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Coercion type applied via role parameter fails to multi-dispatch #3708

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p6rt opened this issue Feb 28, 2015 · 3 comments
Open

Coercion type applied via role parameter fails to multi-dispatch #3708

p6rt opened this issue Feb 28, 2015 · 3 comments

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@p6rt
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@p6rt p6rt commented Feb 28, 2015

Migrated from rt.perl.org#123953 (status was 'open')

Searchable as RT123953$

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@p6rt p6rt commented Feb 28, 2015

From @skids

(10​:19​:08 AM) skids​: m​: role g[​::T $t] { multi method foo (T $a) { "OHAI".say }; multi method foo($a) { "ONOES".say }; }; g[Int(Str)].new.foo("100")
(10​:19​:09 AM) camelia​: rakudo-moar 35de75​: OUTPUT«ONOES␤»
(10​:20​:59 AM) jnthn​: Bah, I knew somebody would try that :P
(10​:21​:03 AM) vendethiel​: *g*
(10​:21​:31 AM) jnthn​: I only did coercion types so far sufficient that we could migrate away from the deprecated "as" in sigs.
(10​:21​:50 AM) jnthn​: That one should be possible to make work, anyways. :)
(10​:22​:08 AM) jnthn​: It's just a bit fiddly.

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@p6rt p6rt commented Dec 3, 2017

From @MasterDuke17

On Sat, 28 Feb 2015 07​:45​:31 -0800, bri@​abrij.org wrote​:

(10​:19​:08 AM) skids​: m​: role g[​::T $t] { multi method foo (T $a) {
"OHAI".say }; multi method foo($a) { "ONOES".say }; };
g[Int(Str)].new.foo("100")
(10​:19​:09 AM) camelia​: rakudo-moar 35de75​: OUTPUT«ONOES␤»
(10​:20​:59 AM) jnthn​: Bah, I knew somebody would try that :P
(10​:21​:03 AM) vendethiel​: *g*
(10​:21​:31 AM) jnthn​: I only did coercion types so far sufficient that
we could migrate away from the deprecated "as" in sigs.
(10​:21​:50 AM) jnthn​: That one should be possible to make work,
anyways. :)
(10​:22​:08 AM) jnthn​: It's just a bit fiddly.

Still the same​:
$ perl6 -e 'role g[​::T $t] { multi method foo (T $a) { "OHAI".say }; multi method foo($a) { "ONOES".say }; }; g[Int(Str)].new.foo("100")'
ONOES
$ perl6 --version
This is Rakudo version 2017.11-44-g4a32089fd built on MoarVM version 2017.11-20-gd23f5ca16
implementing Perl 6.c.​:

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@p6rt p6rt commented Dec 3, 2017

The RT System itself - Status changed from 'new' to 'open'

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