Witha v0.1.1 Witha.Nilable View Source
Maybe monad chain.
Typespec of maybe is term | nil
.
iex> witha Witha.Nilable, x1 <- 1, do: x1 + 1
2
iex> witha Witha.Nilable, x1 <- nil, do: x1 + 1
nil
Just term
can chain.
iex> witha Witha.Nilable, [
iex> x1 <- 1,
iex> x2 <- x1 + 1,
iex> ], do: x1 + x2
3
nil
& raise
stops the chain.
iex> witha Witha.Nilable, [
iex> x1 <- nil,
iex> x2 <- x1 + 1,
iex> ], do: x1 + x2
nil
iex> witha Witha.Nilable, [
iex> x1 <- raise("駄目"),
iex> x2 <- {:ok, x1 + 1},
iex> ], do: x1 + x2
nil
Link to this section Summary
Functions
Callback implementation for c:Witha.Aspect.flat_map/2
Callback implementation for c:Witha.Aspect.handle_error/1
Callback implementation for c:Witha.Aspect.new/1
Link to this section Functions
Callback implementation for c:Witha.Aspect.flat_map/2
.
Callback implementation for c:Witha.Aspect.handle_error/1
.
Callback implementation for c:Witha.Aspect.new/1
.