collection structs name replaced with macro

src/string/str.c

@@ -125,7 +125,7 @@ str str_toLower(str src){
     return r;
 }
 
-str hex_to_str(Array buf, bool uppercase){
+str hex_to_str(Array(u8) buf, bool uppercase){
     StringBuilder sb = StringBuilder_alloc(buf.size * 2 + 1);
     StringBuilder_append_memory(&sb, buf, uppercase);
     return StringBuilder_getStr(&sb);