I guessed this answer. :) It makes it extra typing and some linenoise. So, I
wouldn't be really happy about it.
Use of `with` would be less cumbersome, actually. So `with $s ~~ /.../ {
.<word> }`. Or `$s ~~ /.../ andthen .<word>`. The "extra typing issue" is not
gone in this case, but the code clarity doesn't suffer.
Best regards,
Vadim Belman
> On Dec 30, 2022, at 5:22 AM, Elizabeth Mattijsen <[email protected]> wrote:
>
> if $s ~~ /$<word>=[\w+]/ -> $/ { say $<word> }
>
>> On 30 Dec 2022, at 03:54, Vadim Belman <[email protected]> wrote:
>>
>> Optimizations, yes... But then, how could we not use code like `if $s ~~
>> /$<word>=[\w+]/ { say $<word> }`?
>>
>> Speaking of the subject itself, I don't remember how sequences are actually
>> implemented in details, but most likely the regex is processed inside the
>> sequence iterator which owns the $/ used by the regex eventually.
>>
>> Best regards,
>> Vadim Belman
>>
>>> On Dec 28, 2022, at 12:49 PM, Elizabeth Mattijsen <[email protected]> wrote:
>>>
>>> That's because it at one time was decided that smart-match would set $/ in
>>> the caller's scope. Which is a pain for implementation and optimizations.
>>> I would be very much in favour of getting rid of that "feature", fwiw.
>>>
>>>> On 28 Dec 2022, at 18:45, Sean McAfee <[email protected]> wrote:
>>>>
>>>> But if a sequence has its own $/, why does * ~~ /9/ set $/?
>>>>
>>>> Actually it's not just sequences, as a little more experimentation showed:
>>>>
>>>> [0] > first /9/, ^Inf
>>>> 9
>>>> [1] > $/
>>>> Nil
>>>> [2] > grep /9/, ^10
>>>> (9)
>>>> [3] > $/
>>>> Nil
>>>>
>>>> The * ~~ "trick" sets $/ in these cases too.
>>>>
>>>>
>>>> On Wed, Dec 28, 2022 at 12:01 PM Elizabeth Mattijsen <[email protected]>
>>>> wrote:
>>>> This isn't specific to the REPL:
>>>>
>>>> $ raku -e 'say 1 ... /9/; say $/'
>>>> (1 2 3 4 5 6 7 8 9)
>>>> Nil
>>>>
>>>> I can only assume that the sequence has its own scope for $/, and thus
>>>> isn't visible outside of it.
>>>>
>>>>
>>>> Liz
>>>>
>>>>> On 28 Dec 2022, at 16:47, Sean McAfee <[email protected]> wrote:
>>>>>
>>>>> In a fresh 2022.12 Raku REPL, when the endpoint of a sequence is a Regex,
>>>>> the $/ variable seems not to be set:
>>>>>
>>>>> [0] > 1 ... /9/
>>>>> (1 2 3 4 5 6 7 8 9)
>>>>> [1] > $/
>>>>> Nil
>>>>>
>>>>> If I match more explicitly using a WhateverCode, it works:
>>>>>
>>>>> [2] > 1 ... * ~~ /9/
>>>>> (1 2 3 4 5 6 7 8 9)
>>>>> [3] > $/
>>>>> ｢9｣
>>>>>
>>>>> Is this the intended behavior, or a bug?
>>>>>
>>>>
>>>
>>
>
