Java/C# "interface" in Ruby ?

[Peter Fitzgibbons]

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Hello all,

This is a newbie question.
Is there anything in Ruby that is equivalent to the Java/C# "interface".


Peter J. Fitzgibbons
Applications Manager
Lakewood Homes - "The American Dream Builder"(r)
(e-mail address removed)
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[Austin Ziegler]

This is a newbie question.
Is there anything in Ruby that is equivalent to the Java/C# "interface".

Depends. The standard answer is "thank ghu, no." There are some
third-party implementations on the RAA, but you don't need them.

Mixins work better than "interfaces" ever will.

-austin
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Austin Ziegler * (e-mail address removed)
* Alternate: (e-mail address removed)

 

[Robert Klemme]

Depends. The standard answer is "thank ghu, no." There are some
third-party implementations on the RAA, but you don't need them.
Agree.

Mixins work better than "interfaces" ever will.

I beg to differ here: mixin modules provide implementaitions while
interfaces just define method signatures. IMHO mixin modules are better
compared to multiple inheritance or reuse.

Kind regards

robert

 

[James Edward Gray II]

I beg to differ here: mixin modules provide implementaitions while
interfaces just define method signatures. IMHO mixin modules are
better
compared to multiple inheritance or reuse.

Yeah, I have to agree here. To me, the Ruby equivalent of interfaces
would be Duck Typing.

James Edward Gray II

 

[Daniel Berger]

Yeah, I have to agree here. To me, the Ruby equivalent of interfaces
would be Duck Typing.

James Edward Gray II

I released "interface" on the RAA, mainly as proof that interfaces
*could* be done in Ruby if you really wanted them. Note that I've never
used it in actual production code.

The *only* Ruby library I've seen so far that *might* benefit from an
interface is DBI, where you want to ensure that all of the DBD's have a
common set of methods.

Even then, it's easy enough to simply document what methods should be
defined and what they should do, then add a generic test suite which DBD
writers can use to ensure correctness.

Regards,

Dan

 

[Florian Groß]

Is there anything in Ruby that is equivalent to the Java/C# "interface".

There is also http://ruby-contract.rubyforge.org/ which tries to do this
in a more Rubyish way. Perhaps it will be of interest to you.