Array returning Fixnum instead of String

Question

I have an array of arrays similar to:

[["Rosalind_0498", "AAATAAA"], ["Rosalind_2391", "AAATTTT"]]

I I want to get the letter of the first array's second element I would expect to use array[0][1][-1]

This instead of returning 'A' returns 65, it's probably something simple to do with ruby arrays but I'm not sure why it is happening, can someone point me in the right direction?

UPDATE:

Is there a better way to do it then array[0][1][-1..-1]?

I'm using ruby 1.8.7 (2010-12-23 patchlevel 330) [i386-mingw32] — Lifeweaver
– Lifeweaver, Commented Apr 9, 2013 at 19:39

Anthony Alberto · Accepted Answer · 2013-04-09 19:36:05Z

3

Prior to Ruby 1.9, accessing a string char with [] would get you the ascii value of this char.

Just use this in ruby 1.8:

array[0][1][-1].chr

answered Apr 9, 2013 at 19:36

Anthony Alberto

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1 Comment

Lifeweaver Over a year ago

Thanks I knew there had to be a better way!

ennuikiller · Accepted Answer · 2013-04-09 19:34:43Z

0

what version of ruby are you using?

2.0.0p0 :001 > a = [["Rosalind_0498", "AAATAAA"], ["Rosalind_2391", "AAATTTT"]]
 => [["Rosalind_0498", "AAATAAA"], ["Rosalind_2391", "AAATTTT"]]
2.0.0p0 :002 > a[0][1][0]
 => "A"

answered Apr 9, 2013 at 19:34

ennuikiller

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Comments

Arup Rakshit · Accepted Answer · 2013-04-09 19:51:00Z

0

You can try the below:

p [["Rosalind_0498", "AAATAAA"], ["Rosalind_2391", "AAATTTT"]].flatten[1].chr #=> "A"

answered Apr 9, 2013 at 19:51

Arup Rakshit

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5 Comments

Lifeweaver Over a year ago

I'm afraid that when I try this I get: NoMethodError: undefined method chr' for "AAATAAA":String

Arup Rakshit Over a year ago

which version of ruby you are using. I am using Ruby 2.0.0

Lifeweaver Over a year ago

But I'm probably going to use Anthony Alberto's solution. If you look up in the comments I am using Ruby 1.8.7

Arup Rakshit Over a year ago

@JoshD See here 1.8.7 not supported chr method.

Lifeweaver Over a year ago

That is weird since the .chr method works for me but I have: ruby 1.8.7 (2010-12-23 patchlevel 330) [i386-mingw32] maybe it's the patch level or something.

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