def dec.if
import bend-kit-regex@0.8.0.0/regex.bend as Regeximport Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes
1376def dec.if(ok: Bool, a: Array<U32>, +len: U32, +i: U32) -> Array<U32> & Dc:
1377 match ok:
1378 case True{}:
1379 dec.at(len, i, Bytes.peek(a, i))
1380 case False{}:
1381 (a, DEnd{})