Thanks
So this means we cannot do the dynamic names as in Matlab (where the "b" is
the member name)
BTW, I needed to extract the member name as a string to compare with
another string and the only way I got it done was with
julia> nomes=names(MyType)
1-element Array{Symbol,1}:
:a
julia> @sprintf("%s", nomes[1])
"a"
but don't know how to do it the other way around. Not that I need it now
but Matlab dynamic names are quite handy.
Terça-feira, 25 de Março de 2014 3:01:13 UTC, Sam L escreveu:
>
> After some experimentation, it looks like second way takes a symbol or
> variable who's value is a symbol.
>
> julia> type MyType; a::Int; end
>
> julia> x = MyType(3)
> MyType(3)
>
> julia> x.a
> 3
>
> julia> x.(a)
> ERROR: a not defined
>
> julia> x.(:a)
> 3
>
> julia> b = :a
> :a
>
> julia> x.(b)
> 3
>
>
> On Monday, March 24, 2014 7:46:38 PM UTC-7, J Luis wrote:
>>
>> The doc of getfield says
>>
>> getfield(*value*, *name::Symbol*)
>>
>> Extract a named field from a value of composite type. The syntax a.bcalls
>> getfield(a, :b), and the syntax a.(b) calls getfield(a, b).
>>
>> but when I try the a.(b) variation, it errors (or it's me who errors?)
>>
>> julia> gmt_modules.write
>> "<?I,>?O"
>>
>> julia> gmt_modules.(write)
>> ERROR: type: getfield: expected Symbol, got Function
>>
>>
>>
>>
>>
