From: 7stud -- <dolgun@...>
Date: 2007-09-19T06:16:37+09:00
Subject: Re: removing newline from eachline in file

Chuck Dawit wrote:
> Also if the url doesn't work/exist
> I don't want the script to crash I want to keep moving through the file
> its reading.
> 
> begin
>     while (line = f.readline)
>         line = line  =~ /(.*?)\n/
>         url = "www." + line + ".net"
> 
>         open(url) { |page| page_content = page.read()
>     puts "link exists"
>   }
>     end
> rescue
> puts "link does not exist"
> 
> rescue EOFError
>     f.close
> end

If your program is currently crashing on bad urls, you just need to put 
the begin/rescue around the open statement---not outside your loop. 
Something like this(untested):

begin
    while (line = f.readline)
        line = line  =~ /(.*?)\n/
        url = "www." + line + ".net"

        begin
               open(url) { |page| page_content = page.read() }
               puts "link exists"
        rescue Exception
               puts "in rescue"
               #do nothing -- when you catch an exception the exception 
goes away

        puts "execution continues on its way"
    end
end

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