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Python != operation vs “is not”
...s whether the right hand side and the left hand side are equal objects (according to their __eq__ or __cmp__ methods.)
is is an identity test. It checks whether the right hand side and the left hand side are the very same object. No methodcalls are done, objects can't influence the is operation.
Y...
Single huge .css file vs. multiple smaller specific .css files? [closed]
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A CSS compiler like Sass or LESS is a great way to go. That way you'll be able to deliver a single, minimised CSS file for the site (which will be far smaller and faster than a normal single CSS source file), while maintaining the nicest development ...
How to prune local tracking branches that do not exist on remote anymore
With git remote prune origin I can remove the local branches that are not on the remote any more.
31 Answers
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What is the difference between setUp() and setUpClass() in Python unittest?
...erence between setUp() and setUpClass() in the Python unittest framework? Why would setup be handled in one method over the other?
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PHP: How to handle
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You're probably not accessing it correctly. You can output it directly or cast it as a string. (in this example, the casting is superfluous, as echo automatically does it anyway)
$content = simplexml_load_string(
'<content><![CDATA[Hello, world!...
Changing .prop using jQuery does not trigger .change event
...and not when value is modified using code.
Here you need to use .change() or .trigger("change") after changing the property:
$('input[type="checkbox"][name="something"]').prop("checked", false).change();
Working Demo
sha...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
... This way, you are avoiding the "diamond problem": en.wikipedia.org/wiki/Diamond_problem#The_diamond_problem
– Nick L.
Feb 13 '14 at 15:32
6
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String, StringBuffer, and StringBuilder
... a single thread then it is better to use StringBuilder. StringBuilder is more efficient than StringBuffer.
Situations:
If your string is not going to change use a String class because a String object is immutable.
If your string can change (example: lots of logic and operations in the constructi...
How do I convert a Ruby class name to a underscore-delimited symbol?
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Rails comes with a method called underscore that will allow you to transform CamelCased strings into underscore_separated strings. So you might be able to do this:
FooBar.name.underscore.to_sym
But you will have to install ActiveSupport just to do that, as ipsum...
Difference between Divide and Conquer Algo and Dynamic Programming
What is the difference between Divide and Conquer Algorithms and Dynamic Programming Algorithms? How are the two terms different? I do not understand the difference between them.
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