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HTML5 Canvas vs. SVG vs. div
... since selection and moving it around is already built in. SVG objects are DOM objects, so they have "click" handlers, etc.
DIVs are okay but clunky and have awful performance loading at large numbers.
Canvas has the best performance hands-down, but you have to implement all concepts of managed st...
Add new attribute (element) to JSON object using JavaScript
How do I add new attribute (element) to JSON object using JavaScript?
10 Answers
10
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What is the difference between exit and return? [duplicate]
... from. (After flushing stdio buffers and so on).
The only case when both do (nearly) the same thing is in the main() function, as a return from main performs an exit().
In most C implementations, main is a real function called by some startup code that does something like int ret = main(argc, argv...
Determine if variable is defined in Python [duplicate]
How do you know whether a variable has been set at a particular place in the code at runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I'm looking for something like defined() in Perl or isset() in PHP or...
PHP function overloading
...rload PHP functions. Function signatures are based only on their names and do not include argument lists, so you cannot have two functions with the same name. Class method overloading is different in PHP than in many other languages. PHP uses the same word but it describes a different pattern.
You ...
How to list out all the subviews in a uiviewcontroller in iOS?
...; // COUNT CHECK LINE
for (UIView *subview in subviews) {
// Do what you want to do with the subview
NSLog(@"%@", subview);
// List the subviews of subview
[self listSubviewsOfView:subview];
}
}
As commented by @Greg Meletic, you can skip the COUNT CHEC...
YouTube iframe API: how do I control an iframe player that's already in the HTML?
... at the source code for an explanation.
On 17 may 2012, the code size was doubled in order to take care of the player's ready state. If you need a compact function which does not deal with the player's ready state, see http://jsfiddle.net/8R5y6/.
/**
* @author Rob W <gwnRob@gmail.com>...
Filtering for empty or NULL names in a queryset
...
You could do this:
Name.objects.exclude(alias__isnull=True)
If you need to exclude null values and empty strings, the preferred way to do so is to chain together the conditions like so:
Name.objects.exclude(alias__isnull=True).excl...
Undoing a 'git push'
... :alpha-0.3.0
git push origin cc4b63bebb6:refs/heads/alpha-0.3.0
If this doesn't work - perhaps because you have receive.denyDeletes set, then you have to have direct access to the repository. In the remote repository, you then have to do something like the following plumbing command.
git update-...
partial string formatting
Is it possible to do partial string formatting with the advanced string formatting methods, similar to the string template safe_substitute() function?
...