Hello all, I actually fixed the problem by adding type specifications to all function calls and immutable types involved. Maybe this was also fixed in Julia 0.4 in the time being, but I was not able to follow as I follow the recommendation of developing all my package code in 0.3 and just testing it in 0.4.
I’m sorry for not having notified the list as I got it sorted out, but since I got no replies in 5 days I thought I was just being silly and the solution was somehow obvious (instead of it being a bug in call overloading). Best, João > On Nov 14, 2014, at 7:03 AM, Stefan Karpinski <[email protected]> wrote: > > I'm not sure but it's quite possible that this was fixed independently of > this email. Jeff has been doing most of the work on call overloading and he > doesn't (afaik) read julia-users very often. Sorry that you wasted time on > that and thanks for looking into this. > > On Fri, Nov 14, 2014 at 8:57 AM, Micky Latowicki <[email protected] > <mailto:[email protected]>> wrote: > I started looking through your commit histories to find what was the line > that caused the problem. I saw that you fixed the problem since then. It > would have been courteous to note that your problem has been solved. > > > On Sunday, November 9, 2014 12:18:20 AM UTC+2, João Felipe Santos wrote: > Hi, > > I have a module (called Auditory) which exports an immutable type (called > ModulationFilter) which is only a container for a vector of BiquadFilters (a > type exported by another module, DSP). It also exports a helper function for > constructing ModulationFilter, defined here: > https://github.com/jfsantos/Auditory.jl/blob/master/src/ModulationFilterbank.jl#L23 > > <https://github.com/jfsantos/Auditory.jl/blob/master/src/ModulationFilterbank.jl#L23>) > The code for the whole module is available here: > https://github.com/jfsantos/Auditory.jl > <https://github.com/jfsantos/Auditory.jl>. > > On Julia 0.3, all tests pass. However, when using 0.4, I get the following > error when calling make_modulation_filter (which simply creates a vector of > BiquadFilters and calls the default constructor for ModulationFilterbank): > > ERROR: `convert` has no method matching > convert(::Type{ModulationFilterbank{T}}, ::Array{BiquadFilter{T},1}) > in modulation_filterbank at > /Users/jfsantos/.julia/v0.4/Auditory/src/ModulationFilterbank.jl:24 > > Calling methods(ModulationFilterbank) in Julia 0.3 returns: > > # 1 method for generic function "ModulationFilterbank": > ModulationFilterbank{T}(filters::Array{BiquadFilter{T},1}) > > but in 0.4, I get instead: > > 2-element Array{Any,1}: > call{T}(::Type{ModulationFilterbank{T}},filters::Array{BiquadFilter{T},1}) > call{T}(::Type{T},args...) at base.jl:34 > > I thought there was a difference in how 0.3 and 0.4 deal with the “default > constructor”, so I tried replicating the example with a sillier module: > > module Foo > export Bar > > immutable Bar{T} > x::Vector{T} > end > end > > However, I am able to create elements of this immutable type with a default > constructor either in 0.3 or 0.4. Of course, in this case I don’t have the > additional complication of using a type defined in a second module. > > Can anyone point out where I am making a mistake here? > > Thanks! > > Best regards > João >
