foldable-seq.diff
[CLJ-1197] Allow fold to parallelize over lazy sequences Created: 10/Apr/13 Updated: 05/Jun/15 Resolved: 27/Sep/13 |
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| Status: | Closed |
| Project: | Clojure |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Enhancement | Priority: | Major |
| Reporter: | Paul Butcher | Assignee: | Unassigned |
| Resolution: | Declined | Votes: | 0 |
| Labels: | reducers | ||
| Attachments: |
foldable-seq.diff
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| Patch: | Code |
| Description |
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This patch implements foldable-seq, which allows fold to parallelize over a lazy sequence. See this conversation on the Clojure mailing list: https://groups.google.com/forum/#!msg/clojure/8RKCjF00ukQ/b5mmmOB5Uh4J The patch is code only, sadly. No tests because I've not been able to find any existing tests for fold: https://groups.google.com/d/msg/clojure-dev/plQ16L1_FC0/CIyMVIgSZkkJ However, I have tested it in a separate project successfully. |
| Comments |
| Comment by Stuart Halloway [ 27/Sep/13 3:12 PM ] |
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Hi Paul, Seqs are fundamentally not foldable. That said, what you seem to be trying to do (partition a seq into foldable subjobs) is straightforward in Clojure, see That said, if the input is truly arriving sequentially, pmap or some variant may do as well or better, e.g. |
| Comment by Nicola Mometto [ 05/Jun/15 9:55 AM ] |
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Ticket was declined and marked as resolved but not closed. I'm closing it. |