[CLJS-262] vector-seq optimizations introduced un-conj-able sequence

Fri, 18 May 2012 21:58:28 -0500

Due to changes introduced in commit ddd7fa3d960b0fe32083d3cb35ff064e968d53c4 "attempting to optimize seq on vectors" the following code will fail with the an error:

(conj (rest [1 2]) 4)

The error is "No protocol method ICollection.-conj defined for type object: [object Object]" and the object in question is the reify result returned by vector-seq.

Clojure JIRA

[CLJS-262] vector-seq optimizations introduced un-conj-able sequence