toString --> $.

lib/pure/memfiles.nim

@@ -254,7 +254,7 @@ type MemSlice* = object  ## represent slice of a MemFile for iteration over deli
 
 proc c_memcpy(a, b: pointer, n: int) {.importc: "memcpy", header: "<string.h>".}
 
-proc toString*(ms: MemSlice): string {.inline.} =
+proc `$`*(ms: MemSlice): string {.inline.} =
   ## Return a Nim string built from a MemSlice.
   var buf = newString(ms.size)
   c_memcpy(addr(buf[0]), ms.data, ms.size)

tests/misc/tmemslices.nim

@@ -2,5 +2,5 @@ import memfiles
 var inp = memfiles.open("readme.txt")
 for mem in memSlices(inp):
   if mem.size > 3:
-    echo("#" & toString(mem) & "#")
+    echo("#" & $mem & "#")
 close(inp)