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

block_params: 
comment: 
- !ruby/struct:RDoc::Markup::Flow::P 
  :body: Returns the index of the first occurrence of the given <em>substring</em> or pattern (<em>regexp</em>) in <em>str</em>. Returns <tt>nil</tt> if not found. If the second parameter is present, it specifies the position in the string to begin the search.
- !ruby/struct:RDoc::Markup::Flow::VERB 
  :body: "   &quot;hello&quot;.index('e')             #=&gt; 1\n   &quot;hello&quot;.index('lo')            #=&gt; 3\n   &quot;hello&quot;.index('a')             #=&gt; nil\n   &quot;hello&quot;.index(?e)              #=&gt; 1\n   &quot;hello&quot;.index(/[aeiou]/, -3)   #=&gt; 4\n"
full_name: String#index
is_singleton: false
name: index
params: |
  str.index(substring [, offset])   => fixnum or nil
  str.index(regexp [, offset])      => fixnum or nil

visibility: public
