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Concatenating array item with string

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  #1  
Old October 16th, 2007, 11:37 AM
karym6 karym6 is offline
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Concatenating array item with string
Hi All,

I have a (possibly) unique problem, I have an array of values that I would like to concatenate with a string.

eg;

servers=['server1','server2','server2']
path = "/some_path"

I would like to be able to concatenate server[i] with path in order to create a complete path. I have tried server[i] + path, however ruby doesnt allow this at all.

Can some one let me know if this is possible at all?

Cheers
-
Karym6
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  #2  
Old October 16th, 2007, 11:59 AM
[H4z3] [H4z3] is offline
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Code:
servers = ["server1", "server2", "server3"]
path = "/"
servers.each { |s| path << s }
 
# path => /server1server2server3


Or perhaps you mean..

Code:
servers = ["server1", "server2", "server3"]
path = "/"
servers.each { |s| path << s + "/" }
# path => /server1/server2/server3/


You can use += .. or <<
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  #3  
Old October 16th, 2007, 12:05 PM
L7Sqr L7Sqr is offline
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Code:
irb(main):001:0> s = ['server1', 'server2', 'server3']
=> ["server1", "server2", "server3"]
irb(main):002:0> pth = "/path"
=> "/path"
irb(main):003:0> s.collect { |i| pth + "/" + i }.each { |i| puts i }
/path/server1
/path/server2
/path/server3
=> ["/path/server1", "/path/server2", "/path/server3"]
irb(main):004:0> s.collect { |i| i + pth }.each { |i| puts i }
server1/path
server2/path
server3/path
=> ["server1/path", "server2/path", "server3/path"]
irb(main):005:0>

I'm not sure what isnt working for you... Could you post a snippet of teh problem area so that we may see that it is not a syntax error?
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-- I'll provide you with reference points; if they dont work, refer to something else.

If you process text, this might make your life a little easier.
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  #4  
Old October 16th, 2007, 12:13 PM
[H4z3] [H4z3] is offline
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Oh, I was thinking he wanted to make a complete path from all of the values..

+ is the concatenation operator

<< is combined assignment and concatenation
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  #5  
Old October 16th, 2007, 12:57 PM
karym6 karym6 is offline
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Code:
puts "Checking to see if all sites have home pages"
puts "Now checking..."
servers = ['server1','server2','server3','server4','server5']
office_urls = CSV.read 'C:\\ReleaseScripts\\tests\\officeURLs.csv'
rpb_urls = CSV.read 'C:\\ReleaseScripts\\tests\\Burls.csv'
supermarket_urls = CSV.read 'C:\\ReleaseScripts\\tests\\marketURLs.csv'
businessclub_urls = CSV.read 'C:\\ReleaseScripts\\tests\\ClubURLs.csv'
office_urls.each {|path| 
servers.each  |s| path << s + "URL" 
puts path
}
puts "============================================================"


currently, it doesnt work as you will see - I have been trying out some of the suggestions above.

Ideally, I would like to have <server><path> printed on one line.

Cheers
-
Karym6
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  #6  
Old October 16th, 2007, 01:09 PM
karym6 karym6 is offline
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Guys, cracked it - coudnt have done it with out your guidance

I acheived my aim with:

Code:
office_urls.each {|path| servers.collect { |i| i + "#{path}" }.each { |i| puts i }}
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