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Guest4 The documentation for 'reduce' seems to imply it will simply return the sole item of a list when given a list of length 1, but I always seem to get a "too few positionals passed" error when I try. It seems to work with some built-ins, like &infix:<+>, but not with anything else I try. Is the documentation wrong? 00:47
[Coke] can you give an example that fails? 01:24
m: say reduce &infix:<->, (1,);
camelia 1
[Coke] if your sub only takes 2 args, it can't take just 1, so this will fail: 01:25
m: sub j($a, $b) { $a * $b }; say reduce &j, (1,);
camelia Too few positionals passed; expected 2 arguments but got 1
in sub j at <tmp> line 1
in block <unit> at <tmp> line 1
[Coke] m: sub j($a, $b=1) { $a * $b }; say reduce &j, (1,); 01:26
camelia 1
[Coke] but since the second arg has a default there, that will work.
Guest4: hope that helps.
Guest4 Perhaps I am reading too much into the documentation. I was hoping I could avoid a bunch of length checks in my code and reduce would do it for me. 01:31
[Coke] are you trying to reduce with a builtin or your own 2-arg sub? 01:32
Guest4 My own. Not dissimilar to your second example. 01:34
[Coke] ok. the core ones do this not by having a single sub doing 1 and 2 arg versions, but with a multi sub. 01:35
e.g. there is a multi sub infix:<+>($x) { $x.Numeric } 01:36
That's probably the easiest way to do it. Can you point me at the doc URL you were reading? I can add a note to that effect.
Guest4 docs.raku.org/routine/reduce 01:37
It never occurred to me to try a mutli sub. Thanks for the help. 01:45
[Coke] I think the text there is incorrect, actually, it says: 01:49
If list contains just a single element, the operator is applied to that single element if possible; if not, it returns the element itself.
I'll rework that sentence to mention the multi (and double check the reduce implemenation that this isn't an error) 01:50
Guest4: github.com/Raku/doc/issues/4816 01:51
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Voldenet I say docs about sleep and one thing is peculiar to me - there exists Duration (that sleep accepts) but Duration can't be initialized with minutes, hours etc. 09:46
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Voldenet it can be done easily so maybe it could be accepted form of .new 09:51
m: sub duration { my $n = DateTime.new(0); $n.later(|%_) - $n.$_ }; say duration(:2days); say duration :3hours; 09:52
camelia 172800
10800
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lizmat interesting idea 09:59
I guess it makes sense up to :weeks 10:00
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Voldenet Duration having units overall makes sense, just maybe not when combined with sleep 10:05
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lizmat m: sleep Duration.new(1); say now - INIT now 10:06
camelia 1.001584075
lizmat think it works fine?
Voldenet yeah, sleep accepts the duration 10:07
duration gets converted into numeric probably 10:08
either way, C# has similar class (it uses ticks internally) and it accepts `(d?, h,m,s)` as .new (and has ToString for that): github.com/microsoft/referencesour...imespan.cs 10:10
lizmat actually, Duration nowadays store nanoseconds
*stores
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Voldenet tick in TimeSpan context is 100ns I think, so storing ns is more precise 10:16
+ can use nanosleep directly
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rmv Hi everyone, trying to upload my first zef package. Is the server down? fez upload failing with a bunch of timeouts... 10:25
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lizmat confirmed :-( 10:29
.tell tonyo looks like fez is having issues
tellable6 lizmat, I'll pass your message to tonyo
lizmat rmv: only thing I can say is: please try again later 10:30
and thank you for creating your first zef package! :-)
rmv no worries, I'll try later! thanks
Voldenet m: use MONKEY-TYPING; augment class Duration { multi method new { my $n = DateTime.new(0); $n.later(|%_) - $n.$_ }; method X { self.polymod(60,60,24).&{my@p=$_; (@p.first(*!=0,:end,:k) // 0…0).map({ @p[$_].fmt("%02d")}).join(":") } } }; for (:2days, :3hours, :4minutes, :5seconds, 6) { Duration.new(|$_).X.say } 10:33
camelia 02:00:00:00
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Voldenet something like that is what I'd have in mind for additional .new and .Str, but if anyone is using Str then obviously it might stop working
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lizmat Voldenet: the logic in DateTime.later should probably be abstracted into Internals and then used for Duration as well 11:19
or make Duration.new canonical and use that in DateTime.later 11:22
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Voldenet I'm actually not sure, .later uses DateTime.move-by-unit or Date.move-by-unit which actually do operations on the storage 13:08
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Voldenet but in Duration case constants would be used to add to some base number 13:09
so Duration could implement it in more trivial way
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apogee_ntv Is fez working for everyone else? I'm just getting a hang when trying to run it with no output 17:56
to upload or login
rmv apogee_ntv: Had the same problem earlier. Seems to be down. 18:02
apogee_ntv F 18:03
Who do we ping to fix it? :D 18:04
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rmv lizmat pinged tonyo (irclogs.raku.org/raku/2026-06-20.html#10:29) 18:10
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apogee_ntv tonyo: Looks like fez upload is broken atm, has been for a few hours. 21:01
(rmv said you're the person to ping :D)
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