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Is List a subclass of List? Why are Java generics not implicitly polymorphic?
I'm a bit confused about how Java generics handle inheritance / polymorphism.
17 Answers
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How to quickly clear a JavaScript Object?
With a JavaScript Array, I can reset it to an empty state with a single assignment:
8 Answers
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Where is the itoa function in Linux?
itoa() is a really handy function to convert a number to a string. Linux does not seem to have itoa() , is there an equivalent function or do I have to use sprintf(str, "%d", num) ?
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How can HTML5 “replace” Flash? [closed]
...n is the combination of HTML as a markup language, CSS which specifies how it is rendered, and the javascript code which manipulates the HTML and CSS dynamically.
Furthermore, HTML5 not only has the standard text elements, but also <canvas> on which 2d graphics can be drawn, and <video>...
Remove IE10's “clear field” X button on certain inputs?
It's a useful feature, to be sure, but is there any way to disable it?
For instance, if the form is a single text field and already has a "clear" button beside it, it's superfluous to also have the X. In this situation, it would be better to remove it.
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Using querySelectorAll to retrieve direct children
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Good question. At the time it was asked, a universally-implemented way to do "combinator rooted queries" (as John Resig called them) did not exist.
Now the :scope pseudo-class has been introduced. It is not supported on [pre-Chrominum] versions of Edg...
What is the difference between a mutable and immutable string in C#?
..."cannot change" respectively. The meaning of the words is the same in the IT context; i.e.
a mutable string can be changed, and
an immutable string cannot be changed.
The meanings of these words are the same in C# / .NET as in other programming languages / environments, though (obviously) the n...
What is the purpose of a stack? Why do we need it?
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UPDATE: I liked this question so much I made it the subject of my blog on November 18th 2011. Thanks for the great question!
I've always wondered: what is the purpose of the stack?
I assume you mean the evaluation stack of the MSIL language, and not the actual pe...
Git “error: The branch 'x' is not fully merged”
...changed in response to the commments. Thanks @slekse
That is not an error, it is a warning. It means the branch you are about to delete contains commits that are not reachable from any of: its upstream branch, or HEAD (currently checked out revision). In other words, when you might lose commits¹.
I...
Static class initializer in PHP
I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor).
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