#eachを使ったら負け

Enumerable使いましょう！

each指数スクリプト：https://gist.github.com/3008383

※2012/6/28の会社内LTで使用した資料

Transcript

1. #eachΛ࢖ͬͨΒෛ͚
2. GPSΛ࢖͍·͠ΐ͏
3. ʜ͡Όͳͯ͘
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6. &OVNFSBCMFΛ΋ͬͱ࢖͍·͠ΐ͏
7. Enumerable.instance_methods.sort => [:all?, :any?, :chunk, :collect, :collect_concat, :count, :cycle, :detect, :drop, :drop_while, :each_cons, :each_entry, :each_slice, :each_with_index, :each_with_object, :entries, :find, :find_all, :find_index, :first, :flat_map, :grep, :group_by, :include?, :inject, :map, :max, :max_by, :member?, :min, :min_by, :minmax, :minmax_by, :none?, :one?, :partition, :reduce, :reject, :reverse_each, :select, :slice_before, :sort, :sort_by, :take, :take_while, :to_a, :zip]
8. FBDIࢦ਺
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10. 6TBHF
12. RVJDL
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13. ஫ҙɿશવݡ͘ͳ͍ूܭํ๏
14. ack --no-group --ruby "<method>[\s\.\{\(=]" <dir>
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16. ΋ͬͱ&OVNFSBCMFʹ͍ͭͯ஌Γ͍ͨਓ΁
17. IUUQSVCZEPDPSHDPSF&OVNFSBCMFIUNM
18. $3VCZ
    enum.c
19. 3VCJOJVT
    kernel/common/enumerable*.rb
20. ͓·͚ɿ ͓͢͢Ίͷ&OVNFSBCMFϝιου
21. #each_with_object # Better than inject for building hashes %w(one two three).each_with_object({}) {|w, hash| hash[word] = word.length } # => {"one"=>3, "two"=>3, "three"=>5}