Re: colon pair confusion

>> On Tue, Nov 18, 2025 at 9:45 PM ToddAndMargo via perl6-users <perl6- 
>> [email protected] <mailto:[email protected]>> wrote:
>> 
>>     Hi All,
>> 
>>     I am a bit confused as to what colon pairs are actually doing:
>> 
>>     [0] > my $y=:abc;
>>     abc => True
>>     Why is this True and not Nil?
>> 
>> 
>>     [1] > my $y=:abc(123);
>>     abc => 123
>>     This I get.
>> 
>> 
>>     [2] > my $y=:abc();
>>     abc => ()
>>     Why is this () and not Nil?
>> 
>> 
>>     [3] > my $y=:abc(Nil);
>>     abc => Nil
>>     This I get
>> 
>> 
>>     Yours in Confusion,
>>     -T
>> 

On 11/18/25 11:29 PM, Sean McAfee wrote:
> It's all spelled out here: https://docs.raku.org/language/ 
> glossary#Adverbial_pair <https://docs.raku.org/language/ 
> glossary#Adverbial_pair>
> 
> Notice in particular that :foo means :foo(True) and :!foo 
> means :foo(False).  Also see that
> 
> [...] other circumfix operators with their usual semantics can be used 
> for stating the value, e.g. |:foo[…]| for an array and |:foo{…}| for a 
> hash or even a |Block|.
> 
> Therefore :foo() means a Pair whose key is the string "foo" and whose 
> value is the empty list.  Compare with :foo(1, 2, 3) which is the same 
> as foo => (1, 2, 3).
> 

Thank you!

So no Nil.  <sniff, sniff> :'(