chuck: keywords and strings are distinct map keys

Author: asarhaddon

impls/chuck/types/subr/MalDissoc.ck

@@ -6,19 +6,20 @@ public class MalDissoc extends MalSubr
         MalObject.slice(args, 1) @=> MalObject ks[];
 
         MalObject result[0];
-        int cachedKeys[0];
+        string cachedKeys[0];
 
         for( 0 => int i; i < ks.size(); i++ )
         {
-            true => cachedKeys[ks[i].stringValue];
+            ks[i].type => cachedKeys[ks[i].stringValue];
         }
 
         for( 0 => int i; i < map.size(); 2 +=> i )
         {
             map[i] @=> MalObject key;
             map[i+1] @=> MalObject value;
 
-            if( !cachedKeys[key.stringValue] )
+            if (   cachedKeys[key.stringValue] == null
+                || cachedKeys[key.stringValue] != key.type )
             {
                 result << key;
                 result << value;

impls/chuck/types/subr/MalGet.ck

@@ -20,7 +20,7 @@ public class MalGet extends MalSubr
             map[i] @=> mapKey;
             map[i+1] @=> mapValue;
 
-            if( keyName == mapKey.stringValue )
+            if( keyName == mapKey.stringValue && args[1].type == mapKey.type )
             {
                 true => isKeyPresent;
             }

impls/chuck/types/subr/MalIsContains.ck

@@ -14,7 +14,7 @@ public class MalIsContains extends MalSubr
         {
             map[i] @=> mapKey;
 
-            if( keyName == mapKey.stringValue )
+            if( keyName == mapKey.stringValue && args[1].type == mapKey.type )
             {
                 true => isKeyPresent;
             }