On Fri, Oct 30, 2020 at 12:46 PM Martin Baker wrote:
>
> On 29/10/2020 21:10, Neven Sajko wrote:
> > My guess would be that it would be better if Vector's constructor
> > had a length parameter, because that would enable greater type
> > safety (i.e. I couldn't pass a Vector of the wrong length
On 30/10/2020 17:29, Ralf Hemmecke wrote:
> In FriCAS they are not (also not in Aldor).
> The reason is that no computation is done at compile time.
> Of course that could be changed if there were a sublanguage that the
> compiler could execute at compile time.
>
> But why would you believe that
> a: (VectorFL Double 3)
> b: (VectorFL Double (1 + 2))
...
> a + b should compile because numeric values can be normalised to a
> single number which is equal in this case (in Idris they are
> definitionaly equal).
In FriCAS they are not (also not in Aldor).
The reason is that no computation is
On 29/10/2020 21:10, Neven Sajko wrote:
My guess would be that it would be better if Vector's constructor had
a length parameter, because that would enable greater type safety
(i.e. I couldn't pass a Vector of the wrong length to a function).
For me one of the great advantages of static types
Checkout the DirectProduct domain. Granted, this name might not be so obvious.
In a computer algebra system like FriCAS the name "Vector" should
probably be reserved for something with specific mathematical
properties. e.g. as in differential geometry.
But I think that there are some good
Hello,
While I am slowly learning Fricas, I noticed a pattern (or the lack of
it) that struck me as odd. Namely, some data structure types of fixed
size have constructors which take a parameter to define the size as
part of the type (e.g., SquareMatrix), while others (like Vector) do
not take a
