Access.fetch-exclamation-mark

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Link to this function

fetch!(container, key)

View Source (since 1.10.0)

Specs

fetch!(container(), term()) :: term()

Same as fetch/2 but returns the value directly, or raises a KeyError exception if key is not found.

Examples

iex> Access.fetch!(%{name: "meg", age: 26}, :name)
"meg"