def fields.cut
import bend-toon-codec@0.1.0.0/src/hdr.bend as Hdrimport Base
import bend-toon-codec@0.1.0.0/src/split.bend as S
98def fields.cut(+n: U32, +d: U32, +s: String, +i: U32) -> Result<&2, &2, String, Hdr>:
99 fields.cut.if(U32.is_eq(i, S.none()), n, d, s, i)