elixir String to list of single character strings

This example shows how to convert a String into a list of single characters. This could be used to enumerate a string.

Elixir calls each character a grapheme so we use the String.graphemes/1 method.

["T", "e", "s", "t"] = String.graphemes("Test")

# Contrast this with codepoints which may return
# multiple codepoints for a single character
["ö"]      = String.graphemes("ö")
["o", "̈"] = String.codepoints("ö")

Documentation: String.graphemes/1