Ints in composite types and method missing

[JeffreySarnoff]

(I understand that basic initializers are autogenerated, but with other explicit inner generators, the basic initializers seem to be required explicitly -- these examples omit the extra initializers)

this works
julia> type T
val::Int
T(val::Int)=new(val)
end

julia> T(5)
T(5)

this does not work
julia> type T1
aval::Int
bval::Int
T(aval::Int,bval::Int) = new(aval,bval)
end

julia> T1(5,5)
no method T1(Int64,Int64)
in method_missing at base.jl:72

[JeffBezanson]

And?

[timholy]

You have a typo in the inner constructor for type T1: it should be T1(aval... and not T(aval....

[JeffBezanson]

I think that is the issue --- if there is "other stuff" in the type block, but no constructor definition, the default constructor still goes away. This doesn't bother me much; the resulting "no method" error is correct and would lead you to the source of the problem.

[StefanKarpinski]

I think that's desirable behavior. Even if you don't define a method on the type itself, by defining any function in there, you have access to the new pseudo-function and you presumably are providing yourself with the means to construct objects of the given type. Unless we want to disallow adding methods to other generic functions inside type blocks, I don't see any way around this doing what it currently does.

[JeffreySarnoff]

thank you

On Mon, Nov 12, 2012 at 4:20 PM, Jeff Bezanson [email protected]:

I think that is the issue --- if there is "other stuff" in the type block,
but no constructor definition, the default constructor still goes away.
This doesn't bother me much; the resulting "no method" error is correct and
would lead you to the source of the problem.

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