user0721090601
2020-11-28 16:51:20
Actually, unlike I said in my previous you can use conditions in where clauses without problem, you just need to encase them in braces:
role Zipi[$condition] {
has $.floor is rw where {$_ ~~ $condition}
method foo($x) { $!floor = $x }
}
class A does Zipi[2 < * < 5] {
method bar($x) { $.floor = $x }
}
#my $a = A.new( floor => 10); # error
my $a = A.new( floor => 4); # OK
#$a.foo(10); # error
$a.foo(3); # OK
#$a.bar(0); # error
$a.bar(4); # OK
#$a.floor = 9; # error
$a.floor = 3; # OK
That should cover all of the assignment types
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This does not require high magic, so sorry, @raiph, I've chosen it. Thanks!
.oO ( I'm glad @jj got & accepted this solution and not mine!) What?!? Who said that? I encountered the same issue with
whereclauses when using*but found it worked using braces and~~. But I didn't realize that that's what you meant by "I tried using anonymouswhereclauses". Maybe you read my answer and saw that option and it inspired the above? In which case my aspirational "step in the right direction" applies, and in turn the sense that it might inspire us all to stay ahead of dreaded lurchers, and know we are in this together, and share the desire to spread what we have... ;)@raiph: ps, check out reddit — would love some feedback on my post there re CLDR (def value your input/observations)
Heh. I just posted a comment there, then visited here and have just seen your comment for the first time. Maybe it's a zombie power that I read your mind without realizing I'd done so?
@raiph I'm not so totally sure about this now. At the end of the day, it needs runtime constants. It's a bit more flexible. So will take a second look at your answer, and maybe switch again.