Special neighbor primes: Difference between revisions
→{{header|Ruby}}: Add Ruby
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</pre>
=={{header|Ruby}}==
<syntaxhighlight lang="ruby">require 'prime'
Prime.each(100).each_cons(2).select{|p1, p2|(p1+p2-1).prime?}.each{|ar| p ar}</syntaxhighlight>
{{out}}
<pre>[3, 5]
[5, 7]
[7, 11]
[11, 13]
[13, 17]
[19, 23]
[29, 31]
[31, 37]
[41, 43]
[43, 47]
[61, 67]
[67, 71]
[73, 79]
</pre>
=={{header|Sidef}}==
<syntaxhighlight lang="ruby">func special_neighbor_primes(upto) {
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