There is often the question of whether to go for mutable types, like Array or BigInt, or for bitstypelike SVector or Int. The former demand careful management of temporaries, use of views and inplace operations; these are made much more convenient by dot-syntax. The latter are often significantly fa…

Perhaps I am missing something, but couldn’t you abstract the operations like nxt .|= ... into an interface like nxt = calculate_next!(nxt, g, i, visited) which then either updates nxt, or returns a new one, depending on the type? Similarly for other mutations. The rest of the code could be gene…

x-ref to Setfield.jl: Fix some tests and suppress warnings in Julia 0.7 by tkf · Pull Request #31 · jw3126/Setfield.jl · GitHub , https://github.com/jw3126/Setfield.jl/issues/32

[image] Tamas_Papp: but couldn’t you abstract the operations […] into an interface like nxt = calculate_next!(nxt, g, i, visited) But then, I would need to write two methods for calculate_next! and, even worse, write two methods for every single operation in the code. That seems worse than du…

Maybe this doesn’t apply to your example yet, but Julia has gotten much better at eliding heap allocations, and you can now do stuff like this without allocating: tkoolen/PlanarConvexHulls.jl/blob/master/src/hrep.jl#L21-L76 hrep(hull::ConvexHull) = _hrep(hull, Lengt…

So for StaticArrays, I have an operation like res = a + c * b, where c is a scalar and res, a, b are compatible <:AbstractArray. Then, I’d write res = zero(tmp_type(typeof(a))) to maybe allocate a temporary, and always write res .= a .+ c .* b in my code, with something like tmp_type(::Type{X{T,N}}…

Generic functions between mutability

General Usage

tkf February 21, 2019, 1:30am 7

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Generic functions between mutability

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