ruby - help need to convert an array to a specific type of array of arrays, duplicating the keys as [key,...
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-1
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I want to convert and array into a specific type of array of arrays.
array = ["Project", "Publication"]
into
array_of_arrays =[["Project", "Project"], ["Publication", "Publication"] ]
The array is not just limited to size two. Its a growing list , so looking for some function to convert it to array_of_arrays.
Appreciate any help.
ruby ruby-on-rails-3
asked Nov 15 at 16:51
user3586935
1
add a comment |
up vote
-1
down vote
favorite
I want to convert and array into a specific type of array of arrays.
array = ["Project", "Publication"]
into
array_of_arrays =[["Project", "Project"], ["Publication", "Publication"] ]
The array is not just limited to size two. Its a growing list , so looking for some function to convert it to array_of_arrays.
Appreciate any help.
ruby ruby-on-rails-3
asked Nov 15 at 16:51
user3586935
1
1
You can format your code by indenting it four spaces or by surrounding it with backticks. Typically, use the former for blocks of code, the latter for isolated bits of code within sentences. Also, if you select your code and click on{}it will all be indented four spaces. This is a pure-Ruby question so you should not have the Rails tag. Lastly, in Ruby we speak of methods (OOP-like), not functions.
– Cary Swoveland
Nov 15 at 17:47
add a comment |
up vote
-1
down vote
favorite
up vote
-1
down vote
favorite
I want to convert and array into a specific type of array of arrays.
array = ["Project", "Publication"]
into
array_of_arrays =[["Project", "Project"], ["Publication", "Publication"] ]
The array is not just limited to size two. Its a growing list , so looking for some function to convert it to array_of_arrays.
Appreciate any help.
ruby ruby-on-rails-3
asked Nov 15 at 16:51
user3586935
1
I want to convert and array into a specific type of array of arrays.
array = ["Project", "Publication"]
into
array_of_arrays =[["Project", "Project"], ["Publication", "Publication"] ]
The array is not just limited to size two. Its a growing list , so looking for some function to convert it to array_of_arrays.
Appreciate any help.
ruby ruby-on-rails-3
ruby ruby-on-rails-3
asked Nov 15 at 16:51
user3586935
1
asked Nov 15 at 16:51
user3586935
1
asked Nov 15 at 16:51
user3586935
1
asked Nov 15 at 16:51
user3586935
1
asked Nov 15 at 16:51
user3586935
1
1
1
You can format your code by indenting it four spaces or by surrounding it with backticks. Typically, use the former for blocks of code, the latter for isolated bits of code within sentences. Also, if you select your code and click on{}it will all be indented four spaces. This is a pure-Ruby question so you should not have the Rails tag. Lastly, in Ruby we speak of methods (OOP-like), not functions.
– Cary Swoveland
Nov 15 at 17:47
add a comment |
1
You can format your code by indenting it four spaces or by surrounding it with backticks. Typically, use the former for blocks of code, the latter for isolated bits of code within sentences. Also, if you select your code and click on{}it will all be indented four spaces. This is a pure-Ruby question so you should not have the Rails tag. Lastly, in Ruby we speak of methods (OOP-like), not functions.
– Cary Swoveland
Nov 15 at 17:47
1
1
You can format your code by indenting it four spaces or by surrounding it with backticks. Typically, use the former for blocks of code, the latter for isolated bits of code within sentences. Also, if you select your code and click on
{} it will all be indented four spaces. This is a pure-Ruby question so you should not have the Rails tag. Lastly, in Ruby we speak of methods (OOP-like), not functions.– Cary Swoveland
Nov 15 at 17:47
You can format your code by indenting it four spaces or by surrounding it with backticks. Typically, use the former for blocks of code, the latter for isolated bits of code within sentences. Also, if you select your code and click on
{} it will all be indented four spaces. This is a pure-Ruby question so you should not have the Rails tag. Lastly, in Ruby we speak of methods (OOP-like), not functions.– Cary Swoveland
Nov 15 at 17:47
add a comment |
2 Answers
2
active
oldest
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2
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def replicate(arr, n)
arr.map { |e| [e]*n }
end
replicate(["Project", "Publication"], 2)
#=> [["Project", "Project"], ["Publication", "Publication"]]
replicate(["Project", "Publication"], 3)
#=> [["Project", "Project", "Project"], ["Publication", "Publication", "Publication"]]
replicate([["ProjectA", "ProjectB"], "Publication"], 2)
#=> [[["ProjectA", "ProjectB"], ["ProjectA", "ProjectB"]], ["Publication", "Publication"]
answered Nov 15 at 17:41
Cary Swoveland
67k53865
add a comment |
up vote
0
down vote
This is something map can handle quite easily.
