/// <summary>
/// Projects the current type of option into a new type of option and flattens the result (Linq SelectMany).
/// </summary>
/// <typeparam name="R">The type of the option returned by the transform function.</typeparam>
/// <param name="f">A transform function to apply to the current option.</param>
public OptionF <R> Bind <R>(Func <T, OptionF <R> > f)
{
if (this.IsNone)
{
return(OptionF <R> .None());
}
else
{
return(f(this.Value));
}
}
/// <summary>
/// Projects the current type of option into a new type of option (Linq Select).
/// </summary>
/// <typeparam name="R">The type of the option returned by the transform function.</typeparam>
/// <param name="f">A transform function to apply to the current option.</param>
public OptionF <R> Map <R>(Func <T, R> f)
{
if (this.IsNone)
{
return(OptionF <R> .None());
}
else
{
return(OptionF <R> .Some(f(this.Value)));
}
}
/// <summary>
/// Returns true if the option contains a value and false otherwise.
/// </summary>
/// <param name="some">The value of the option.</param>
public static bool MatchSomeF <T>(this OptionF <T> opt, out T some)
{
if (opt.IsSome)
{
some = opt.Value;
return(true);
}
else
{
some = default(T);
return(false);
}
}
/// <summary>
/// Returns true if the option does not contain a value and false otherwise.
/// </summary>
public static bool MatchNoneF <T>(this OptionF <T> opt)
{
return(opt.IsNone);
}