List.starts_with-question-mark

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starts_with?(list, prefix)

(since 1.5.0)

Specs

starts_with?([...], [...]) :: boolean()

starts_with?(list(), []) :: true

starts_with?([], [...]) :: false

Returns true if list starts with the given prefix list; otherwise returns false.

If prefix is an empty list, it returns true.

Examples

iex> List.starts_with?([1, 2, 3], [1, 2])
true

iex> List.starts_with?([1, 2], [1, 2, 3])
false

iex> List.starts_with?([:alpha], [])
true

iex> List.starts_with?([], [:alpha])
false