fixes a subtle tables.nim regression

lib/pure/collections/tables.nim

@@ -307,6 +307,22 @@ proc initTable*[A, B](initialSize = defaultInitialSize): Table[A, B] =
       b = initTable[char, seq[int]]()
   initImpl(result, initialSize)
 
+proc `[]=`*[A, B](t: var Table[A, B], key: A, val: B) =
+  ## Inserts a ``(key, value)`` pair into ``t``.
+  ##
+  ## See also:
+  ## * `[] proc<#[],Table[A,B],A>`_ for retrieving a value of a key
+  ## * `hasKeyOrPut proc<#hasKeyOrPut,Table[A,B],A,B>`_
+  ## * `mgetOrPut proc<#mgetOrPut,Table[A,B],A,B>`_
+  ## * `del proc<#del,Table[A,B],A>`_ for removing a key from the table
+  runnableExamples:
+    var a = initTable[char, int]()
+    a['x'] = 7
+    a['y'] = 33
+    doAssert a == {'x': 7, 'y': 33}.toTable
+
+  putImpl(enlarge)
+
 proc toTable*[A, B](pairs: openArray[(A, B)]): Table[A, B] =
   ## Creates a new hash table that contains the given ``pairs``.
   ##
@@ -362,22 +378,6 @@ proc `[]`*[A, B](t: var Table[A, B], key: A): var B =
   ##   the table
   get(t, key)
 
-proc `[]=`*[A, B](t: var Table[A, B], key: A, val: B) =
-  ## Inserts a ``(key, value)`` pair into ``t``.
-  ##
-  ## See also:
-  ## * `[] proc<#[],Table[A,B],A>`_ for retrieving a value of a key
-  ## * `hasKeyOrPut proc<#hasKeyOrPut,Table[A,B],A,B>`_
-  ## * `mgetOrPut proc<#mgetOrPut,Table[A,B],A,B>`_
-  ## * `del proc<#del,Table[A,B],A>`_ for removing a key from the table
-  runnableExamples:
-    var a = initTable[char, int]()
-    a['x'] = 7
-    a['y'] = 33
-    doAssert a == {'x': 7, 'y': 33}.toTable
-
-  putImpl(enlarge)
-
 proc hasKey*[A, B](t: Table[A, B], key: A): bool =
   ## Returns true if ``key`` is in the table ``t``.
   ##
@@ -1285,6 +1285,22 @@ proc initOrderedTable*[A, B](initialSize = defaultInitialSize): OrderedTable[A,
       b = initOrderedTable[char, seq[int]]()
   initImpl(result, initialSize)
 
+proc `[]=`*[A, B](t: var OrderedTable[A, B], key: A, val: B) =
+  ## Inserts a ``(key, value)`` pair into ``t``.
+  ##
+  ## See also:
+  ## * `[] proc<#[],OrderedTable[A,B],A>`_ for retrieving a value of a key
+  ## * `hasKeyOrPut proc<#hasKeyOrPut,OrderedTable[A,B],A,B>`_
+  ## * `mgetOrPut proc<#mgetOrPut,OrderedTable[A,B],A,B>`_
+  ## * `del proc<#del,OrderedTable[A,B],A>`_ for removing a key from the table
+  runnableExamples:
+    var a = initOrderedTable[char, int]()
+    a['x'] = 7
+    a['y'] = 33
+    doAssert a == {'x': 7, 'y': 33}.toOrderedTable
+
+  putImpl(enlarge)
+
 proc toOrderedTable*[A, B](pairs: openArray[(A, B)]): OrderedTable[A, B] =
   ## Creates a new ordered hash table that contains the given ``pairs``.
   ##
@@ -1342,22 +1358,6 @@ proc `[]`*[A, B](t: var OrderedTable[A, B], key: A): var B =
   ##   key is in the table
   get(t, key)
 
-proc `[]=`*[A, B](t: var OrderedTable[A, B], key: A, val: B) =
-  ## Inserts a ``(key, value)`` pair into ``t``.
-  ##
-  ## See also:
-  ## * `[] proc<#[],OrderedTable[A,B],A>`_ for retrieving a value of a key
-  ## * `hasKeyOrPut proc<#hasKeyOrPut,OrderedTable[A,B],A,B>`_
-  ## * `mgetOrPut proc<#mgetOrPut,OrderedTable[A,B],A,B>`_
-  ## * `del proc<#del,OrderedTable[A,B],A>`_ for removing a key from the table
-  runnableExamples:
-    var a = initOrderedTable[char, int]()
-    a['x'] = 7
-    a['y'] = 33
-    doAssert a == {'x': 7, 'y': 33}.toOrderedTable
-
-  putImpl(enlarge)
-
 proc hasKey*[A, B](t: OrderedTable[A, B], key: A): bool =
   ## Returns true if ``key`` is in the table ``t``.
   ##