Created
February 21, 2019 07:58
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Try updating a portion of a yaml file
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| f = File.open("./example.yaml", "w") | |
| 100000.times do |n| | |
| str = "user_#{n}:\n id: #{n}\n score: 0\n" | |
| File.write("./example.yaml", str, mode: "a") | |
| end | |
| def find_position(target, file_obj) | |
| file_obj.pos = file_obj.read =~ Regexp.new(target) | |
| end | |
| def update_user(name, params) | |
| file = File.new("./example.yaml") | |
| char_pos = find_position(name, file) | |
| new_str = 3.times.with_object("") do |_, str| | |
| str << file.readline | |
| end | |
| params.each do |k, v| | |
| attr_line = Regexp.new(k.to_s + ".+$") | |
| new_str.sub!(attr_line, "#{k}: #{v}") | |
| end | |
| File.write("./example.yaml", new_str, char_pos) | |
| end | |
| require 'yaml' | |
| def modify_user(name, params) | |
| users_info = YAML.load_file("./example.yaml") | |
| user = users_info[name] | |
| params.each do |k, v| | |
| user[k.to_s] = v | |
| end | |
| File.open("./example.yaml", "w") do |f| | |
| f.write(YAML.dump(users_info)) | |
| end | |
| end | |
| def change_user(name, params) | |
| users_info = YAML.load_file("./example.yaml") | |
| user_info = users_info[name] | |
| params.each do |k, v| | |
| user_info[k.to_s] = v | |
| end | |
| pos = find_position(name, File.open("./example.yaml")) | |
| user_hash = { name => user_info } | |
| File.write("./example.yaml", YAML.dump(user_hash).sub("---\n", ""), pos) | |
| end | |
| start = Time.new | |
| update_user("user_500000", score: 9) | |
| over = Time.new | |
| duration = over - start | |
| p duration | |
| start = Time.new | |
| modify_user("user_500000", score: 8) | |
| over = Time.new | |
| duration = over - start | |
| p duration | |
| start = Time.new | |
| change_user("user_500000", score: 7) | |
| over = Time.new | |
| duration = over - start | |
| p duration |
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