Re: A little print problem

"Alasdair McAndrew" <[email protected]> writes:

> Here it is:
> 
> F:=FFP(PF 2,x^3+x+1)
> x:=generator()$F

(24) -> for i in 0..7 repeat print([i, x^i]$List Union(INT, F))
   [0,1]
   [1,%A]
        2
   [2,%A ]
   [3,%A + 1]
        2
   [4,%A  + %A]
        2
   [5,%A  + %A + 1]
        2
   [6,%A  + 1]
   [7,1]
                                                                   Type: Void


The "problem" is not print, but rather that the simplest signature for the
constructor function in [i, x^i] the interpreter can find takes some F's and
returns a List F.  Above I explicitly told the interpreter to use the
constructor function that takes Union(INT, F)'s and returns a list of such
elements. Compare with

for i in 0..7 repeat print([i, x^i]::List Union(INT, F))

Martin