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Ruby2.5.0 overview
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ishikawa ryu
April 19, 2018
Technology
0
51
Ruby2.5.0 overview
Ruby2.5.0のリリースを目前に控え、変更点をLT用にまとめ共有した。
ishikawa ryu
April 19, 2018
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Transcript
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5SZJU cd path/to/sandbox && mkdir locale wget https://cache.ruby-lang.org/pub/ruby/2.5/ ruby-2.5.0-preview1.tar.gz tar
xvzf https://cache.ruby-lang.org/pub/ruby/2.5/ ruby-2.5.0-preview1.tar.gz cd ruby-2.5.0-preview1 ./configure —prefix=/path/to/sandbox/local make sudo make install cd ../local ./bin/ruby -v #=> 2.5.0preview1
ओͳมߋ SVCZ/&84BUW@@@QSFWJFXuSVCZSVCZcIUUQTHJUIVCDPNSVCZSVCZCMPCW@@@QSFWJFX/&84
ओͳมߋ SVCZ/&84BUW@@@QSFWJFXuSVCZSVCZcIUUQTHJUIVCDPNSVCZSVCZCMPCW@@@QSFWJFX/&84 ͋ͱͰΑΉ
,FSOFMZJFME@TFMG # ҾʹࣗࣗΛͱΓɺϒϩοΫҾΛฦΓͱ͢Δ(mapͬΆ͍) 2.yield_self { |n| n * 10 }
#=> 20 # tapϒϩοΫͷதΛฦ͢Θ͚Ͱͳ͍ 2.tap { |n| n * 10 } #=> 2 # ϨγʔόͦͷͷΛtapͰॻ͖͑ΔΑ͏ͳॲཧಉ݁͡ՌʹͳΔ [].tap { |arr| arr << 1 << 2 << 3 } [].yield_self { |arr| arr << 1 << 2 << 3 }
,FSOFMZJFME@TFMG require 'rest-client' require 'uri' require 'json' payment_id = 'hogehoge'
endpoint = URI::Generic.build( # 1. endpointͷ࡞ scheme: 'http', # host: 'api.example.com', # path: "/api/v1/payments/#{payment_id}", # port: 3000 # ).to_s # response = RestClient.get(endpoint) # 2. ϦΫΤετ͛Δ response_body = JSON.parse(response.body) # 3. ϨεϙϯεΛjsonͱͯ͠ղऍ͢Δ # puts response_body #=> { version: "1.0.0", response: { message: "..." } }
,FSOFMZJFME@TFMG require 'rest-client' require 'uri' require 'json' payment_id = 'hogehoge'
response_body = URI::Generic.build( # 1. endpointͷ࡞ scheme: 'http', # host: 'api.example.com', # path: "/api/v1/payments/#{payment_id}", # port: 3000 # ).to_s # .yield_self { |endpoint| RestClient.get(endpoint) } # 2. ϦΫΤετ͛Δ .yield_self { |response| JSON.parse(response.body) } # 3. ղऍ͢Δ # puts response_body #=> { version: "1.0.0", response: { message: "..." } }
,FSOFMZJFME@TFMG res = RestClient.get("/users/current") user = JSON.parse(res.body) user_id = user['id']
res = RestClient.get("/users/#{user_id}/friends") friends = JSON.parse(res.body) f_id = friends.last['id'] res = RestClient.get("/users/#{f_id}/profile") profile = JSON.parse(res.body)
,FSOFMZJFME@TFMG profile = RestClient.get("/users/current") .yield_self { |res| JSON.parse(res.body) } .yield_self
{ |user| user['id'] } .yield_self { |user_id| RestClient.get("/users/#{user_id}/ friends") } .yield_self { |res| JSON.parse(res.body) } .yield_self { |friends| friends.last['id'] } .yield_self { |f_id| RestClient.get(“/users/#{f_id}/ profile”) } .yield_self { |res| JSON.parse(res.body) }