Printing elements of array in one line in Ruby

Question

I have got the following Ruby hash:

hash = {
0 => "
===
@@@
@ @
@ @
@ @
@@@
===",
1 => "
=
@
@
@
@
@
="}

I would like to print out some of the values of the hash in one line in the console. To that effect, I have created an array with the elements I would like printed out:

test = [hash[0], hash[1]]

or

test1 = [hash[0], hash[0]]

In case I want to print test1 to the console, the result should be the following:

======
@@@@@@
@ @@ @
@ @@ @
@ @@ @
@@@@@@
======

In case I want to print `test2 to the console, the result should be:

====
@@@@
@ @@
@ @@
@ @@
@@@@
====

However, when I use puts or print , the result is always that one is printed after another and not in the same line.

Answer 1

a1, a2 = hash.values.map { |s| s[1..-1].split("\n") }
  #=> [["===", "@@@", "@ @", "@ @", "@ @", "@@@", "==="],
  #    ["=", "@", "@", "@", "@", "@", "="]] 

puts a1.zip(a1).map(&:join)
======
@@@@@@
@ @@ @
@ @@ @
@ @@ @
@@@@@@
======

puts a1.zip(a2).map(&:join)
====
@@@@
@ @@
@ @@
@ @@
@@@@
====

Note:

a1.zip(a1)
  #=> [["===", "==="], ["@@@", "@@@"], ["@ @", "@ @"], ["@ @", "@ @"],
  #    ["@ @", "@ @"], ["@@@", "@@@"], ["===", "==="]]

a1.zip(a2)
  #=> [["===", "="], ["@@@", "@"], ["@ @", "@"], ["@ @", "@"],
  #    ["@ @", "@"], ["@@@", "@"], ["===", "="]] 

s[1..-1] , which drops the first character of hash[0] and hash[1] , is needed because that character is a newline ( "\\n" ). Had the two lines 0 => " and === been written 0 =>"=== (similar for hash[1] ), I could have written s.split("\\n") .

Answer 2

You need to create a two-dimensional structure first to be able to get the wanted result.

I suggest the following steps:

1. Deconstruct the values in your hash

    atomic = hash.values.map{ |e| e.split("\\n")} 

   This will give you

    [["", "===", "@@@", "@ @", "@ @", "@ @", "@@@", "===" ], [ "", "=", "@", "@", "@", "@", "@", "=" ]] 

2. Use the new data structure to build the output you need

   first case:

    test1 = atomic[0].zip(atomic[0]).map(&:join) puts test1 

   =>

    ====== @@@@@@ @ @@ @ @ @@ @ @ @@ @ @@@@@@ ====== 

   second case:

    test2 = atomic[0].zip(atomic[1]).map(&:join) 

   =>

    ==== @@@@ @ @@ @ @@ @ @@ @@@@ ==== 

I hope you find that helpful.