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ruby / usr / share / ri / 2.2.0 / system / Exception / cdesc-Exception.ri
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U:RDoc::NormalClass[iI"Exception:ET@I"Object;To:RDoc::Markup::Document:@parts[o;;[o:RDoc::Markup::Paragraph;[I"DDescendants of class Exception are used to communicate between ;TI"PKernel#raise and +rescue+ statements in <code>begin ... end</code> blocks. ;TI"NException objects carry information about the exception -- its type (the ;TI"Kexception's class name), an optional descriptive string, and optional ;TI"Etraceback information.  Exception subclasses may add additional ;TI"%information like NameError#name.;To:RDoc::Markup::BlankLineo;	;[I"NPrograms may make subclasses of Exception, typically of StandardError or ;TI"MRuntimeError, to provide custom classes and add additional information. ;TI"GSee the subclass list below for defaults for +raise+ and +rescue+.;T@o;	;[	I"IWhen an exception has been raised but not yet handled (in +rescue+, ;TI"O+ensure+, +at_exit+ and +END+ blocks) the global variable <code>$!</code> ;TI"Iwill contain the current exception and <code>$@</code> contains the ;TI"#current exception's backtrace.;T@o;	;[
I"PIt is recommended that a library should have one subclass of StandardError ;TI"Nor RuntimeError and have specific exception types inherit from it.  This ;TI"Pallows the user to rescue a generic exception type to catch all exceptions ;TI"Jthe library may raise even if future versions of the library add new ;TI"exception subclasses.;T@o;	;[I"For example:;T@o:RDoc::Markup::Verbatim;[I"class MyLibrary
;TI""  class Error < RuntimeError
;TI"  end
;TI"
;TI"!  class WidgetError < Error
;TI"  end
;TI"
;TI"  class FrobError < Error
;TI"  end
;TI"
;TI"	end
;T:@format0o;	;[I"JTo handle both WidgetError and FrobError the library user can rescue ;TI"MyLibrary::Error.;T@o;	;[I".The built-in subclasses of Exception are:;T@o:RDoc::Markup::List:
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;;;[o;;0;[o;	;[I"
Errno::*;To;;0;[o;	;[I"ThreadError;To;;0;[o;	;[I"TypeError;To;;0;[o;	;[I"ZeroDivisionError;To;;0;[o;	;[I"SystemExit;To;;0;[o;	;[I"SystemStackError;To;;0;[o;	;[I""fatal -- impossible to rescue;T:
@fileI"error.c;T:0@omit_headings_from_table_of_contents_below0o;;[o;	;[I",Exception serialization/deserialization;T;I"'ext/json/lib/json/add/exception.rb;T;0;0;0[[[[[I"
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cause;T@[I"exception;T@[I"inspect;T@[I"message;T@[I"set_backtrace;T@[I"to_json;F@[I"	to_s;T@[;[[;[[[U:RDoc::Context::Section[i0o;;[;0;0[@ó@ù@ùcRDoc::TopLevel