U:RDoc::AnyMethod[iI"
index:ETI"Array#index;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph;	[I"NReturns the _index_ of the first object in +ary+ such that the object is ;TI"<code>==</code> to +obj+.;To:RDoc::Markup::BlankLineo;
;	[I"LIf a block is given instead of an argument, returns the _index_ of the ;TI"Kfirst object for which the block returns +true+.  Returns +nil+ if no ;TI"match is found.;T@o;
;	[I"See also Array#rindex.;T@o;
;	[I"HAn Enumerator is returned if neither a block nor argument is given.;T@o:RDoc::Markup::Verbatim;	[	I"a = [ "a", "b", "c" ]
;TI"%a.index("b")              #=> 1
;TI"'a.index("z")              #=> nil
;TI"$a.index {|x| x == "b"}    #=> 1;T:@format0:
@fileI"array.c;T:0@omit_headings_from_table_of_contents_below0I"
}ary.index(obj)             ->  int or nil
ary.index {|item| block}   ->  int or nil
ary.index                  ->  Enumerator;T0[I"(*args);T@!FI"
Array;TcRDoc::NormalClass00