What does the count variable do in this ruby code? I don't see how it is implemented to skip the first row of the imported csv.

CSV_INPUT = 'input.csv' imported_file = File.new(CSV_INPUT, 'r')

print "Student GPA "

count = 0

imported_file.each_line(" ") do |row| columns = row.split(',') if count == 0 count += 1 next end

total = 0 (1 ... columns.size).each do |index| grade = columns[index].strip.to_i total += grade end

avg = total/4.0 name = columns[0] puts "#{name} #{avg} " end