Exception: IndexError

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses: ClosedQueueError, KeyError, StopIteration, Ractor::ClosedError
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `::StandardError`, `::Exception`
Instance Chain: self, `::StandardError`, `::Exception`
Inherits:	StandardError `::Object` Exception StandardError IndexError
Defined in:	error.c, error.c

Overview

Raised when the given index is invalid.

a = [:foo, :bar]
a.fetch(0)   #=> :foo
a[4]         #=> nil
a.fetch(4)   #=> IndexError: index 4 outside of array bounds: -2...2

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

.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.

#==	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`:

This class inherits a constructor from Exception