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ActionDispatch::Flash < Objec pass temporary primitive-types (String, Array, Hash) between actions. Anything you place in the flash will be exposed to 阅读全文
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params的理解和作用: http://api.rubyonrails.org/classes/ActionController/Parameters.html#method-i-require Allows you to choose which attributes should be whi 阅读全文
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第2章 Instant Gratification 复习 和 练习第一章,新建rails web页面。 重点: 页面生成的工作。(重点): 第3章 The Architecure of Rails Applications mvc架构创建Web应用。 Rails Model Support : Ob 阅读全文
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闰年程序 require_relative './leap_year' describe "Leap Year" do it "2016 is leap year" do result = is_leap_year?(2016) # 把 2016 传进去 expect(result).to eq(t 阅读全文
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编码规则 https://github.com/thoughtbot/guides/tree/master/style/ruby *Use a trailing comma after each item in a multi-line list, including the last item. 阅读全文
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Find The Find module supports the top-down traversal of a set of file paths.(一系列文件的路径的遍历) find(*paths, ignore_error: true) prune() require 'find' IGNO 阅读全文
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kernel#require_relative Ruby tries to load the library named string relative to the requiring file's path. 就是说当前运行文件的目录下面找这个要加载的文件。 如:/Users/个人/Ruby元编 阅读全文
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关于namespace,双冒号::的用法。 防止引用多个模块在一个文件/类中,有重名的对象。::可以调用类的类方法,和常量。 class Foo BAR = "hello" def self.hello puts "world" end end p Foo::BAR ✅ Foo::hello ✅ 根 阅读全文