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Javascript sort array by two fields
So the above code sorts the array by gsize - smallest to largest. It works good.
But if the gsize is the same I would like it to then sort by glow.
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Does the join order matter in SQL?
Disregarding performance, will I get the same result from query A and B below? How about C and D?
4 Answers
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How should I have explained the difference between an Interface and an Abstract class?
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I will give you an example first:
public interface LoginAuth{
public String encryptPassword(String pass);
public void checkDBforUser();
}
Suppose you have 3 databases in your application. Then each and every implementation ...
Differences between socket.io and websockets
...cket.io and websockets in
node.js?
Are they both server push technologies?
The only differences I felt was,
8 Answers...
Python syntax for “if a or b or c but not all of them”
...ve either zero or three command line arguments. (Either it runs on default behavior or needs all three values specified.)
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What is the best way to concatenate two vectors?
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AB.reserve( A.size() + B.size() ); // preallocate memory
AB.insert( AB.end(), A.begin(), A.end() );
AB.insert( AB.end(), B.begin(), B.end() );
share
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Insert an element at a specific index in a list and return the updated list
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l.insert(index, obj) doesn't actually return anything. It just updates the list.
As ATO said, you can do b = a[:index] + [obj] + a[index:].
However, another way is:
a = [1, 2, 4]
b = a[:]
b.insert(2, 3)
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What's a correct and good way to implement __hash__()?
... easy, correct way to implement __hash__() is to use a key tuple. It won't be as fast as a specialized hash, but if you need that then you should probably implement the type in C.
Here's an example of using a key for hash and equality:
class A:
def __key(self):
return (self.attr_a, sel...
String concatenation: concat() vs “+” operator
Assuming String a and b:
11 Answers
11
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Circular list iterator in Python
I need to iterate over a circular list, possibly many times, each time starting with the last visited item.
6 Answers
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