Substring of text variable

Question

I have a string in the variable text. If I do text[0 .. 29] I get the first 30 characters. What if I want the last part of string which I don't know the length?

Mikita Belahlazau · Accepted Answer · 2012-04-26 11:40:11Z

6

Use test[-30..-1] Doc: http://www.ruby-doc.org/core-1.9.3/String.html#method-i-5B-5D

answered Apr 26, 2012 at 11:40

Mikita Belahlazau

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EricM · Accepted Answer · 2012-04-26 11:45:13Z

1

Use negative indices:

a = "qwertyuiop"
a[-3..-1]
"iop"

answered Apr 26, 2012 at 11:45

EricM

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SwiftMango · Accepted Answer · 2012-04-26 12:52:38Z

1

Use test[30..-1], which makes more sense to me than test[-30,-1]

answered Apr 26, 2012 at 12:52

SwiftMango

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michael_wu · Accepted Answer · 2012-04-26 13:30:43Z

1

If you have activesupport/rails, you can also pass the number of characters to last.

text.last(30)

edited Apr 26, 2012 at 13:30

michael_wu

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answered Apr 26, 2012 at 11:40

Soundar Rathinasamy

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1 Comment

michael_wu Over a year ago

This solution requires activesupport (rails). Thus the downvotes I guess.

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