if the specified condition is true then perform the specified action
None
on is a conditional without an else-part. It is therefor performed only for the side-effects of the action.
std::on_no | |
std::if | classic if; can be used as a function or a procedure |
std::if_not | can be used as a function or a procedure |
std_types::false | does not perform the specified action |
std_types::true | performs the specified action |