![[next]](next.gif)
![[previous]](previous.gif)
![[up]](up.gif)
![[top]](top.gif)
positions(VisibleList,Function) -- which elements of a list satisfy a condition
Synopsis:
Code:
-- ../../../Macaulay2-0.9.2/Macaulay2/m2/structure.m2:8-10
positions(VisibleList,Function) := (v,f) -> (
apply(select(pack(2, mingle{v,0 .. #v-1}), p -> f p#0), p -> p#1)
)
![[next]](next.gif)
![[previous]](previous.gif)
![[up]](up.gif)
![[top]](top.gif)