C# (CSharp) OptionAsync.SomeAsync示例

示例#1

 public OptionAsync <A> ReturnAsync(Func <Unit, Task <A> > f) =>
 OptionAsync <A> .SomeAsync(f(unit));

示例#2

 public OptionAsync <A> SomeAsync(Task <A> taskA) =>
 isnull(taskA)
         ? throw new ArgumentNullException(nameof(taskA))
         : OptionAsync <A> .SomeAsync(taskA);