[Bug-apl] defining new operator

[Fausto Saporito]

Hello all,

sorry if I bother you again, but I tried to find some hints in the APL2 Language Reference Manual without luck.

In the Sullivan's paper, there's the reference to a "scan" operator quite fast more suited to be used with his multi precision package.
This is its definition:

∇ z←(F scan)x;y

z←⊂y←⊃x
∆1:!(0=⍴x←1"x)/0
z,←⊂y←y F⊃x 

!∆1 

the "!" is the branch arrow.

Now the problem is with GNU APL I cannot define this operator, cause I don't know how to specify F is a function not a variable.

is there a way to do that ? 

thanks,

fausto