I\'m making a program that requires an interface to draw in a 20x20 monochrome grid, then \"dump\" that grid to a boolean vector.
In C++, is there a Vector2 class and if so, what do I need to include to use it? I want to use this to store 2-dimensional vectors such as position or velocity of开发者_运维百科 a particle.Here you g
I have program that currently use typecast for a null-pointer vector开发者_JS百科 according to the following:
STL vector\'s capacity doubles for no (apparent) reason. I create a vector with an initial size of 1000, insert one item. I would expect the capacity to remain 1000.
I was trying to create a vector of lambda, but failed: auto ignore = [&]() { return 10; };//1 std::vector<decltype(ignore)> v;//2
The code below is generating a segementation fault, and I do no开发者_如何学Ct understand why. The code below uses a vector to store multiple large strucutres, but the code does not run and generates
I am currently really stuck on how to solve the following problem: struct node { int a; node* b; } I will have two root nodes without parents and then to more nodes pointing to their parents
Does R have shorthand, function or operator开发者_开发百科 which I can use to easily generate the following vector?
It's difficult to tell what is b开发者_运维百科eing asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form.
using namespace std; vector<vector<T> > vec_collection(3); vec_collection[0]=vector<T>(12);
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