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Comment by shawndumas | Hacker News Reader

Do you mean like this?

  var sum = function (a) {
      return _(a).reduce(function (m, n) {
          return m + n;
      }, 0);
  };

  sum([1,2,3,4,5,6,7,8,9]); // => 45

Or am I not getting you?

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That's one way to do it, but you're falling back to explicitly defining a new function, rather than creating it by combining higher-order functions. Which kinda defeats the point.

All I would have to do is abstract the outer function out and call it curry (partial[1], really).

  var add = function (m, n) {
          return m + n;
      },
      partial = function (mth, fn) {
          return function (l) { return _(l)[mth](fn, 0); };
      },
      sum = partial('reduce', add);

  sum([1,2,3,4,5,6,7,8,9]); // => 45

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[1]: http://lambda-the-ultimate.org/node/2266

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