def split1
import bend-kit-multipart@0.3.0.0/multipart.bend as Multipartimport Base
28def split1(s: String, +c: U32) -> String & String:
29 match s:
30 case SNil{}:
31 (SNil{}, SNil{})
32 case SCon{Chr{+h}, +t}:
33 Bool.pick(String & String, U32.is_eq(h, c), (SNil{}, t), split1.cons(h, split1(t, c)))