Arc Suggestion

It would be nice if [] would act as a currying function if _ isn't present.

For instance:

(map [+ 10 _] '(1 2 3))

could be rewritten as:

(map [+ 10] '(1 2 3))

Or, taken directly from the tutorial:

arc> (trues [if (odd _) (+ _ 10)] '(1 2 3 4 5))

could be rewritten as:

(trues [if [odd] [+ 10]] '(1 2 3 4 5))

which is arguably simpler and clearer.

And by the way, _ could also be usable as before such as:

(filter [> _ 10] (range 1 100)).