This is what I put together in https://github.com/JuliaLang/julia/pull/28161 (closed PR). I thought it could perhaps live here. Note that a WeakKeyIdDict might go into Base sometime in 1.x: https://github.com/JuliaLang/julia/pull/28182, but who knows when.

Jul 20 '18 14:07 mauro3

Codecov Report

Merging #402 into master will decrease coverage by 0.08%. The diff coverage is 95.45%.

@@            Coverage Diff             @@
##           master     #402      +/-   ##
==========================================
- Coverage   98.65%   98.57%   -0.09%     
==========================================
  Files          30       31       +1     
  Lines        1716     1760      +44     
==========================================
+ Hits         1693     1735      +42     
- Misses         23       25       +2

Impacted Files	Coverage Δ
src/weakkeyid_dict.jl	`95.45% <95.45%> (ø)`

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Jul 20 '18 14:07 codecov[bot]

Is there any interest in this? Otherwise please close.

Sep 24 '18 11:09 mauro3

Any news?

Nov 02 '22 15:11 thautwarm

After the great recent interest in this PR (two people in two month! ;-), I updated it such that it passes again tests and fixed conflicts. Ready to go, as far as I'm concerned.

Dec 21 '22 10:12 mauro3

Thanks. This is quite useful!

Dec 21 '22 17:12 thautwarm

Per https://github.com/JuliaCollections/DataStructures.jl/issues/479 we are not accepting new data structures til post-1.0.0

I guess a case could be made that this PR was open long before then and so should be an exception?

Mar 13 '23 04:03 oxinabox

+1 for an exception, since I want to use this too :). Or maybe it can be it's own small package?

Jul 16 '23 01:07 ericphanson

Implemented WeakKeyIdDict

Codecov Report