typo AȌ
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This document discusses a Ruby module called TypoFixer that can detect and fix typos in method calls. It provides examples of how TypoFixer can find the correct method when a typo is made, such as calling "sme_motoehd" instead of "some_method". The module uses string permutations to find method names that are close to the one called with a typo. It also discusses enhancing TypoFixer to prompt the user before fixing the typo.
![require 'typo_fixer'
class Object
??include TypoFixer
end
p [1, 2, 3].shaflfe.joni #=> "213"
https://gist.github.com/1870273](https://image.slidesharecdn.com/shinjuku-rb02lt-120222043935-phpapp01/85/typo-13-320.jpg)
![module TypoFixer
??def self.included(base)
????base.class_eval do
??????alias_method :method_missing_without_fix_typo, :method_missing
??????alias_method :method_missing, :method_missing_with_fix_typo
????end
??end
??def method_missing_with_fix_typo(name, *args)
????if method = find_method(name)
??????$stdout.print "WARNING: execute `#{name}` as `#{method}`? [Y/n] "
??????return send(method, *args) if ($stdin.getc == 'Y')
????end
????method_missing_without_fix_typo(name, *args)
??end
??private
??def find_method name
????self.class.instance_methods.each do |method|
??????next unless method.size == name.size
if(method.to_s.split(//) - name.to_s.split(//)).size == 1
??????return method
end
????end
??end
end https://gist.github.com/1883331](https://image.slidesharecdn.com/shinjuku-rb02lt-120222043935-phpapp01/85/typo-15-320.jpg)
typo AȌ
- 1. typo 2012-02-22 kchinda@aiming-inc.com (a.k.a. @ckazu)
- 2. about me ? @ckazu ? ? G ? Rails ? Rails + JS ? Rails, Ruby 17
- 6. typo
- 7. typo
- 8. ? typo
- 9. typo
- 10. ? ? User.count User.coutn
- 11. module TypoFixer ??def self.included(base) ????base.class_eval do ??????alias_method :method_missing_without_fix_typo, :method_missing ??????alias_method :method_missing, :method_missing_with_fix_typo ????end ??end ??def method_missing_with_fix_typo(name, *args) ????if name && method = find_method(name) ??????$stderr.puts "WARNING: execute `#{name}` as `#{method}` for #{self}" ??????send(method, *args) ????else ??????method_missing_without_fix_typo(name, *args) ????end ??end ??private ??def find_method name ????name.to_s.split(//).permutation.each do |candidate| ??????_candidate = candidate.join ??????return _candidate if respond_to?(_candidate, true) ????end ????nil ??end end https://gist.github.com/1870273
- 12. require 'typo_fixer' class Sample ??include TypoFixer ??def some_method ????'some value' ??end end sample = Sample.new p sample.sme_motoehd #=> 'some value' p sample.sme_motoehd.reveres #=> error! https://gist.github.com/1870273
- 13. require 'typo_fixer' class Object ??include TypoFixer end p [1, 2, 3].shaflfe.joni #=> "213" https://gist.github.com/1870273
- 14. ? ? User.count User.caunt
- 15. module TypoFixer ??def self.included(base) ????base.class_eval do ??????alias_method :method_missing_without_fix_typo, :method_missing ??????alias_method :method_missing, :method_missing_with_fix_typo ????end ??end ??def method_missing_with_fix_typo(name, *args) ????if method = find_method(name) ??????$stdout.print "WARNING: execute `#{name}` as `#{method}`? [Y/n] " ??????return send(method, *args) if ($stdin.getc == 'Y') ????end ????method_missing_without_fix_typo(name, *args) ??end ??private ??def find_method name ????self.class.instance_methods.each do |method| ??????next unless method.size == name.size if(method.to_s.split(//) - name.to_s.split(//)).size == 1 ??????return method end ????end ??end end https://gist.github.com/1883331
- 16. require 'typo_fixer' class Object ??include TypoFixer end p "some string".revarse #=> "gnirts emos" https://gist.github.com/1870273
- 17. ? ? array.flatten array.flaten
- 18. ?
- 19. ? ? car.control car.controll
- 20. ?
- 21. ? ? User.fin_dvy_id(di)
- 22. ?
- 23. ? method typo
- 26. ?