--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Equivalent to <tt>$_.sub!(<em>args</em>)</tt>.
full_name: Kernel#sub!
is_singleton: false
name: sub!
params: |
  sub!(pattern, replacement)    => $_ or nil
  sub!(pattern) {|...| block }  => $_ or nil

visibility: public
