> > > BTW: Do we have a cumulative sum function in Fricas?
> > > The cumSum([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) should
> > > give me [0, 1, 3, 6, 10, 15, 21, 28, 36, 45].
> >
> > scan(+, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9], 0)
It works as expected in the interpreter:
(3) -> al := [1,2,3,4,5]
(3) [1,2,3,4,5]
Type: List(PositiveInteger)
(4) -> scan('+, al, 1)
(4) [2,4,7,11,16]
Type: List(PositiveInteger)
Compiling the same (really?) code with some more
explicit type declarations:
al : LPI := [1,2,3,4,5]
l : LPI := scan("+", al, 1::PI)
gives me back:
****** comp fails at level 6 with expression: ******
error in function horizSplit
(SEQ
(LET #1=#:G7159
(~= (|reduce| "+" |lc|) (|ncols| A)))
(|exit| 1
(IF #1#
(|error| "split does not result in proper partition")
(SEQ
(LET (|:| |al| (|List| (|PositiveInteger|)))
(|construct| 1 2 3 4 5))
(LET (|:| |l| (|List| (|PositiveInteger|)))
| << |
(|scan| "+" |al| (|::| 1 (|PositiveInteger|)))
| >> |)
(LET |al|
(|construct| 1 2 3 4 5))
(|scan| "+" |al| 1) (|exit| 1 (|construct| A))))))
****** level 6 ******
$x:= (scan + al (:: (One) (PositiveInteger)))
$m:= $EmptyMode
$f:=
((((|l| #) (|al| # #) (#:G7159 #) (|value| # #) ...)))
>> Apparent user error:
NoValueMode
is an unknown mode
I do not understand why I get this message or what *exactly*
the compiler tries to tell me.
Any hint please?
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