use distinct string

nim-lang · Feb 10, 2020 · 81b1027 · 81b1027
1 parent ed6cc73
commit 81b1027
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/pure/typetraits.nim b/lib/pure/typetraits.nim
@@ -16,7 +16,9 @@ export system.`$` # for backward compatibility
 
 include "system/inclrtl"
 
-proc getTypeid*(t: typedesc): string {.magic: "TypeTrait", since: (1, 1).} =
+type
+  Typeid* = distinct string ## opaque, used by `getTypeid`
+proc getTypeid*(t: typedesc): Typeid {.magic: "TypeTrait", since: (1, 1).} =
   ## returns a unique string id representing a type; the id is stable across
   ## recompilations of the same program, but may differ if the program source
   ## changes.