chop!    → $_ or nil

Equivalent to $_.chop!.

a  = "now\r\n"
$_ = a
chop!   #=> "now"
chop!   #=> "no"
chop!   #=> "n"
chop!   #=> ""
chop!   #=> nil
$_      #=> ""
a       #=> ""

Source Code

/*
*  call-seq:
*     chop!    => $_ or nil
*  
*  Equivalent to <code>$_.chop!</code>.
*     
*     a  = "now\r\n"
*     $_ = a
*     chop!   #=> "now"
*     chop!   #=> "no"
*     chop!   #=> "n"
*     chop!   #=> ""
*     chop!   #=> nil
*     $_      #=> ""
*     a       #=> ""
*/

static VALUE
rb_f_chop_bang(str)
   VALUE str;
{
   return rb_str_chop_bang(uscore_get());
}