honbin · October 18, 2012 05:51
diff --git a/reduce_inject.rb b/reduce_inject.rb
 # reference url: http://jp.rubyist.net/magazine/?0038-MapAndCollect#l2
 #reduce for lisp
 # (reduce (lambda (i j) (+ i j)) '(3 4 5 6))
 #reduce for ruby
 p [3, 4, 5, 6].reduce {|i, j| i + j } #=>18

 #inject for smalltalk
 # #(3 4 5 6) inject: 0 into: [:i :j | i + j ]
 #inject for ruby
 p [3, 4, 5, 6].inject(0) {|i, j| i + j } #=>18
	# reference url: http://jp.rubyist.net/magazine/?0038-MapAndCollect#l2
	#reduce for lisp
	# (reduce (lambda (i j) (+ i j)) '(3 4 5 6))
	#reduce for ruby
	p [3, 4, 5, 6].reduce {\|i, j\| i + j } #=>18

	#inject for smalltalk
	# #(3 4 5 6) inject: 0 into: [:i :j \| i + j ]
	#inject for ruby
	p [3, 4, 5, 6].inject(0) {\|i, j\| i + j } #=>18