sirh3e/Rust

namespace Sirh3e.Rust.Result;

public readonly partial struct Result<TOk, TErr>
{
    /// <summary>
    /// Returns the contained Ok value or computes it from a closure.
    /// </summary>
    /// <param name="map"></param>
    /// <returns></returns>
    /// <exception cref="ArgumentNullException">Throws only if map is null</exception>
    public TOk UnwrapOrElse(Func<TErr, TOk> map)
        => IsOk ? _ok : (_ = map ?? throw new ArgumentNullException(nameof(map)))(_err);
}