I defined a struct as follows: struct inverse{T<:Number} x::Array{T} y::Array{T} function inverse{T}(x0::Tuple{...,T,...}) where T<:Number x = convert_to_x(x0) y = inv(x) new(promote(x,y)...) end end where the constructor is incomplete. The idea is that y=inv(x), both are square matrices with the …

Does it have to be an inner constructor? If not, there is no problem, I think. function inverse(x0) x = [...] y = [...] inverse(promote(x,y)...) end

Thanks. I had problems with outer constructor. It looks like if this struct is nested in another struct as a field, only the inner constructor is called when the nesting struct is created, in which case I get an error complaining “no matching method for blah blah …” even though that particular metho…

This is mostly unrelated to your question, but you want Matrix{T} not Array{T}

Why do you want this? I’m very curious to hear a good reason for a numerical matrix inverse. [image] Non-allocating matrix inversion Performance using LinearAlgebra, BenchmarkTools, BenchmarkPlots, StatsPlots bg = BenchmarkGroup() bg[:inv] = @benchmarkable A*inv(B)*b setu…

You are right. Mostly we don’t want to explicitly compute matrix inverse. My situation is that those are 2x2 SMatrix which are used frequently. It makes the code look cleaner w/o much affecting performance.

Int / Float type inference in constructor

General Usage

gustaphe June 4, 2021, 5:06pm 5

Why do you want this? I’m very curious to hear a good reason for a numerical matrix inverse.

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Int / Float type inference in constructor

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