Enable destructuring of sequency maps

Description

At present, Clojure's destructuring implementation will create a hash-map from any encountered value satisfying clojure.core/seq? This has the I argue undesirable side effect of making it impossible to employ destructuring on a custom Associative type which is also a Seq. This came up when trying to destructure instances of a tagged value class which for the purpose of pattern matching behave as [k v] seqs, but since the v is known to be a map, are also associative on the map part so as to avoid the syntactic overhead of updates preserving the tag.

So using such a thing,

Since for any type T such that clojure.core/get will behave, T should satisfy clojure.core/map? it should be correct simply to change the behavior of destructure to only build a hash-map if map? isn't already satisfied.

The attached patch makes this change.

Environment

None

Status

Assignee

Unassigned

Reporter

Reid D McKenzie

Labels

Approval

Triaged

Patch

Code

Priority

Minor
Configure