On Mon, Dec 27, 2010 at 18:49, Daniel Carrera <dcarr...@gmail.com> wrote:
snip
> That's cool. Thanks. I notice it works on numbers and string literals:
> "hello".WHAT # Str()
> 3.WHAT # Int()
> 3.3.WHAT # Rat()
> pi.WHAT # Num()
> (1+3i).WHAT # Complex()
>
> But it seems to give very inconsistent results when applied to functions:
> print.WHAT # Bool()
> say.WHAT # [blank]
> sin.WHAT # [error]
snip
That is because you are calling the WHAT on the function's return
value, not on the function itself. For instance,
{ 5 }().WHAT;
{ "foo" }().WHAT;
will retrun Int() and Str() because that is what those lambdas return, but
{ 5 }.WHAT;
returns Block(), because that is what it is. Similarly,
sub f { 5 }
&f.WHAT;
returns Sub(), and
&say.WHAT
returns Multi() because that is what they are.
snip
>> This might not have helped you had you not realized that {%matches{$p1}++}
>> is a term. However, if you keep in mind that TTIAR is always a syntax error
>> in Perl6, then if your code is compiling, whatever is between ?? and !! must
>> be a single term.
>>
>> It's really the TTIAR thing that makes reading Perl6 so incredibly
>> predictable, I think.
>
>
> What is TTIAR?
snip
It is an error to have Two Terms In A Row.
--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
