On 2019-12-15 12:30, Simon Proctor wrote:
https://docs.raku.org/language/optut
This should cover it.
On Sun, 15 Dec 2019, 20:17 ToddAndMargo via perl6-users,
<perl6-us...@perl.org <mailto:perl6-us...@perl.org>> wrote:
On 2019-12-15 02:56, Tobias Boege wrote:
> On Sat, 14 Dec 2019, ToddAndMargo wrote:
>> What am I doing wrong here?
>>
>>> multi prefix:<√> (Cool:D $x) { $x.sqrt }
>> &prefix:<√>
>>
>>> say √2
>> ===SORRY!===
>> Argument to "say" seems to be malformed
>> ------> say⏏ √2
>> Bogus postfix
>
> If this is inside the REPL, it's not your fault. It's a known issue:
> https://github.com/rakudo/rakudo/issues/2245
>
> Regards,
> Tobias
>
Hi Tobias,
Well now, its really not me? That is an odd feeling.
For my keeper on the subject, I searched the documentation
for "prefix:" and found a gazillion entries. A lot of
how use it other things with it, but nothing specifically
for "prefix:". Do you know if one exists?
Many thanks,
-T
Hi Simon,
I now have my reference entered on my keeper.
Thank you!
Reference(s):
https://docs.raku.org/language/optut
# Alternatively we could create a more
# general operator to sum n numbers
sub prefix:<Σ>( *@number-list ) {
[+] @number-list
}
say Σ (13, 16, 1); # OUTPUT: «30»
I have to say that Tobias is a lot better at explaining it.
So I included his stuff too.
-T
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