Aja v0.4.3
Aja

A.Pair (Aja v0.4.3) View Source

Convenience helpers for working with {atom, value} tuples without breaking the pipe.

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Functions

unwrap!(pair, atom)

Unwraps an idiomatic {atom, value} tuple when the atom is what is being expected. Convenient for not breaking the pipe.

wrap(value, atom)

Wraps the value as an idiomatic {atom, value} tuple. Convenient for not breaking the pipe.

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unwrap!(pair, atom)

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Unwraps an idiomatic {atom, value} tuple when the atom is what is being expected. Convenient for not breaking the pipe.

Examples 

iex> {:ok, 55} |> A.Pair.unwrap!(:ok)
55
iex> :error |> A.Pair.unwrap!(:ok)
** (ArgumentError) unwrap!/2 expected {:ok, _}, got: :error
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wrap(value, atom)

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Wraps the value as an idiomatic {atom, value} tuple. Convenient for not breaking the pipe.

Examples 

iex> 55 |> A.Pair.wrap(:ok)
{:ok, 55}
iex> %{a: 5} |> Map.update!(:a, & &1 + 1) |> A.Pair.wrap(:no_reply)
{:no_reply, %{a: 6}}