From: Gunther Diemant <g.diemant@...>
Date: 2011-07-01T20:14:16+09:00
Subject: Re: How to order Structs based on two fields

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Try this: array.sort { |x,y| x.a =3D=3D y.a ? x.b <=3D> y.b : x.a <=3D> y.a=
 }
Or overide the <=3D> method in your struct.

2011/7/1 I=F1aki Baz Castillo <ibc@aliax.net>

> 2011/7/1 I=F1aki Baz Castillo <ibc@aliax.net>:
> > I expected that the following could work:
> >
> >  array.sort_by{|entry| entry.a or entry.b}
> >
> > but it generates:
> >
> >   [kk1, kk2, kk3, kk4]
> >
> > so obviously it does not work. I'm not very used to Enumerable.sort_by
> > method, any tip please?
>
> Maybe it would be better to use "class KK" rather than an struct, and
> then define <=3D> method for KK class (and include Enumerable module)?
>
> --
> I=F1aki Baz Castillo
> <ibc@aliax.net>
>
>

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