From: Chris <chris@...>
Date: 2002-04-05T01:52:09+09:00
Subject: Re: Test the result of an initialization ?

In article <1fa4ola.1k42a53qwppdN%jayce@mosx.net>,
 jayce@mosx.net (Jayce Piel) wrote:

> Ok, that's what I mean for "catch"... I just want to say "a specific
> treatment for when an exception occurs".

Something like this?

irb(main):001:0> class MyFile
irb(main):001:0>    attr :name
irb(main):001:0>    attr :file
irb(main):002:1>    def initialize(name)
irb(main):003:2>       @name = name
irb(main):004:2>       begin                  
irb(main):005:3*          @file = File.open(name)
irb(main):006:3>       rescue
irb(main):007:3>          puts "#{name} is not a valid file."
irb(main):008:3>          @file = nil
irb(main):009:3>       end
irb(main):010:2>    end
irb(main):011:1> end
nil
irb(main):012:0> a = MyFile.new("hello")
hello is not a valid file.
#<MyFile:0x3dccb4  @file=nil, @name="hello">