ruby-class-attribute.rb:9:in 'another_method': undefined local variable or method 'message' for #<myspecialclass:0x007f91d88dea70> (NameError) from ruby-class-attribute.rb:15:in '<main>'</main></myspecialclass:0x007f91d88dea70> 让我们继续看看Ruby的属性...
p(BasicObject.superclass) # BasicObject没有超类, 可以认为是ROOT Class, 1.9的Object和BasicObject是从1.8的Object拆分而来. 1.8中没有BasicObject. 执行结果 : Myclass Object Module Object Class nil subclass继承了superclass的attribute和method. 并且subclass可以复写superclass的方法. 新增superclass中不存在的...
[:platformName].downcase when "android" idempotently_define_singleton_method(element["OBJNAME"]){$driver.find_element(:"#{element["ATTRIBUTE"]}","#{element["ANDROID_IDENTITY"]}")} else idempotently_define_singleton_method(element["OBJNAME"]){$driver.find_element(:"#{element["ATTRIBUTE"]}"...
1.ruby是动态语言,c#是静态语言--即对象在new出来以后,ruby还可以动态给对象实例添加一些属性或方法(javascript也是如此) 2.ruby中刻意弱化了变量类型这个概念,默认情况下变量/方法都不需要声明具体(返回)类型,但其实在ruby内部,会自动根据变量的值分配类型。(可以通过 “puts 变量.class“查看) 3.ruby相对c#来讲,...
Hanami::Utils::Class Load classes from strings. It also supports namespaces. [API doc] Hanami::Utils::ClassAttribute Inheritable class attributes. [API doc] Hanami::Utils::Deprecation Deprecate Hanami features. [API doc] Hanami::Utils::FileList ...
Normal Object-oriented Features (e.g. class, method calls) Advanced Object-oriented Features (e.g. mix-in, singleton-method) Operator Overloading Exception Handling Iterators and Closures Garbage Collection Dynamic Loading of Object Files (on some architectures) Highly Portable (works on many Unix...
class_eval do define_method "#{attribute}=" do |value| raise 'Invalid attribute!' unless validation.call(value) instance_variable_set("@#{attribute}", value) end define_method attribute do instance_variable_get "@#{attribute}" end end end add_checked_attribute(Person, :age) {|age| age...
objects has been made consistent with single attribute assignment evaluation order. With this code: foo::BAR = baz foo is now called before baz. Similarly, for multiple assignments to constants, left-to-right evaluation order is used. With this ...
obj.my_attribute=""就不必写成obj.my_attribute=(""),而更进一步的,像attr_accessor这样的类宏的实现方式也引起了我的兴趣。 看了网上的实现方式,自己动手试了一下。 classModuledefvar( method_name ) inst_variable_name="@#{method_name}".to_sym#.to_symp inst_variable_name#:=>:@bardefine_method...
classDemo< ApiCaseBaseupdateself.request,:requestId=>'gen_randcode(10)',:createTime=>'get_datetime'add_nodeself.request,"orderInfo",:orderId=>'gen_randcode(10)'add_listself.request,"payInfo",:transactionId=>'gen_randcode(15)',:payTime=>'get_datetime'sheetData={'ForApiOther'=>5} ...