Engineer event in Kyoto 10-04-17
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This Ruby script takes a log file as input with entries separated by commas, parses each line into a unique ID and count, increments or sets the count for each ID in a hash, and finally prints out the number of unique IDs in the log file.
![#!/usr/bin/ruby
#!/usr/bin/ruby
h = Hash.new
ARGF.each do |line|
ARGF.each do |line| line.chomp!
line.chomp! array = line.split(/,/)
logs = line.split(/,/) uid = array[0]
c = array[1]
unless logs.empty?
printf("%s,1n", logs[0]) count = 1
if h.key? uid
end count = h[uid].to_i + 1
end end
h.store uid, count
end
printf("#{h.length}")](https://image.slidesharecdn.com/engineer-event-100417-kyoto-100423034302-phpapp02/85/Engineer-event-in-Kyoto-10-04-17-40-320.jpg)
![#!/usr/bin/ruby
#!/usr/bin/ruby
h = Hash.new
ARGF.each do |line|
ARGF.each do |line| line.chomp!
line.chomp! array = line.split(/,/)
logs = line.split(/,/) uid = array[0]
c = array[1]
unless logs.empty?
printf("%s,1n", logs[0]) count = 1
if h.key? uid
end count = h[uid].to_i + 1
end end
h.store uid, count
end
printf("#{h.length}")](https://image.slidesharecdn.com/engineer-event-100417-kyoto-100423034302-phpapp02/85/Engineer-event-in-Kyoto-10-04-17-42-320.jpg)
Engineer event in Kyoto 10-04-17
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- 40. #!/usr/bin/ruby #!/usr/bin/ruby h = Hash.new ARGF.each do |line| ARGF.each do |line| line.chomp! line.chomp! array = line.split(/,/) logs = line.split(/,/) uid = array[0] c = array[1] unless logs.empty? printf("%s,1n", logs[0]) count = 1 if h.key? uid end count = h[uid].to_i + 1 end end h.store uid, count end printf("#{h.length}")
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- 42. #!/usr/bin/ruby #!/usr/bin/ruby h = Hash.new ARGF.each do |line| ARGF.each do |line| line.chomp! line.chomp! array = line.split(/,/) logs = line.split(/,/) uid = array[0] c = array[1] unless logs.empty? printf("%s,1n", logs[0]) count = 1 if h.key? uid end count = h[uid].to_i + 1 end end h.store uid, count end printf("#{h.length}")
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