Ruby convert comma separated values to array-CodePudding

I'm trying to print each values in a line separately. I want the TCP, ports and CIDR to be printed as array values.

sg_rules="TCP,80,80,0.0.0.0/0
TCP,8080,8080,0.0.0.0/0"


sg_rules.each_line  do |rule|
    rule.split(',')
    print rule[0]
end

But I'm getting the following output. I expected TCP as the result.

Output:

$ruby main.rb
TT

CodePudding user response：

When you call 'split' that returns an array but does not actually store the result in rule variable...

Try this:

sg_rules.each_line  do |rule|
  print rule.split(',').first
end