alaisi/postgres.async — pull request #3 by moea (2014-10-23 01:36:01+00:00)
Title: Single-value channel results

Further to #2, this uses a single channel value, either a success or failure, instead of a vector of [success failure]. The "failure" predicate is `(instance? Throwable)`.

The only real opportunity for creativity was in how `dosql` ought to work. I thought it would be awkward to shoehorn the previous implementation into working with the single-result approach. I'm obviously more than happy to make whatever changes.