pub fn is_by_value_unop(u: UnOp) -> bool {
    match u {
        UnNeg | UnNot => true,
        _ => false,
    }
}
/// Returns `true` if the unary operator takes its argument by value
Returns `true` if the unary operator takes its argument by value
Returns ` true ` if the unary operator takes its argument by value
pub fn is_by_value_unop(u: UnOp) -> bool {
    match u {
        UnNeg | UnNot => true,
        _ => false,
    }
}
pub fn is_by_value_unop ( u : UnOp ) -> bool { match u { UnNeg | UnNot => true , _ => false , } }
Returns `true` if the unary operator takes its argument by value
Returns ` true ` if the unary operator takes its argument by value
u
UnOp
u
UnOp