ruby code example(13)

ruby code example(13)

while gets
  if /Ruby/
    print
  end
end

##等同代码

 ARGF.each {|line|  print line  if line =~ /Ruby/ }
##ARGF
##An object providing access to virtual concatenation of files passed as command-line
##arguments or standard input if there are no command-line arguments. A synonym for
##$<.

##等同代码
print ARGF.grep(/Ruby/)