On Tuesday, September 4, 2012 12:49:29 PM UTC+1, Jordon Bedwell wrote:
>
> I would personally write that method to be a little safer IMO. Yeah it's
> true that you can sometimes guarantee that problems won't happen but
> relying on that slim chance is bad, it's better to let file closing
> operations fall onto an ensure so that if something does go wrong then you
> can at least guarantee you aren't sloppy about it.
>
> def demo_tempfile
> file = Tempfile.new(["hello_world", ".rb"], "./lib/generators")
> file.write("$stdout.puts 'hello world'")
> file.rewind
> $stdout.puts file.read # Will output the source without evaling.
> # raise # Uncomment this line to see what I mean about ensure.
> ensure
> file.close!
> end
>
Or even
>
>
Tempfile.open(["hello_world", ".rb"], "./lib/generators") do |file|
#do stuff with file
end
which closes the file for you at the end of the block.
Fred
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