From: Robert Klemme <shortcutter@...>
Date: 2008-10-06T20:14:44+09:00
Subject: Re: open file for reading as non block

2008/10/5 Junkone <junkone1@gmail.com>:
> how do i open the file for reading as non blocking mode. as you can
> see the first 2 attempts do not work.
>
> irb(main):058:0> File.open(fi,File::NONBLOCK + File::RDONLY){|f|
> c=f.read}
> IOError: not opened for reading
>        from (irb):58:in `read'
>        from (irb):58
>        from (irb):58:in `open'
>        from (irb):58
>        from ¢¾:0

Works for me:

irb(main):006:0> File.open("environment", File::RDONLY |
File::NONBLOCK) {|io| io.read}.size
=> 4398

IMHO "|" is better than "+" because it expresses more clearly that
this is about bit masks.

Btw, what do you expect from opening a file nonblocking?  Is there any
other process writing to it?

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end