Rename toOption() -> option()

To match the style of std/options, where option() is also used
to convert a ref to an Option.

Readme.md

@@ -186,7 +186,7 @@ let y = parseInt("XX").catch  # equals int.failure(..)
 Any Result can be converted to an Option:
 
 ```nim
-let converted = works().toOption  # equals @[1, 1, 2, 2, 2].some
+let converted = works().option  # equals @[1, 1, 2, 2, 2].some
 ```
 
 Banning Errors

questionable/results.nim

@@ -38,7 +38,7 @@ template `=?`*[T](name: untyped{nkIdent}, value: ?!T): bool =
   template name: T {.used.} = value.unsafeGet()
   value.isOk
 
-proc toOption*[T,E](value: Result[T,E]): ?T =
+proc option*[T,E](value: Result[T,E]): ?T =
   if value.isOk:
     value.unsafeGet.some
   else:

testmodules/result/test.nim

@@ -112,8 +112,8 @@ suite "result":
     check (40.success > 42 == false.success)
 
   test "Result can be converted to Option":
-    check 42.success.toOption == 42.some
-    check int.failure(error).toOption == int.none
+    check 42.success.option == 42.some
+    check int.failure(error).option == int.none
 
   test "examples from readme work":
 
@@ -149,5 +149,5 @@ suite "result":
 
     # Conversion to Option
 
-    let converted = works().toOption
+    let converted = works().option
     check (converted == @[1, 1, 2, 2, 2].some)