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rawpatchinlineside by side (parent: 2ce2321)
rawpatchinlineside by side (parent: 2ce2321)
| author | Jun Hiroe <[email protected]> | |
| Mon, 24 Mar 2014 08:49:14 +0000 (24 17:49 +0900) | ||
| committer | Jun Hiroe <[email protected]> | |
| Mon, 24 Mar 2014 09:03:37 +0000 (24 18:03 +0900) |
| mrbgems/mruby-enum-ext/mrblib/enum.rb | patchblobblamehistory | |
| mrbgems/mruby-enum-ext/test/enum.rb | patchblobblamehistory |
self.each {|*val| block.call(val.__svalue, obj) }
obj
end
+
+ ##
+ # call-seq:
+ # enum.reverse_each { |item| block } -> enum
+ # enum.reverse_each -> an_enumerator
+ #
+ # Builds a temporary array and traverses that array in reverse order.
+ #
+ # If no block is given, an enumerator is returned instead.
+ #
+ # (1..3).reverse_each { |v| p v }
+ #
+ # produces:
+ #
+ # 3
+ # 2
+ # 1
+ #
+
+ def reverse_each(&block)
+ ary = []
+ self.each {|*val| ary.unshift(*val) }
+ ary.each {|*val| block.call(*val) }
+ self
+ end
end
assert_true [2, 4, 6, 8, 10, 12, 14, 16, 18, 20], (1..10).each_with_object([]) { |i, a| a << i*2 }
assert_raise(ArgumentError) { (1..10).each_with_object() { |i, a| a << i*2 } }
end
+
+assert("Enumerable#reverse_each") do
+ r = (1..3)
+ a = []
+ assert_equal (1..3), r.reverse_each { |v| a << v }
+ assert_equal [3, 2, 1], a
+end