[ruby-talk:02105] Re: ARGF or $<

Hi.

Hugh Sasse Staff Elec Eng <[e-mail]> wrote

| Has anyone any examples of how to use ARGF or $< as I cannot find much
| in the docs?  Thank you,

Have you read next page ?  I can find them.

http://www.ruby-lang.org/en/man-1.4/variable.html#lt
http://www.ruby-lang.org/en/man-1.4/variable.html#argf

## In fact, I read in japanese. 
##   http://www.ruby-lang.org/ja/*
##   http://www.ruby-lang.org/ja/yasugi.pdf

#
# cat.rb
#
# ruby cat.rb   file(s)
#
for line in ARGF
  print line
end

#
# grep.rb
#
# ruby grep.rb  re  file(s)
#
re = Regexp.compile(ARGV.shift)
for line in ARGF
  print line  if re =~ line
end

--
  ARIMA Yasuhiro <[e-mail]>