Elixir v1.12.0

String.graphemes

You're seeing just the function graphemes, go back to String module for more information.
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graphemes(string)

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Specs

graphemes(t()) :: [grapheme()]

Returns Unicode graphemes in the string as per Extended Grapheme Cluster algorithm.

The algorithm is outlined in the Unicode Standard Annex #29, Unicode Text Segmentation.

For details about code points and graphemes, see the String module documentation.

Examples 

iex> String.graphemes("Ńaïve")
["Ń", "a", "ï", "v", "e"]

iex> String.graphemes("\u00e9")
["é"]

iex> String.graphemes("\u0065\u0301")
["é"]