[Gambas-devel] About gb.gsl components

[Emil Lenngren]

Hi. Some null checks seems to be required. For example:

Dim A As Complex = NULL
Print Abs(A)

-> Segmentation fault

Another question: If I have a class I want to implement _operators in, do I
have to implement all 13 or can I set some of them to NULL?

/Emil

2012/7/8 Benoît Minisini <gambas at ...1...>

> Hi Randall,
>
> I have no news from you for a long time. I hope everything is ok for you!
>
> Since revision #4908, the interpreter allows any native class to handle
> the standard arithmetic operators - at least some of them at the moment:
> +, -, *, /, =, <>, and Abs(). This is done through the "_operators"
> interface.
>
> Moreover, the "_convert" interface now allows to convert any native
> object to any other datatype, and is called by Str() and Print to
> convert an object to a localized string representation.
>
> I used that in the Complex class, so that you can do:
>
>         Dim A As New Complex(1, 4)
>         Dim B As New Complex(3, -1)
>
>         Print A;; B;; A * 2;; A * B;; A / B
>
>         --> 1+4i 3-i 2+8i 7+11i -0,1+1,3i
>
> I have ',' inside numbers because this the french decimal separator.
>
> Tell me if you want to continue working on gb.gsl. That new feature
> could be implemented in polynomials, matrix... with automatic
> conversions between them maybe!
>
> Regards,
>
> --
> Benoît Minisini
>
>
>
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