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Exception: ArgumentError

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
Instance Chain:
Inherits: StandardError
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

Class Attribute Summary

::Exception - Inherited

.to_tty?

Returns true if exception messages will be sent to a terminal device.

Class Method Summary

::Exception - Inherited

.exception

Returns an exception object of the same class as self; useful for creating a similar exception, but with a different message.

.new

Returns a new exception object.

Instance Method Summary

::Exception - Inherited

#==

Returns whether object is the same class as self and its #message and #backtrace are equal to those of self.

#backtrace

Returns a backtrace value for self; the returned value depends on the form of the stored backtrace value:

#backtrace_locations

Returns a backtrace value for self; the returned value depends on the form of the stored backtrace value:

#cause

Returns the previous value of global variable $!, which may be nil (see Global Variables):

#detailed_message

Returns the message string with enhancements:

#exception

Returns an exception object of the same class as self; useful for creating a similar exception, but with a different message.

#full_message

Returns an enhanced message string:

#inspect

Returns a string representation of self:

#message

Returns #to_s.

#set_backtrace

Sets the backtrace value for self; returns the given +value:

#to_s

Returns a string representation of self:

Constructor Details

This class inherits a constructor from Exception