On Tue, Dec 28, 2010 at 12:38 AM, Mason Kramer <[email protected]>wrote:
> One method-like thing that's come in handy for me as I've tinkered with the
> language is .WHAT.
>
> { ... }.WHAT
> Block()
>
> AFAIK, you can use .WHAT on *any* term, because every term in Perl6 is an
> object that is implemented by a class, and every class has a corresponding
> type object (which is what .WHAT returns for you).
>
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]
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?
Daniel.
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