Project Lambda: Java Language Specification draft

[Paul Benedict]

On Sat, Jan 23, 2010 at 10:43 AM, Stephen Colebourne
<scolebourne at joda.org> wrote:
> 2010/1/22 Alex Buckley <Alex.Buckley at sun.com>:
>> [15.8.7 Lambda instance invocation]
>>  #()(42)!()  // Evaluates to the value 42.
>>
>>  #int() fortyTwo = #()(42);
>>  assert fortyTwo!() == 42;
>>
>>  #int(int) doubler = #(int x)(x + x);
>>  assert doubler!(fortyTwo!()) == 84;
>
> I find the ! invocation pretty darn ugly I'm afraid. I can't help
> reading "not". The symbol also blends into the brackets visually.
>

Yes, this is horrible syntax. It is bound to be a stumbling block for
even those with the most nimble feet.

Paul