Generic.fold_add: def of bend-collections-laws-crypto@1.0.0.0 Import: import bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend as Generic Lines 242-247 of bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/math/generic.bend&start_line=242&end_line=247 import Base import bend-collections-laws-crypto@1.0.0.0/src/math/num.bend as N def fold_add(~T: Data, ~op: N.Op -> T, xs: List<&2, T>, +acc: T) -> T: match xs: case Nil{}: acc case Con{+x, t}: fold_add(~T, ~op, t, op(N.Add{acc, x})) Uses (2): https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/math/num.bend&name=Op