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

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.