Closed fujiya228 closed 1 year ago
https://ja.wikipedia.org/wiki/%E3%83%A1%E3%83%A2%E5%8C%96
https://www.google.com/search?q=%E3%83%A1%E3%83%A2%E5%8C%96+ruby+boolean&sxsrf=ALeKk03unqVqmROGDUegTFAbZSCCluITzQ%3A1622546365063&ei=vRe2YM-mA4-mmAXCnoLQDg&oq=%E3%83%A1%E3%83%A2%E5%8C%96+ruby+boolean&gs_lcp=Cgdnd3Mtd2l6EAMyBQgAEM0COgcIIxCwAxAnOg0IABCwAxAIEAQQChAeOgQIABAeOgoIABAIEAQQChAeOgQIIxAnOgUIIRCgAToECCEQFVCUHVjwN2D0OmgBcAB4AIABngGIAa4IkgEDOC4zmAEAoAEBqgEHZ3dzLXdpesgBAsABAQ&sclient=gws-wiz&ved=0ahUKEwiP-eGdqPbwAhUPE6YKHUKPAOoQ4dUDCA4&uact=5
https://love-and-geek.caraquri.com/back-end-memoization/
https://moneyforward.com/engineers_blog/2019/03/15/ruby-code-4/
https://ja.wikipedia.org/wiki/%E3%83%A1%E3%83%A2%E5%8C%96
https://www.google.com/search?q=%E3%83%A1%E3%83%A2%E5%8C%96+ruby+boolean&sxsrf=ALeKk03unqVqmROGDUegTFAbZSCCluITzQ%3A1622546365063&ei=vRe2YM-mA4-mmAXCnoLQDg&oq=%E3%83%A1%E3%83%A2%E5%8C%96+ruby+boolean&gs_lcp=Cgdnd3Mtd2l6EAMyBQgAEM0COgcIIxCwAxAnOg0IABCwAxAIEAQQChAeOgQIABAeOgoIABAIEAQQChAeOgQIIxAnOgUIIRCgAToECCEQFVCUHVjwN2D0OmgBcAB4AIABngGIAa4IkgEDOC4zmAEAoAEBqgEHZ3dzLXdpesgBAsABAQ&sclient=gws-wiz&ved=0ahUKEwiP-eGdqPbwAhUPE6YKHUKPAOoQ4dUDCA4&uact=5
https://love-and-geek.caraquri.com/back-end-memoization/
https://moneyforward.com/engineers_blog/2019/03/15/ruby-code-4/