Question

I have a dynamic string (in Ruby program) and I need to split it if it is longer then 91 chars. I need to split it into parts on closes comma ‘,’ char.

String example:

"1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41"

Thank you!

Answer 1

This is what you need:

string.split(',').in_groups_of(90, false)

Result:

> str.split(',').in_groups_of(10, false)
=> [["1", "2", "3", "4", "5", "6", "7", "8", "9", "10"],
 ["11", "12", "13", "14", "15", "16", "17", "18", "19", "20"],
 ["21", "22", "23", "24", "25", "26", "27", "28", "29", "30"],
 ["31", "32", "33", "34", "35", "36", "37", "38", "39", "40"],
 ["41"]]

Or an array with joined values:

str.split(',').in_groups_of(10, false).map {|s| s.join(',')}

Result:

> str.split(',').in_groups_of(10, false).map {|s| s.join(',')}
=> ["1,2,3,4,5,6,7,8,9,10",
 "11,12,13,14,15,16,17,18,19,20",
 "21,22,23,24,25,26,27,28,29,30",
 "31,32,33,34,35,36,37,38,39,40",
 "41"]

UPDATE:

With plain Ruby (not Rails):

str.split(',').each_slice(10).to_a

or joined:

str.split(',').each_slice(10).map {|s| s.join(',')}