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Rename an environment with virtualenvwrapper
I have an environment called doors and I would like to rename it to django for the virtualenvwrapper .
2 Answers
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Checking if a folder exists (and creating folders) in Qt, C++
In Qt, how do I check if a given folder exists in the current directory?
If it doesn't exist, how do I then create an empty folder?
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How to get RGB values from UIColor?
I'm creating a color object using the following code.
15 Answers
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Check if a Class Object is subclass of another Class Object in Java
... easy, just do myField.getType().equals(String.class) . The same applies for other non-derived classes. But how do I check derived classes? E.g. LinkedList as subclass of List . I can't find any isSubclassOf(...) or extends(...) method. Do I need to walk through all getSuperClass() and fin...
A worthy developer-friendly alternative to PayPal [closed]
I understand payments are a tricky thing, but I'm yet to find a worthy alternative to PayPal. I want to change from PayPal because I think they are expensive and it doesn't work in all countries. Furthermore, I think that the API is sufficient, but could be better. The API documentation, however, is...
What's the difference between isset() and array_key_exists()? [duplicate]
... // false
array_key_exists('key2', $a); // true
There is another important difference: isset doesn't complain when $a does not exist, while array_key_exists does.
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C++ Redefinition Header Files (winsock2.h)
...Class.h in many files, so it includes multiple times and redefinition error occurs. How to prevent?
16 Answers
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What does a just-in-time (JIT) compiler do?
...runs after the program has started and compiles the code (usually bytecode or some kind of VM instructions) on the fly (or just-in-time, as it's called) into a form that's usually faster, typically the host CPU's native instruction set. A JIT has access to dynamic runtime information whereas a stand...
BigDecimal setScale and round
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One important point that is alluded to but not directly addressed is the difference between "precision" and "scale" and how they are used in the two statements. "precision" is the total number of significant digits in a number. "s...
jQuery get mouse position within an element
...could click inside a div, then drag the mouse, then let up on the mouse in order to indicate how long they want something to be. (This is for a calendar control, so the user will be indicating the length, in time, of a certain event)
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