Extensions for Array
a = [1, 2, 3] a.put_after(2, 4) a # => [1, 2, 4, 3]
# File lib/ramaze/snippets/array/put_within.rb, line 22 def put_after(element, object) return self[index(element) + 1, 0] = object if include?(element) raise ArgumentError, "The given element doesn't exist" end
a = [1, 2, 3] a.put_before(2, 4) a # => [1, 4, 2, 3]
# File lib/ramaze/snippets/array/put_within.rb, line 31 def put_before(element, object) return self[rindex(element), 0] = object if include?(element) raise ArgumentError, "The given element doesn't exist" end
a = [1, 2, 3] a.put_within(4, :after => 2, :before => 3) a # => [1, 2, 4, 3]
# File lib/ramaze/snippets/array/put_within.rb, line 11 def put_within(object, constrain) pre, post = constrain.values_at(:after, :before) return put_after(pre, object) if rindex(post) - index(pre) == 1 raise ArgumentError, "Too many elements within constrain" end
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