a = ["Project", "Publication"]
a.map{|x| [x,x]}
#=> [["Project", "Project"], ["Publication", "Publication"]]
edited Nov 15 at 17:08
engineersmnky
13.1k12137
answered Nov 15 at 17:03
Jeff Price
2,7991723
a.zip(a)will do the same thing :)
– engineersmnky
Nov 15 at 17:08
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
def replicate(arr, n)
arr.map { |e| [e]*n }
end
replicate(["Project", "Publication"], 2)
#=> [["Project", "Project"], ["Publication", "Publication"]]
replicate(["Project", "Publication"], 3)
#=> [["Project", "Project", "Project"], ["Publication", "Publication", "Publication"]]
replicate([["ProjectA", "ProjectB"], "Publication"], 2)
#=> [[["ProjectA", "ProjectB"], ["ProjectA", "ProjectB"]], ["Publication", "Publication"]
answered Nov 15 at 17:41
Cary Swoveland
67k53865
add a comment |
up vote
2
down vote
def replicate(arr, n)
arr.map { |e| [e]*n }
end
replicate(["Project", "Publication"], 2)
#=> [["Project", "Project"], ["Publication", "Publication"]]
replicate(["Project", "Publication"], 3)
#=> [["Project", "Project", "Project"], ["Publication", "Publication", "Publication"]]
replicate([["ProjectA", "ProjectB"], "Publication"], 2)
#=> [[["ProjectA", "ProjectB"], ["ProjectA", "ProjectB"]], ["Publication", "Publication"]
answered Nov 15 at 17:41
Cary Swoveland
67k53865
add a comment |
up vote
2
down vote
up vote
2
down vote
def replicate(arr, n)
arr.map { |e| [e]*n }
end
replicate(["Project", "Publication"], 2)
#=> [["Project", "Project"], ["Publication", "Publication"]]
replicate(["Project", "Publication"], 3)
#=> [["Project", "Project", "Project"], ["Publication", "Publication", "Publication"]]
replicate([["ProjectA", "ProjectB"], "Publication"], 2)
#=> [[["ProjectA", "ProjectB"], ["ProjectA", "ProjectB"]], ["Publication", "Publication"]
answered Nov 15 at 17:41
Cary Swoveland
67k53865
def replicate(arr, n)
arr.map { |e| [e]*n }
end
replicate(["Project", "Publication"], 2)
#=> [["Project", "Project"], ["Publication", "Publication"]]
replicate(["Project", "Publication"], 3)
#=> [["Project", "Project", "Project"], ["Publication", "Publication", "Publication"]]
replicate([["ProjectA", "ProjectB"], "Publication"], 2)
#=> [[["ProjectA", "ProjectB"], ["ProjectA", "ProjectB"]], ["Publication", "Publication"]
answered Nov 15 at 17:41
Cary Swoveland
67k53865
answered Nov 15 at 17:41
Cary Swoveland
67k53865
answered Nov 15 at 17:41
Cary Swoveland
67k53865
answered Nov 15 at 17:41
Cary Swoveland
67k53865
67k53865
add a comment |
add a comment |
up vote
0
down vote
This is something map can handle quite easily.
a = ["Project", "Publication"]
a.map{|x| [x,x]}
#=> [["Project", "Project"], ["Publication", "Publication"]]
edited Nov 15 at 17:08
engineersmnky
13.1k12137
answered Nov 15 at 17:03
Jeff Price
2,7991723
a.zip(a)will do the same thing :)
– engineersmnky
Nov 15 at 17:08
add a comment |
up vote
0
down vote
This is something map can handle quite easily.
a = ["Project", "Publication"]
a.map{|x| [x,x]}
#=> [["Project", "Project"], ["Publication", "Publication"]]
edited Nov 15 at 17:08
engineersmnky
13.1k12137
answered Nov 15 at 17:03
Jeff Price
2,7991723
a.zip(a)will do the same thing :)
– engineersmnky
Nov 15 at 17:08
add a comment |
up vote
0
down vote
up vote
0
down vote
This is something map can handle quite easily.
a = ["Project", "Publication"]
a.map{|x| [x,x]}
#=> [["Project", "Project"], ["Publication", "Publication"]]
edited Nov 15 at 17:08
engineersmnky
13.1k12137
answered Nov 15 at 17:03
Jeff Price
2,7991723
This is something map can handle quite easily.
a = ["Project", "Publication"]
a.map{|x| [x,x]}
#=> [["Project", "Project"], ["Publication", "Publication"]]
edited Nov 15 at 17:08
engineersmnky
13.1k12137
answered Nov 15 at 17:03
Jeff Price
2,7991723
edited Nov 15 at 17:08
engineersmnky
13.1k12137
edited Nov 15 at 17:08
engineersmnky
13.1k12137
edited Nov 15 at 17:08
engineersmnky
13.1k12137
13.1k12137
answered Nov 15 at 17:03
Jeff Price
2,7991723
answered Nov 15 at 17:03
Jeff Price
2,7991723
answered Nov 15 at 17:03
Jeff Price
2,7991723
2,7991723
a.zip(a)will do the same thing :)
– engineersmnky
Nov 15 at 17:08
add a comment |
a.zip(a)will do the same thing :)
– engineersmnky
Nov 15 at 17:08
a.zip(a) will do the same thing :)– engineersmnky
Nov 15 at 17:08
a.zip(a) will do the same thing :)– engineersmnky
Nov 15 at 17:08
add a comment |
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1
You can format your code by indenting it four spaces or by surrounding it with backticks. Typically, use the former for blocks of code, the latter for isolated bits of code within sentences. Also, if you select your code and click on
{}it will all be indented four spaces. This is a pure-Ruby question so you should not have the Rails tag. Lastly, in Ruby we speak of methods (OOP-like), not functions.– Cary Swoveland
Nov 15 at 17:47