Exception: ArgumentError

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses: UncaughtThrowError
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, ::StandardError, ::Exception
Instance Chain: self, ::StandardError, ::Exception
Inherits:	StandardError ::Object Exception StandardError ArgumentError
Defined in:	error.c, error.c

Overview

Raised when the arguments are wrong and there isn't a more specific ::Exception class.

Ex: passing the wrong number of arguments

[1, 2, 3].first(4, 5)

raises the exception:

ArgumentError: wrong number of arguments (given 2, expected 1)

Ex: passing an argument that is not acceptable:

[1, 2, 3].first(-4)

raises the exception:

ArgumentError: negative array size

.exception	With no argument, or if the argument is the same as the receiver, return the receiver.
.new	Construct a new ::Exception object, optionally passing in a message.

#==	Equality—If obj is not an ::Exception, returns `false`.
#backtrace	Returns any backtrace associated with the exception.
#backtrace_locations	Returns any backtrace associated with the exception.
#cause	Returns the previous exception ($!) at the time this exception was raised.
#exception	With no argument, or if the argument is the same as the receiver, return the receiver.
#inspect	Return this exception's class name and message.
#message	Returns the result of invoking `exception.to_s`.
#set_backtrace	Sets the backtrace information associated with `exc`.
#to_s	Returns exception's message (or the name of the exception if no message is set).

This class inherits a constructor from Exception