withMeta() should return identity when new meta is identical to prior

Description

For persistent objects, if meta is identical, should return the identical object rather than replacing meta and returning a new object.

This is implemented in some but certainly not all of the withMeta() impls.

Patch: clj-2362-2.patch (this patch has whitespace warnings due to retaining the CR style in files like PersistentQueue.java)

Screened by: Stu H

Environment

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Activity

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Alex Miller
June 22, 2018, 3:49 PM

Updated to include PersistentHashMap and AFunction.

Completed

Assignee

Unassigned

Reporter

Alex Miller

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Approval

Ok

Patch

Code

Fix versions

Affects versions

Priority

Major