Comments on: Refactoring C# Series: Aggregation of IEnumerable http://www.richardbushnell.net/2008/03/02/refactoring-c-series-aggregation-of-ienumerable/ Thu, 29 Sep 2011 17:23:04 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: concerned citizen http://www.richardbushnell.net/2008/03/02/refactoring-c-series-aggregation-of-ienumerable/comment-page-1/#comment-104 concerned citizen Thu, 10 Dec 2009 16:20:40 +0000 http://richardbushnell.net/index.php/2008/03/02/refactoring-c-series-aggregation-of-ienumerable/#comment-104 Ruby has a more traditional 'reduce' method that can be used instead of the poorly named 'inject' method. Reduce is a bit more consistent with the names other languages use for similar constructs: Ruby: list = [1, 3, 5, 7] list.reduce(0) {|sum, n| sum + n } Python: import operator list = [1, 3, 5, 7] reduce(operator.add, list) Common Lisp: (let ((list '(1 3 5 7))) (reduce (lambda (sum n) (+ sum n)) list)) Of course you could also do this in Common Lisp: (let ((list '(1 3 5 7))) (apply #'+ list)) Move over C# ? Ruby has a more traditional ‘reduce’ method that can be used instead of the poorly named ‘inject’ method. Reduce is a bit more consistent with the names other languages use for similar constructs:

Ruby:
list = [1, 3, 5, 7]
list.reduce(0) {|sum, n| sum + n }

Python:
import operator
list = [1, 3, 5, 7]
reduce(operator.add, list)

Common Lisp:
(let ((list ‘(1 3 5 7)))
(reduce (lambda (sum n) (+ sum n)) list))

Of course you could also do this in Common Lisp:
(let ((list ‘(1 3 5 7)))
(apply #’+ list))

Move over C# ?

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