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Filename : permutation-i.ri
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U:RDoc::AnyMethod[iI"permutation:ETI"Array#permutation;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph;	[I";Iterates over permutations of the elements of +self+; ;TI"0the order of permutations is indeterminate.;To:RDoc::Markup::BlankLine�o;
;	[I"mWith a block and an in-range positive integer argument +count+ (<tt>0 < count <= self.size</tt>) given, ;TI"Fcalls the block with each permutation of +self+ of size +count+; ;TI"returns +self+:;T@o:RDoc::Markup::Verbatim;	[I"a = [0, 1, 2]
;TI"perms = []
;TI"1a.permutation(1) {|perm| perms.push(perm) }
;TI" perms # => [[0], [1], [2]]
;TI"
;TI"perms = []
;TI"1a.permutation(2) {|perm| perms.push(perm) }
;TI"Aperms # => [[0, 1], [0, 2], [1, 0], [1, 2], [2, 0], [2, 1]]
;TI"
;TI"perms = []
;TI"1a.permutation(3) {|perm| perms.push(perm) }
;TI"Sperms # => [[0, 1, 2], [0, 2, 1], [1, 0, 2], [1, 2, 0], [2, 0, 1], [2, 1, 0]]
;T:@format0o;
;	[I"GWhen +count+ is zero, calls the block once with a new empty array:;T@o;;	[I"perms = []
;TI"1a.permutation(0) {|perm| perms.push(perm) }
;TI"perms # => [[]]
;T;
0o;
;	[I"PWhen +count+ is out of range (negative or larger than <tt>self.size</tt>), ;TI"does not call the block:;T@o;;	[I"=a.permutation(-1) {|permutation| fail 'Cannot happen' }
;TI"<a.permutation(4) {|permutation| fail 'Cannot happen' }
;T;
0o;
;	[I"3With no block given, returns a new Enumerator.;T@o;
;	[I"LRelated: {Methods for Iterating}[rdoc-ref:Array@Methods+for+Iterating].;T:
@fileI"array.c;T:0@omit_headings_from_table_of_contents_below0I"rpermutation(count = self.size) {|permutation| ... } -> self
permutation(count = self.size) -> new_enumerator
;T0[�I"(*args);T@9FI"
Array;TcRDoc::NormalClass00