[#CLJ-1160] reducers/mapcat ignores Reduced

[CLJ-1160] reducers/mapcat ignores Reduced Created: 11/Feb/13 Updated: 01/Mar/13
Status:	Open
Project:	Clojure
Component/s:	None
Affects Version/s:	Release 1.5
Fix Version/s:	Release 1.6

Type:

Defect

Priority:

Major

Reporter:

Christophe Grand

Assignee:

Christophe Grand

Resolution:

Unresolved

Votes:

Labels:

None

Attachments:

lazy-rmapcat.diff

Patch:

Code and Test

Description

The following code throws an exception:

(->> (concat (range 100) (lazy-seq (throw (Exception. "Too eager"))))
(r/mapcat (juxt inc str))
(r/take 5)
(into []))

This is because r/mapcat introduces an intermediate reduce which swallows the reduced value coming from r/take.

Generated at Sat May 25 19:35:07 CDT 2013 using JIRA 4.4#649-r158309.