Exception: StandardError
Relationships & Source Files | |
Extension / Inclusion / Inheritance Descendants | |
Subclasses:
ArgumentError, ClosedQueueError, EOFError, EncodingError, FiberError, FloatDomainError, IOError, IndexError, KeyError, LocalJumpError, NameError, NoMethodError, RangeError, RegexpError, RuntimeError, StopIteration, SystemCallError, ThreadError, TypeError, UncaughtThrowError, ZeroDivisionError, Encoding::CompatibilityError, Encoding::ConverterNotFoundError, Encoding::InvalidByteSequenceError, Encoding::UndefinedConversionError, Math::DomainError
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Super Chains via Extension / Inclusion / Inheritance | |
Class Chain:
self,
::Exception
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Instance Chain:
self,
::Exception
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Inherits: | Exception |
Defined in: | error.c |
Overview
The most standard error types are subclasses of StandardError
. A rescue clause without an explicit ::Exception class will rescue all StandardErrors (and only those).
def foo
raise "Oups"
end
foo rescue "Hello" #=> "Hello"
On the other hand:
require 'does/not/exist' rescue "Hi"
raises the exception:
LoadError: no such file to load -- does/not/exist
Class Method Summary
::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
::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
This class inherits a constructor from Exception