用于初始化vector的类的构造方法

Question

I want initialize a vector of vector of bool inside my costructor.

This is my class:

class MyClass{
public:
    MyClass(const OtherClass&g):
        g(g), count(g.node_count(), std::vector<bool>(16))){}


private:
    const OtherClass&g;
    std::vector<std::vector<bool>>count;
};

but when I try to initialize count I obtain this error:

error: no match for call to ‘(std::vector<std::vector<bool> >) (int)’

Answer 1

You want to use fill constructor . If you don't use c++ 11 you need to specify the default value for elements in the vector count(g.node_count(), std::vector<bool>(16, true))

Answer 2

First of all I want to ask if you know that vector<bool> is a special type of vector with a bit different implementation because of optimisation, which can cause a bit different behaviour in some cases.

If you want to use it, you must pass to constructor vector<bool>(16, true) filling it with 16 true values.