More utilities for options&results

emis_funky_funktions.py

@@ -184,6 +184,12 @@ def bind_opt(f: Callable[[A], Option[B]], o: Option[A]) -> Option[B]:
 			return f(val)
 		case none:
 			return none
+def note(e: B, o: Option[A]) -> Result[A, B]:
+	match o:
+		case Some(val):
+			return Ok(val)
+		case None:
+			return Err(e)
 
 # Results!
 @dataclass(frozen=True)
@@ -204,4 +210,16 @@ def bind_res(f: Callable[[A], Result[C, B]], r: Result[A, B]) -> Result[C, B]:
 		case Ok(val):
 			return f(val)
 		case not_okay:
-			return not_okay
+			return not_okay
+def map_err(f: Callable[[B], C], r: Result[A, B]) -> Result[A, C]:
+	match r:
+		case Err(e):
+			return Err(f(e))
+		case oki_doke:
+			return oki_doke
+def hush(r: Result[A, Any]) -> Option[A]:
+	match r:
+		case Ok(val):
+			return Some(val)
+		case not_okay:
+			return None