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

block_params: 
comment: 
- !ruby/struct:RDoc::Markup::Flow::P 
  :body: "Modifies <em>str</em> by converting the first character to uppercase and the remainder to lowercase. Returns <tt>nil</tt> if no changes are made. Note: case conversion is effective only in ASCII region."
- !ruby/struct:RDoc::Markup::Flow::VERB 
  :body: "   a = &quot;hello&quot;\n   a.capitalize!   #=&gt; &quot;Hello&quot;\n   a               #=&gt; &quot;Hello&quot;\n   a.capitalize!   #=&gt; nil\n"
full_name: String#capitalize!
is_singleton: false
name: capitalize!
params: |
  str.capitalize!   => str or nil

visibility: public
