Use transient map in zipmap
Description
#'zipmap constructs a map without transients, where transients could improve performance.
Approach: Use a transient map internally, along with iterators for the keys and values. A persistent map is returned as before. The definition is also moved so that it resides below that of #'transient.
Performance:
(def xs (range 16384))
(def ys (range 16))
expression | 1.7.0-beta3 | +patch | |
|---|---|---|---|
(zipmap xs xs) | 4.50 ms | 2.12 ms | large map |
(zipmap ys ys) | 2.75 us | 2.07 us | small map |
Patch: CLJ-1005-zipmap-iterators.patch
Screened by: Alex Miller
Environment
None
Assignee
Unassigned
Reporter
Michał Marczyk
Labels
Approval
Vetted
Patch
Code
Affects versions
Priority
MajorConfigure