which method do I have to override?

[Boris Glawe]

Hello,

I've an array filled with objects. These objects are instances of my own classes.

Which methods do I have to override in my classes that the array's uniq,
sort,... methods can successfully compare two of my objects?

I've tried to override the == method and the <=> method, but it didnt' work

thanks in advance

Boris

 

[Trans]

#<=> should be the main one, but did you 'include Comparable'?

T.

 

[Ryan Leavengood]

Hello,

I've an array filled with objects. These objects are instances of my own = classes.

Which methods do I have to override in my classes that the array's uniq,
sort,... methods can successfully compare two of my objects?

I've tried to override the =3D=3D method and the <=3D> method, but it did=

nt' work

Hi Boris,

For sort you just need to override <=3D>, for uniq to need to override hash=

 

[Boris Glawe]

#<=> should be the main one, but did you 'include Comparable'?

T.

No I haven't included Comparable. I'll try that! Thanks

Boris

 

[Robert Klemme]

Hi Boris,

For sort you just need to override <=>, for uniq to need to override
hash=

.... and #eql?

robert

 

[Eric Hodel]

Hello,

I've an array filled with objects. These objects are instances of
my own classes.

Which methods do I have to override in my classes that the array's
uniq, sort,... methods can successfully compare two of my objects?

I've tried to override the == method and the <=> method, but it
didnt' work

#uniq works via a Hash, so you need #hash and #eql?