You've detected that the integer value of argument x passed to the current function is invalid. Write the idiomatic way to abort the function execution and signal the problem.
throw domain_error("oops!");
throw new ArgumentException(nameof(×));
import std.format;
throw new Exception("invalid value for x (%s) in '%s'".format(x, __PRETTY_FUNCTION__));
void foo(int x) in { assert(x != 0, "wrong value for x"); } body { // function }
error(badarg).
return nil, fmt.Errorf("invalid value for x: %v", x)
throw new IllegalArgumentException("Invalid value for x: $x")
sqrt' :: Int -> Either String Int sqrt' x | x < 0 = Left "Invalid argument" sqrt' x = Right (sqrt x)
throw new Error ('x is invalid')
throw new IllegalArgumentException("Invalid value for x:" + x);
return nil, "Invalid argument x"
throw new \InvalidArgumentException($x . ' is invalid.');
Uses sysutils, math;
Raise EInvalidArgument.CreatFmt('Invalid value: %d',[x]);
die "Invalid argument $x";
raise ValueError("x is invalid")
raise ArgumentError, "invalid value #{x}."
enum CustomError { InvalidAnswer } fn do_stuff(x: i32) -> Result<i32, CustomError> { if x != 42 { Err(CustomError::InvalidAnswer) } else { Ok(x) } }
No security, no password. Other people might choose the same nickname.