Gleam decode Option
gleam add gledo
import gledo
pub fn main() {
Some(123) |> dynamic.from |> gledo.decode_option // Ok(Some(123))
None |> dynamic.from |> gledo.decode_option // Ok(None)
123 |> dynamic.from |> gledo.decode_option // Error([DecodeError("Option", "Int", [])])
}
Further documentation can be found at https://hexdocs.pm/gledo.
dynamic.optional
from stdlib has permissive design and will successfully decode any value.
If need to have strict decoding for Option
value only, feel free to use gledo
gleam run # Run the project
gleam test # Run the tests
gleam shell # Run an Erlang shell