Questions tagged [multidispatch]
7 questions
14
votes
1 answer
Where did my Perl 6 operator go after I defined a more specific multi?
I'm playing with this little thing where a set can act as its complement by flipping around the tests. In order to make that work, I create special versions of the membership operators.
class Complement {
has $.set;
}
multi infix:<∈> ( $a,…
brian d foy
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10
votes
2 answers
have perl6 invoke the right multi sub specialized by subtype(subset)
I have a type hierarchy constructed with perl6's subset command and some multi subs specialized on these type. How to give the highest precedence to the sub specialized by the most narrow subtype when multi dispatch happens?
Here is the simplified…
lovetomato
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4
votes
3 answers
How does Perl 6's multi dispatch decide which routine to use?
Consider this program where I construct an Array in the argument list. Although there's a signature that accepts an Array, this calls the one that accepts a List:
foo( [ 1, 2, 3 ] );
multi foo ( Array @array ) { put "Called Array @ version" }
multi…
brian d foy
- 121,466
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2
votes
1 answer
How to design an "Awaitable" base class?
The C++ standard library in many places offers a kind of "awaitable" API: e.g. std::future and std::condition_variable can instantly "try" to get their value, "wait" undefinitely for their value, "wait_for" a certain std::chrono::duration, or…
Andreas T
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2
votes
1 answer
python - lost self while decorating class multimethods
I am trying to implement a multimethod approach based on this article http://www.artima.com/weblogs/viewpost.jsp?thread=101605. There are two differences from this approach:
I only need to look at the first argument of the multimethod, so no need…
kurtgn
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1
vote
0 answers
Emulating multiple dispatch in S3 (for 3 signature arguments)
I'm aware of the general ins and outs of the different OO systems in R and I'm all for staying in S3 whenever/as long as I can.
However, the need for multiple dispatch keeps haunting me in professional projects and kept pulling me into S4 in the…
Rappster
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0
votes
0 answers
How to resolve compilation error in multidispatch?
I am trying multipledispatch but getting compilation error. I have successfully installed multipledispatch by : pip3 install multipledispatch in windows but getting compilation error. Below is the code snap
from multipledispatch import…
subhashis
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