This lib adds a "new" pipe operator that is similar to the Maybe type on other functional programming languages.
The ~> operator will pipe values into functions unless a tuple {:error, _} would be sent.
When values other than an error tuple is being piped, it acts like a normal pipe (|>)
import PipeOperators.SkipOnErrorPipe
[1, 2, 3]
~> Enum.map(fn number -> number + 1 end)
#> [2, 3, 4]
However, if {:error, _} is piped, the function is not called and error is returned.
import PipeOperators.SkipOnErrorPipe
{:error, "something went wrong"}
~> next_step()
~> send_message()
#> {:error, "something went wrong"}
The package can be installed
by adding pipe_operators to your list of dependencies in mix.exs:
def deps do
[
{:pipe_operators, "~> 0.1.1"},
]
end