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improve the inferrability of isequal(::Any, ::Any) #42195

Merged
merged 1 commit into from
Sep 11, 2021
Merged

improve the inferrability of isequal(::Any, ::Any) #42195

merged 1 commit into from
Sep 11, 2021

Commits on Sep 10, 2021

  1. improve the inferrability of isequal(::Any, ::Any) 

    Currently, the return type of `isequal(::Any, ::Any)` is inferred as
`Union{Bool,Missing}` because it takes the possibilities of e.g.
`==(::Any, ::Missing)` into account.
But actually `isequal` already handles every `missing` case by dispatch:
<https://github.com/JuliaLang/julia/blob/2f00c5f6e2211ed1588976dbbe7b022148716d95/base/missing.jl#L80-L82>
, and thus we can improve the inferrability by type annotation.
    @aviatesk
    aviatesk committed Sep 10, 2021
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