Two arrays: return only values that exist in both arrays?

[Joshua Muheim]

Hi all

a = [ne, :two, :three, :six]
b = [:two, :four, :five: six]

I want to extract the values of two arrays which exist in both ones (a
and b):

# => [:two, :six]

Does there exist a method for this?

Thanks
Josh

 

[Dejan Dimic]

Hi all

a = [ne, :two, :three, :six]
b = [:two, :four, :five: six]

I want to extract the values of two arrays which exist in both ones (a
and b):

# => [:two, :six]

Does there exist a method for this?

Thanks
Josh

Try
a&b

Dima

 

[Victor Reyes]

Note: parts of this message were removed by the gateway to make it a legal Usenet post.

How about the elements that are in one but not the other array?

Where are these methods documented?

Thank you

Victor

Hi all

a = [ne, :two, :three, :six]
b = [:two, :four, :five: six]

I want to extract the values of two arrays which exist in both ones (a
and b):

# => [:two, :six]

Does there exist a method for this?

Thanks
Josh

Try
a&b

Dima

 

[Joshua Muheim]

Thanks! But right - where are they documented?

 

[Garret Kelly]

You're looking for "a - b", in that case.

http://ruby-doc.org/core/classes/Array.html

Hope that helps.

How about the elements that are in one but not the other array?

Where are these methods documented?

Thank you

Victor

Hi all

a = [ne, :two, :three, :six]
b = [:two, :four, :five: six]

I want to extract the values of two arrays which exist in both ones (a
and b):

# => [:two, :six]

Does there exist a method for this?

Thanks
Josh

Try
a&b

Dima

 

[Marcin Raczkowski]

Thanks! But right - where are they documented?

in ruby-doc

 

[Garret Kelly]

http://ruby-doc.org/core/classes/Array.html#M002235

--Garret

 

[Victor Reyes]

Note: parts of this message were removed by the gateway to make it a legal Usenet post.

Thank you

You're looking for "a - b", in that case.

http://ruby-doc.org/core/classes/Array.html

Hope that helps.

How about the elements that are in one but not the other array?

Where are these methods documented?

Thank you

Victor

Hi all

a = [ne, :two, :three, :six]
b = [:two, :four, :five: six]

I want to extract the values of two arrays which exist in both ones (a
and b):

# => [:two, :six]

Does there exist a method for this?

Thanks
Josh
--
Posted viahttp://www.ruby-forum.com/.

Try
a&b

Dima

 

[Dejan Dimic]

Note: parts of this message were removed by the gateway to make it a legal Usenet post.

Thank you

You're looking for "a - b", in that case.

Hope that helps.

How about the elements that are in one but not the other array?
Where are these methods documented?
Thank you
Victor
Hi all
a = [ne, :two, :three, :six]
b = [:two, :four, :five: six]
I want to extract the values of two arrays which exist in both ones (a
and b):
# => [:two, :six]
Does there exist a method for this?
Thanks
Josh
--
Posted viahttp://www.ruby-forum.com/.
Try
a&b
Dima

Programming Ruby
The Pragmatic Programmer's Guide

class Array
instance methods
& arr & anOtherArray -> anArray

Set Intersection---Returns a new array containing elements common to
the two arrays, with no duplicates.

[ 1, 1, 3, 5 ] & [ 1, 2, 3 ] >> [1, 3]