. -- access to elements whose key is a symbol

x.k -- the same as x#(global k), i.e., treat k as a global symbol and provide the value stored in the hash table x under the key k.

May also be used in an assignment.

i1 : x = new MutableHashTable;

i2 : x.k = 444



o2 = 444

i3 : x.k



o3 = 444

i4 : peek x



o4 = MutableHashTable{k => 444}

See also:

# -- length, or access to elements

.? -- check for presence of elements whose key is a symbol

global -- get a global symbol