Init

2022-01-20 17:00:00 +01:00
parent 0d19b846f2
commit aebd570a37
7 changed files with 237 additions and 7 deletions
--- a/src/utils/fp.nim
+++ b/src/utils/fp.nim
@@ -14,6 +14,10 @@ proc findMaybeFn*[T, B](fns: seq[T {.nimcall.} -> Maybe[B]], val: T): Maybe[B] =
      return res
  return Nothing[B]()

+proc notNegative*[int](x: Maybe[int]): Maybe[int] =
+  ## Maps nil object to nothing
+  x.filter(i => i >= 0)
+
 when isMainModule:
  echo @[
  (x: int) => (if x == 2: Just("foo") else: Nothing[string]()),