core.async

• Type: Defect
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: None
• Fix Version/s: None
• Component/s: None
• Labels:

  None
• Environment:

  core.async 0.1.338.0-5c5012-alpha

I have the following piece of ClojureScript code within a go block:

(cond
(and (vector? x) (= (first x) :some-key)) ...)

This generates the following piece of JavaScript code for the cond case:

if (40 === f) { return d = b[9], f = cljs.core.vector_QMARK_.call(null, d), d = cljs.core.first.call(null, d), d = cljs.core._EQ_.call(null, d, new cljs.core.Keyword(null, "some-key", "some-key", -978969032)), cljs.core.truth_(f && d) ? b[1] = 42 : b[1] = 43, new cljs.core.Keyword(null, "recur", "recur", -437573268); }

This looks to me like both and arguments would actually get evaluated. As a result my code crashes whenever it hits this cond case and 'x' is not seqable.

• Assignee:

  Unassigned

  Reporter:

  Jan Krueger

• Created:

  14/Sep/14 7:08 AM

  Updated:

  14/Sep/18 10:16 AM