Itterate over an Array Extracting Data

Ruby
1

So I have the following array

people = [“Employee 1”, “Secretary”, “Male”, “54”]
[“Employee 2”, “Manager”, “Female”, “44”]
[“Employee 3”, “Chef”, “Female”, “22”]

I would like to iterate over this array pulling out just the ages. How
can I do this?

I tried the following:

x = 0
while x < people.length
puts people[x][3]
x += 1
end

How could I put the results into an array? IRB doesn’t like my code.

2

On Thu, Sep 17, 2009 at 4:34 AM, Daniel R.
[email protected]wrote:

people = [“Employee 1”, “Secretary”, “Male”, “54”]
[“Employee 2”, “Manager”, “Female”, “44”]
[“Employee 3”, “Chef”, “Female”, “22”]

people # => [“Employee 1”, “Secretary”, “Male”, “54”]

#you (presumably) wanted an array of arrays, it would need to look like
the
one below
people = [[“Employee 1” , “Secretary” , “Male” , “54”],
[“Employee 2” , “Manager” , “Female” , “44”],
[“Employee 3” , “Chef” , “Female” , “22”]]

ages = people.map{|p| p[3] }

ages # => [“54”, “44”, “22”]

people # => [[“Employee 1”, “Secretary”, “Male”, “54”], [“Employee 2”,
“Manager”, “Female”, “44”], [“Employee 3”, “Chef”, “Female”, “22”]]

3

x = 0
while x < people.length
puts people[x][3]
x += 1
end

How could I put the results into an array? IRB doesn’t like my code.

people = [[“Employee 1”, “Secretary”, “Male”, “54”],[“Employee 2”, “Manager”, “Female”, “44”],[“Employee 3”, “Chef”, “Female”, “22”]]
=> [[“Employee 1”, “Secretary”, “Male”, “54”], [“Employee 2”,
“Manager”, “Female”, “44”], [“Employee 3”, “Chef”, “Female”, “22”]]

ages = people.collect{|person| person[3]}
=> [“54”, “44”, “22”]

Regards,
Rimantas

4

On Thu, Sep 17, 2009 at 4:34 AM, Daniel R.
[email protected]wrote:

Sorry for the improper spacing, I’m on my Windows computer, forgot that
SciTe doesn’t use monospaced font by default.

5

people.each {|person| puts person[3]}

PS I had to enter your array differently - what you typed here didn’t
work.

people = [[“Employee 1”, “Secretary”, “Male”, “54”],
[“Employee 2”, “Manager”, “Female”, “44”],
[“Employee 3”, “Chef”, “Female”, “22”]]

On Thu, Sep 17, 2009 at 10:34 AM, Daniel R. [email protected]
wrote:

–
Paul S.
http://www.nomadicfun.co.uk

[email protected]

6

Josh C. wrote:

On Thu, Sep 17, 2009 at 4:34 AM, Daniel R.
[email protected]wrote:

Sorry for the improper spacing, I’m on my Windows computer, forgot that
SciTe doesn’t use monospaced font by default.

Thanks for everyone’s help.

7

On 17 sep 2009, at 11.34, Daniel R. wrote:

So I have the following array

people = [“Employee 1”, “Secretary”, “Male”, “54”]
[“Employee 2”, “Manager”, “Female”, “44”]
[“Employee 3”, “Chef”, “Female”, “22”]

Here you have THREE arrays, of which to are not assigned ANYWHERE.
You forgot the outer brackets and the commans between elements of the
outer array.

How could I put the results into an array? IRB doesn’t like my code.

Posted via http://www.ruby-forum.com/.

The three things an undertaker should never say to a client:
-Nice doing business with you.
-Welcome back.
-Have a nice day. (The King of ID)

8

On Thu, Sep 17, 2009 at 6:34 PM, Daniel R. [email protected]
wrote:

x = 0
while x < people.length
puts people[x][3]
x += 1
end

How could I put the results into an array? IRB doesn’t like my code.

people = [[“Employee 1”, “Secretary”, “Male”, “54”],
[“Employee 2”, “Manager”, “Female”, “44”],
[“Employee 3”, “Chef”, “Female”, “22”]]

p people.transpose[3]

Harry