update

core.h

@@ -60,6 +60,7 @@ void *pushSize(Arena *arena, size_t bytes);
 Arena *arenaAlloc(size_t capacity);
 void arenaFree(Arena *arena);
 void arenaFreeFrom(Arena *arena, size_t pos);
+void arenaPopTo(Arena *arena, void *pos);
 
 void initialiseCore();
 
@@ -150,7 +151,7 @@ struct string {
 
 #define strlit(lit) (string{(char *)(lit), sizeof(lit) - 1})
 #define PushString(arena, length) (string{ (char *)pushSize(arena, length), (length) })
-string operator""_s(const char *cstrLiteral, unsigned long length);
+string operator""_s(const char *cstrLiteral, size_t length);
 
 // C Strings
 const char *cstring(Arena *arena, list<char> buf); 
@@ -209,8 +210,8 @@ void log(const char *fmt, ...);
 void logError(const char *fmt, ...);
 
 // ### Loops ###
-#define EachIn(list, it) size_t it = 0; it < list.length; it++
-#define EachInReversed(list, it) size_t it = list.length - 1; it >= 0 && it < list.length; it--
+#define EachIn(list, it) size_t it = 0; it < (list).head; it++
+#define EachInReversed(list, it) size_t it = (list).head - 1; it >= 0 && it < (list).head; it--
 #define EachInArray(arr, it)  size_t it = 0; it < ArrayCount(arr); ++it
 
 // ### Misc ###