ClojureScript

Set literals in REPL end up reified as ArrayMap backed PersistentHashSets.

Details

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

Description

Entering a set literal in the REPL with more than 8 elements should create a PHM backed set but instead it is array backed.

Example (in REPL):
cljs.user=> (type (.-hash-map #{1 2 3 4 5 6 7 8 9}))
cljs.core/PersistentArrayMap

This means operations such as `get` and `contains?` end up doing long scans and are slower than a user would expect.

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Dates

  • Created:
    Updated: