Michael Somos on Sun, 7 Nov 1999 14:52:45 -0500 (EST)


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Re: if-bug 

Leonhard Moehring wrote :

> ? if([1]==1,)
>   ***   forbidden addition t_INT + t_VEC.
> Seems like a bug to me.

Actually, no. It is a feature. You can multiply or divide a vector
by a scalar, but not add or subtract. In this case, comparison is
in the same class as addition, hence is not allowed. Thus we get :

%1 = [1]
gp> [1]+1
  ***   forbidden addition t_INT + t_VEC.
gp> [1]==1
  ***   forbidden addition t_INT + t_VEC.

Shalom, Michael