I have a c++ map where the value type is a bool. I need to see if a key exists in the map, and if it doesn't, return false. This is my code right now:
try {
return board.at[{x, y}];
}
catch (const std::out_of_range& oor) {
return false;
}
I don't want to use the [] operator because that will initialize the value if it doesn't exist. Is there any way to see if the value exists in the map without a try block?
You can use
std::map::findwhich will return an iterator the element if found, or.endif not found.my_map.count({x, y})is the idiomatic way, and has the advantage of the implicitboolconversion.