class Suduko
{
private:
vector<vector<string>> board;
public:
Suduko() : board(9, vector<string>(9, ".")) {}
}
Is this the only way to do it?
I've tried initializing it right where board is defined with vector<vector<string>> board(9, vector<string>(9, "."));
but that doesnt work.
I also tried:
Suduko()
{
board(9, vector<string>(9, "."));
}
and
Suduko()
{
board = board(9, vector<string>(9, "."));
}
inside of the constructor and those didn't work either. So am I limited to initializing the vector to the way I did in the first example (which did work)? Or is there another way I can do it?
Here are listed some ways to initialize the vector
class Suduko
{
private:
std::vector<std::vector<std::string>> board { 9, std::vector<std::string>( 9, "." ) };
//.....
};
class Suduko
{
private:
std::vector<std::vector<std::string>> board =
std::vector<std::vector<std::string>>( 9, std::vector<std::string>( 9, "." ) );
//.....
};
class Suduko
{
private:
std::vector<std::vector<std::string>> board;
public:
Suduko() : board( 9, std::vector<std::string> (9, "." ) )
{
}
};
class Suduko
{
private:
std::vector<std::vector<std::string>> board;
public:
Suduko() : board{ 9, std::vector<std::string> (9, "." ) }
{
}
};
class Suduko
{
private:
std::vector<std::vector<std::string>> board;
public:
Suduko()
{
board.assign( 9, std::vector<std::string> (9, "." ) );
}
};
To get your other attempts to work, you must use:
board = vector<vector<string>>(9, vector<string>(9, "."));
You can also use:
board.resize(9);
for (auto& v : board)
{
v.resize(9, ".");
}
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