intersperse package:text

O(n) The intersperse function takes a character and places it between the characters of a Text. Example:
>>> T.intersperse '.' "SHIELD"
"S.H.I.E.L.D"
Performs replacement on invalid scalar values.
O(n) Take a character and place it between each of the characters of a 'Stream Char'. Properties
unstream . intersperse c . stream = intersperse c
O(n) The intersperse function takes a character and places it between the characters of a Text. Performs replacement on invalid scalar values.