Added subFrom (which is the inverse of addTo)

2021-12-25 20:07:37 +01:00
parent 8f32b2d887
commit 7a4a0f05d1
12 changed files with 142 additions and 9 deletions
@@ -222,6 +222,16 @@ public class ARRAY_MAP KEY_VALUE_GENERIC_TYPE extends ABSTRACT_MAP KEY_VALUE_GEN
 		return oldValue;
 	}
 	
+	@Override
+	public VALUE_TYPE subFrom(KEY_TYPE key, VALUE_TYPE value) {
+		int slot = findIndex(key);
+		if(slot < 0) return getDefaultReturnValue();
+		VALUE_TYPE oldValue = values[slot];
+		values[slot] -= value;
+		if(value < 0 ? (values[slot] >= getDefaultReturnValue()) : (values[slot] <= getDefaultReturnValue())) removeIndex(slot);
+		return oldValue;
+	}
+	
 #endif
 	@Override
 	public VALUE_TYPE putAndMoveToFirst(KEY_TYPE key, VALUE_TYPE value) {