WithClauseError — Elixir v1.18.4 (original) (raw)

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An exception raised when a term in a with/1 expression does not match any of the defined -> clauses in its else.

The following fields of this exception are public and can be accessed freely:

For example, this exception gets raised for a with/1 like the following, because the {:ok, 2} term does not match the :error or {:error, _} clauses in theelse:

with {:ok, 1} <- {:ok, 2} do
  :woah
else
  :error -> :error
  {:error, _} -> :error
end