Setfield.jl issues

`haslens` analog to`hasfield`

2

I didn't see an existing way to check whether `get(obj, l)` would return a value or throw any or all of `ERROR: type $obj has no field $f` `BoundsError` `ArgumentError:...

goretkin

Use JuliaFunctional/CompositionsBase.jl?

4

I created https://github.com/JuliaFunctional/CompositionsBase.jl so that packages dealing with morphisms can share symbols like `⨟`, `compose`, and `opcompose` (an ASCII alias of `⨟`). As we discussed in https://github.com/tkf/Transducers.jl/issues/67, my motivation is...

tkf

Modify array of immutables in place

3

If I have an array of immutable datastructures, it would be extremely advantageous from a performance perspective to be able to mutate that array in place instead of replacing it....

non-Jedi

WIP: Implement mutating versions of @set and @lens (#71)

31

colinxs

Camel case for package's name?

10

I don't how hard/annoying it is to change a package's name. But wouldn't it be more consistent with Julia to name the package "SetField" instead of "Setfield"? It is not...

favba

FunctionLens for SparseMatrixCSC accessor functions

4

Once `AbstractSparseMatrixCSC` API for accessors https://github.com/JuliaLang/julia/pull/33054 is settled, I'd like to add `set` definitions for them. It'll let us use something like ```julia @set nonzeros(A) = xs ``` The definition...

tkf

Set multiple lenses successively

3

For example, I have the following code: ```julia struct M c end struct N d end struct A a::M b::N end x = A(M(1), N(2)) lens1 = @lens _.a.c lens2...

singularitti

SettableRef object

3

It occurred to me this morning that with the new `setproperty!/getproperty` methods, it might be possible to do something like: ```julia o = SettableRef(some_immutable_object) o.f.x = 10 o.f.y = 23...

cstjean