I'm not convinced it's more Julian to use such a helper function, since it
will needlessly compile a different method for each distinct set of
parameters. Directly accessing the `parameter` field of the type in
question avoids this.
On Friday, September 11, 2015 at 12:30:16 PM UTC-7, Josh Langsfeld wrote:
>
> You can access the 'parameters' field of a type instance object. But the
> standard Julian way to get type parameters is to just define a helper
> function:
>
> typeparams{A,B}(::Type{T{A,B}}) = A,B
>
> On Friday, September 11, 2015 at 3:20:17 PM UTC-4, Erik Schnetter wrote:
>>
>> Is there a function in Julia that allows accessing the parameters of a
>> type?
>>
>> For example, if I have
>>
>> type T{A,B} end
>>
>> then I'd like a way to convert `T{Int, Char}` to `(Int, Char)`.
>>
>> In other words, is there a way to get at the contents of `DataType`
>> objects?
>>
>> Thanks,
>> -erik
>>
>> --
>> Erik Schnetter <[email protected]>
>> http://www.perimeterinstitute.ca/personal/eschnetter/
>>
>
