don't even need to do this. you can just define them within your implementation without needing to put them in a class extension.
– Abizern
Jul 23 '12 at 14:39
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How to hide command output in Bash
I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is executing commands?
7 A...
One SVN repository or many?
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The single vs. multiple issue comes down to personal or organizational preference.
Management of multiple vs. single mainly comes down to access control and maintenance.
Access control for a single repository can be contained in a single file; Multiple repos...
Determine if an element has a CSS class with jQuery
...g representing the class you are checking, and it returns a boolean (so it doesn't support chaining like most jQuery methods).
Note: If you pass a className argument that contains whitespace, it will be matched literally against the collection's elements' className string. So if, for instance, you ...
git recover deleted file where no commit was made after the delete
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The output tells you what you need to do. git reset HEAD cc.properties etc.
This will unstage the rm operation. After that, running a git status again will tell you that you need to do a git checkout -- cc.properties to get the file back.
Update:
I have this ...
How do I restrict a float value to only two places after the decimal point in C?
...ing works:
#include <math.h>
float val = 37.777779;
float rounded_down = floorf(val * 100) / 100; /* Result: 37.77 */
float nearest = roundf(val * 100) / 100; /* Result: 37.78 */
float rounded_up = ceilf(val * 100) / 100; /* Result: 37.78 */
Notice that there are three different r...
How stable is the git plugin for eclipse?
... both with itself and with the canonical C based implementation, but that doesn't mean it won't generate a corrupt object." (from the README)
– jcollum
Jan 18 '13 at 0:38
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