Exception: KeyError

Inherits:
IndexError show all
Defined in:
error.c,
error.c

Overview

Raised when the specified key is not found. It is a subclass of IndexError.

h = {"foo" => :bar}
h.fetch("foo") #=> :bar
h.fetch("baz") #=> KeyError: key not found: "baz"

Method Summary

Methods inherited from Exception

#==, #backtrace, #backtrace_locations, #cause, exception, #exception, #initialize, #inspect, #message, #set_backtrace, #to_s

Constructor Details

This class inherits a constructor from Exception