Does Ruby allow to return a slice of an array?

Question

Perl allows you to use the '..' operator to return a slice from an array. So if I wanted cells 4 through 8 from an array, I could this:

sample_array[4..8]

And if I assigned that to a new array, it would only have those 5 cells. Is there an operator like this for Ruby?

Thanks.

It can also be done as sample_array[4,8], which is actually faster. — Jesse Jashinsky, Commented Aug 26, 2010 at 22:55
@Jesse sample_array[4,8] is different from sample_array[4..8]. The first one starts at index 4 and grabs the next 8 indexes. The second one gets items at index 4 through 8. — Dty, Commented Apr 7, 2011 at 16:22

AboutRuby · Accepted Answer · 2010-08-26 22:19:47Z

1

You answered your own question. The Array#[] method can take a range, and return slices of that array.

answered Aug 26, 2010 at 22:19

AboutRuby

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Douglas · Accepted Answer · 2010-08-26 22:53:01Z

1

You seem to have answered your own question, but fwiw, here is the Array#[] documentation which shows some more possibilities.

answered Aug 26, 2010 at 22:53

Douglas

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Nikita Rybak · Accepted Answer · 2010-08-26 22:15:51Z

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Hmm, wouldn't trying it yourself be faster than asking?

Yes, there's such operator. Working exactly like you described.

answered Aug 26, 2010 at 22:15

Nikita Rybak

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3 Answers 3