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

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Returns the index of the first occurrence of the given <em>substring</em>, character (<em>fixnum</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:SM::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(101)             #=&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(fixnum [, offset])      => fixnum or nil
  str.index(regexp [, offset])      => fixnum or nil

visibility: public