Please help me how to do with this code. and what should i do with that code:
file1.txt file2.txt
aaa 111
bbb 222
ccc 333
ddd 444
and the result just show like this
aaa
bbb
ccc
ddd
111
222
333
444
but what i want is
aaa|111
bbb|222
ccc|333
ddd|444
Here is my code
f1 = File.readlines('./file1.txt')
f2 = File.readlines('./file2.txt')
File.open('result.txt', 'w') do |output_file|
f1.each_with_index do |elem, i|
output_file.puts "#{elem} #{f2[i]}"
end
end
Instead of iterating on one array and looking up the second array by index, it is more elegant to zip the two arrays together. puts will, given an array, output each element in a separate row.
f1 = File.readlines('file1.txt', chomp: true)
f2 = File.readlines('file2.txt', chomp: true)
lines = f1.zip(f2).map { |items| items.join('|') }
puts lines
Or, using the new shorthand syntax, you could even say
lines = f1.zip(f2).map { _1.join('|') }
.map(&:chomp)
f1 = File.readlines('./file1.txt').map(&:chomp)
f2 = File.readlines('./file2.txt').map(&:chomp)
File.open('result.txt', 'w') do |output_file|
f1.each_with_index do |elem, i|
output_file.puts "#{elem} #{f2[i]}"
end
end
Result
aaa 111
bbb 222
ccc 333
ddd 444