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What is the difference between const int*, const int * const, and int const *?
...ata segment of a program and shouldn't be changed.
bar is a constant or fixed pointer to a value that can be changed. This is like a reference without the extra syntactic sugar. Because of this fact, usually you would use a reference where you would use a T* const pointer unless you need to allow N...
How to add property to a class dynamically?
...
I suppose I should expand this answer, now that I'm older and wiser and know what's going on. Better late than never.
You can add a property to a class dynamically. But that's the catch: you have to add it to the class.
>>> class Fo...
Switch on ranges of integers in JavaScript [duplicate]
...
Here is another way I figured it out:
const x = this.dealer;
switch (true) {
case (x < 5):
alert("less than five");
break;
case (x < 9):
alert("between 5 and 8");
break;
case (x < 12):
alert("between 9 and 11...
How to initialize all members of an array to the same value?
...
@CetinSert: What do you mean it doesn't work? It does exactly what this answer says it should do. It doesn't do what the comment in your code says, but that comment is wrong.
– Benjamin Lindley
Apr 19 '13 at 3:58
...
Algorithm to detect intersection of two rectangles?
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The standard method would be to do the separating axis test (do a google search on that).
In short:
Two objects don't intersect if you can find a line that separates the two objects. e.g. the objects / all points of an object are on different sides of the line.
The fun t...
How do you divide each element in a list by an int?
...omprehension:
myList = [10,20,30,40,50,60,70,80,90]
myInt = 10
newList = [x / myInt for x in myList]
or, if you need to maintain the reference to the original list:
myList[:] = [x / myInt for x in myList]
share
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How do I get the coordinates of a mouse click on a canvas element?
... way to add a click event handler to a canvas element that will return the x and y coordinates of the click (relative to the canvas element)?
...
Circle-Rectangle collision detection (intersection)
...oint in the circle.
Note that this does not require the rectangle to be axis-parallel.
(One way to see this: if none of the edges has a point in the circle (if all the edges are completely "outside" the circle), then the only way the circle can still intersect the polygon is if it lies complet...
What __init__ and self do on Python?
...
In this code:
class A(object):
def __init__(self):
self.x = 'Hello'
def method_a(self, foo):
print self.x + ' ' + foo
... the self variable represents the instance of the object itself. Most object-oriented languages pass this as a hidden parameter to the methods d...
Why does C++ require a user-provided default constructor to default-construct a const object?
...a member M of T has a default member initializer or, if M is of class type X (or array thereof), X
is const-default-constructible,
if T is a union with at least one non-static data member, exactly one variant member has a default member initializer,
if T is not a union, for each anonymous unio...