feat: add containsKey method to Map and validate key types in subscript operations

Implement `containsKey()` native method on Map that returns a boolean indicating whether the given key exists in the map. Add `validateKey()` helper to reject non-value-type keys (objects, lists, fibers, etc.) with a clear runtime error. Refactor `wrenMapGet()` signature to return success/failure via bool and output the value through an out-parameter, enabling both `containsKey()` and the existing subscript operator to share the same key validation and lookup logic. Update `map_subscript` to return `null` instead of crashing when a key is not found. Add test cases for `containsKey` success/failure, and runtime error tests for invalid key types in subscript getter, setter, and containsKey.
2015-01-25 20:39:19 +00:00
parent 1d195f13ea
commit a83205ef89
8 changed files with 65 additions and 10 deletions
@@ -5,7 +5,11 @@ An associative collection that maps keys to values. More details [here](../maps.

 ### **clear**

-Removes all entries
+Removes all entries from the map.
+
+### **containsKey**(key)
+
+Returns `true` if the map contains `key` or `false` otherwise.

 ### **count**