Exception: NameError
Relationships & Source Files | |
Extension / Inclusion / Inheritance Descendants | |
Subclasses:
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Super Chains via Extension / Inclusion / Inheritance | |
Class Chain:
self,
::StandardError,
::Exception
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Instance Chain:
self,
::StandardError,
::Exception
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Inherits: |
StandardError
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Defined in: | error.c, error.c |
Overview
Raised when a given name is invalid or undefined.
puts foo
raises the exception:
NameError: undefined local variable or method `foo' for main:Object
Since constant names must start with a capital:
Fixnum.const_set :answer, 42
raises the exception:
NameError: wrong constant name answer
Class Method Summary
-
.new(msg [, name]) ⇒ name_error
constructor
Construct a new
NameError
exception.
::Exception - Inherited
.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. |
Instance Method Summary
-
#local_variables ⇒ Array
Return a list of the local variable names defined where this
NameError
exception was raised. -
#name ⇒ String?
Return the name associated with this
NameError
exception. -
#receiver ⇒ Object
Return the receiver associated with this
NameError
exception.
::Exception - Inherited
#== | Equality—If obj is not an ::Exception, returns |
#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 |
#set_backtrace | Sets the backtrace information associated with |
#to_s | Returns exception's message (or the name of the exception if no message is set). |
Constructor Details
.new(msg [, name]) ⇒ name_error
Construct a new NameError
exception. If given the name parameter may subsequently be examined using the #name method.
Instance Method Details
#local_variables ⇒ Array
Return a list of the local variable names defined where this NameError
exception was raised.
Internal use only.
#name ⇒ String?
Return the name associated with this NameError
exception.
#receiver ⇒ Object
Return the receiver associated with this NameError
exception.