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Multi-key dictionary in c#? [duplicate]
...ine a tuple as a struct:
public struct Tuple<T1, T2> {
public readonly T1 Item1;
public readonly T2 Item2;
public Tuple(T1 item1, T2 item2) { Item1 = item1; Item2 = item2;}
}
public static class Tuple { // for type-inference goodness.
public static Tuple<T1,T2> Create&...
Cannot delete directory with Directory.Delete(path, true)
...it is factually incorrect about the workings of Directory.Delete. Please read the comments for this answer, and other answers to this question.
I ran into this problem before.
The root of the problem is that this function does not delete files that are within the directory structure. So what you...
What does if __name__ == “__main__”: do?
...
Whenever the Python interpreter reads a source file, it does two things:
it sets a few special variables like __name__, and then
it executes all of the code found in the file.
Let's see how this works and how it relates to your question about the __name__...
How to change the output color of echo in Linux
...ued from above example
echo -e "I ${RED}love${NC} Stack Overflow"
(don't add "\n" when using echo unless you want to add additional empty line)
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Why do I need an IoC container as opposed to straightforward DI code? [closed]
...d to use an Inversion of Control (IoC) container. However, the more I read, the more pressure I feel from the community to use an IoC container.
...
valueOf() vs. toString() in Javascript
...cript first collects primitive values of the operands, and then decides if addition or concatenation should be applied, based on the type of each primitive.
So, this is how you think it works
a + b:
pa = ToPrimitive(a)
if(pa is string)
return concat(pa, ToString(b))
else
...
How do I integrate Ajax with Django applications?
...ugh this isn't entirely in the SO spirit, I love this question, because I had the same trouble when I started, so I'll give you a quick guide. Obviously you don't understand the principles behind them (don't take it as an offense, but if you did you wouldn't be asking).
Django is server-side. It m...
Heap vs Binary Search Tree (BST)
... this answer
***: log(n) for pointer tree heap, n for dynamic array heap
Advantages of binary heap over a BST
average time insertion into a binary heap is O(1), for BST is O(log(n)). This is the killer feature of heaps.
There are also other heaps which reach O(1) amortized (stronger) like the F...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...ave the choice in between either having a bunch of mutexes (like what pthread gives me or whatever the native system library provides) or a single one for an object.
...
Is C++ context-free or context-sensitive?
..." grammar) are collected in Appendix A, with this important note (emphasis added):
This summary of C++ syntax is intended to be an aid to comprehension. It is not an exact statement of the language. In particular, the grammar described here accepts a superset of valid C++ constructs. Disambiguat...