From octave-maintainers-request at bevo dot che dot wisc dot edu Sun Jan 12 19:04:19 2003
Subject: Re: overloaded functions
From: Andy Adler <adler at site dot uottawa dot ca>
To: Paul Kienzle <pkienzle at users dot sourceforge dot net>
cc: octave-maintainers at bevo dot che dot wisc dot edu
Date: Sun, 12 Jan 2003 19:59:48 -0500 (EST)

That's a really useful function, Paul.

Does it add any significant overhead?

Andy


On Sun, 12 Jan 2003, Paul Kienzle wrote:

> I've added dispatch.cc to octave-forge/main/miscellaneous.
> This adds the ability to overload functions in octave.
>
> E.g.,
>
>     mark_as_command dispatch
>     dispatch sin string g
>     function g,'g',end
>     sin('x')
>     # ==> g
>     sin(3)
>     # ==> 0.14112
>     dispatch min string g
>     min([1 2 3])
>     # ==> 1
>     min('x')
>     # ==> g
>     dispatch reshape string g
>     reshape(1:6,2,3)
>     # ==> [1 3 5; 2 4 6 ]
>     reshape('x',2,3)
>     # ==> g
>     help sin
>     # ==>
> sin is a builtin function
>  - Mapping Function:  sin (X)
>      Compute the sin of each element of X.
>    Overloaded function string:g
>
> If you are using octave 2.1.40 compile it with mkoctfile -DOCTAVE2140
> dispatch.cc, otherwise use octave 2.1.43.
>
> Now we need PKG_ADD to contain the appropriate dispatch functions
> for octave forge, such as "dispatch find sparse spfind".
>
> Paul Kienzle
> pkienzle at users dot sf dot net
>
>