将Vector作为参数传递给另一个类构造函数C ++

Question

I have been trying to pass a vector to another class constructor by using the following line: (the following line of code is in the Lexer.cpp class)

 Parser p(toks);

where, toks is a vector of type Token ( vector<Token> toks; ) , with Token being a struct within the Lexer.h class.

The constructor to which I would like to pass this vector is the following:

Parser::Parser(vector<Lexer::Token> toks){
    //do something
}

However, using Parser p(toks); to pass the vector is giving me an 'Instantiating an unknown structure without a reference' error. In what way should I pass this vector to the other class?

Answer 1

add a & symbo

Parser::Parser(vector<Lexer::Token> &toks){
//do something
}