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Re: [Axiom-mail] A little print problem


From: Martin Rubey
Subject: Re: [Axiom-mail] A little print problem
Date: 16 Oct 2007 15:25:37 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.4

"Alasdair McAndrew" <address@hidden> 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





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