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

block_params: (o)
comment: 
- !ruby/struct:SM::Flow::P 
  body: Equivalent to Set#delete_if, but returns nil if no changes were made.
full_name: Set#reject!
is_singleton: false
name: reject!
params: () {|o| ...}
visibility: public
