Adding a convert(::Type{T}, ...) where {T} is a source of a large number of invalidations

[invenia]

Adding a convert(::Type{T}, ...) where {T} is a source of a large number of invalidations

[omus]

I've been making some PRs to Julia to use more specific function calls which avoids triggering invalidations in base when using Intervals.jl. These changes won't address invalidations that occur with including other packages but fixing the Base invalidations should still help. So far I've managed to address the +, - and isless invalidations Intervals.jl triggers.

[simeonschaub]

This would be good to fix before Julia 1.8 is released, since JuliaLang/julia#43671 will add a convert(Any, x) step for any assignment to a global, therefore adding a bunch more invalidation risks for this method.

[omus]

An attempt to address this: #143

[KristofferC]

Thanks, hadn't seen that one.

[oxinabox]

I wonder if this shouldn't actually be an overload of Base.only.
We are converting a interval that contains exactly 1 point to be exactly just that point.
It feels weird to me to be able to use an interval with 1 element where you can use the element.
e.g. push(::Vector{T}, ::AnchoredInterval{T}) doesn't seem like it should ever work.
but i think it does because of this convert

Do we actually use this method anywhere in practice?

[pabloferz]

@oxinabox see #145