String.at

You're seeing just the function at, go back to String module for more information.

at(string, position)

Specs

at(t(), integer()) :: grapheme() | nil

Returns the grapheme at the position of the given UTF-8 string. If position is greater than string length, then it returns nil.

Examples

iex> String.at("elixir", 0)
"e"

iex> String.at("elixir", 1)
"l"

iex> String.at("elixir", 10)
nil

iex> String.at("elixir", -1)
"r"

iex> String.at("elixir", -10)
nil