discard """
  output: "Key: 12 value: 12Key: 13 value: 13 Key: A value: 12 Key: B value: 13"
  disabled: true
"""

# test explicit type instantiation

type
  TDict*[TKey, TValue] = object 
    data: seq[tuple[k: TKey, v: TValue]]
  PDict*[TKey, TValue] = ref TDict[TKey, TValue]
  
proc newDict*[TKey, TValue](): PDict[TKey, TValue] = 
  new(result)
  result.data = @[]
  
proc add*(d: PDict, k: TKey, v: TValue) = 
  d.data.add((k, v))
  

#iterator items*(d: PDict): 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)