added tests

tests/accept/run/texplicitgeneric1.nim

@@ -0,0 +1,32 @@
+# test explicit type instantiation
+
+type
+  TDict*[TKey, TValue] = object 
+    data: seq[tuple[k: TKey, v: TValue]]
+  PDict*[TKey, #with `==`(a, b: TKey): bool
+               #     hash(a: TKey): int, 
+         TValue] = ref TDict[TKey, TValue]
+  
+proc newDict*[TKey, TValue](): PDict[TKey, TValue] = 
+  new(result)
+  result.data = @[]
+  
+proc add*[TKey, TValue](d: PDict[TKey, TValue], k: TKey, v: TValue) = 
+  d.data.add((k, v))
+  
+iterator items*[Tkey, tValue](d: PDict[TKey, TValue]): tuple[k: TKey, 
+               v: TValue] = 
+  for k, v in items(d.data): yield (k, v)
+    
+var d = newDict[int, string]()
+d.add(12, "12")
+d.add(13, "13")
+for k, v in items(d): 
+  stdout.write("Key: ", $k, " value: ", v)
+
+var c = newDict[char, string]()
+c.add('A', "12")
+c.add('B', "13")
+for k, v in items(c): 
+  stdout.write(" Key: ", $k, " value: ", v)
+