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java: Class.isInstance vs Class.isAssignableFrom
...whenever the class represented by the clazz object is a superclass or superinterface of Foo.
clazz.isInstance(obj) will be true whenever the object obj is an instance of the class clazz.
That is:
clazz.isAssignableFrom(obj.getClass()) == clazz.isInstance(obj)
is always true so long as clazz an...
Remote Connections Mysql Ubuntu
...I've been unable to connect remotely to my MySQL server. I've tried everything and I'm still getting errors.
5 Answers
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iPad browser WIDTH & HEIGHT standard
Does anyone know the safest width and height for the BODY when viewing any web page on the iPad? I want to avoid the scrollbars as much as possible.
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What is a message pump?
In this thread (posted about a year ago) there is a discussion of problems that can come with running Word in a non-interactive session. The (quite strong) advice given there is not to do so. In one post it is stated "The Office APIs all assume you are running Office in an interactive session on...
How do I add a tool tip to a span element?
In the following code, I want a tool-tip to come up when the user hovers the span, how do I do that? I don't want to use any links.
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What's the difference between “declare class” and “interface” in TypeScript
In TypeScript, when creating .d.ts source declaration files, which is preferable and why?
4 Answers
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Java SafeVarargs annotation, does a standard or best practice exist?
I've recently come across the java @SafeVarargs annotation. Googling for what makes a variadic function in Java unsafe left me rather confused (heap poisoning? erased types?), so I'd like to know a few things:
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Which, if any, C++ compilers do tail-recursion optimization?
... to me that it would work perfectly well to do tail-recursion optimization in both C and C++, yet while debugging I never seem to see a frame stack that indicates this optimization. That is kind of good, because the stack tells me how deep the recursion is. However, the optimization would be kind of...
Returning first x items from array
...an array
$sliced_array = array_slice($array, 0, 5)
is the code you want in your case to return the first five elements
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Getting root permissions on a file inside of vi? [closed]
Often while editing config files, I'll open one with vi and then when I go to save it realize that I didn't type
10 Answers...