问Ruby:动态生成attribute_accessorEN我正在尝试从散列(使用嵌套散列)生成attr_reader，以便它自动镜像...
Ruby的动态语言特性和强大的meta-programming模型一直是让我这种Java程序员唏嘘感慨。看着RoR可以实现那么多魔术般的事情而不费吹灰之力,我着实想好好学学Ruby的meta-programming。可惜这方面资料好像比较少(至少我是没有找到什么好的,JavaEye这里讨论的也不多),我只能硬着头皮自己慢慢摸索。这篇文章只能算是一个最简单...
Tainbox is a utility gem that can be used to inject attributes into Ruby objects. It is similar toVirtus, but works a bit more sensibly (hopefully) and throws in some additional features. But we already have attr_accessor! Consider this code: ...
class Assembly include Aduki::Initializer attr_accessor :name, :colour, :size end a = Assembly.new name: "Cooker", colour: "blue", size: "4" a.name # => "Cooker" a.colour # => "blue" a.size # => "4" So far, so unsurprising. Let's tell aduki thatsizeis an integer ...
Authenticate the User Credential Using Microsoft Open LDAP in C# .Net Autheticate AD via LDAPS protocol Author tag in C# documentation comments? Auto Complete TextBox bound to DataTable auto property accessor is never used Auto-reconnecting and detecting socket disconnection AutoMapper : from Dictiona...
as_json as_load_path (<= v2.3.8) attr_accessor_with_default (<= v3.1.0) attr_internal attr_internal_accessor attr_internal_define attr_internal_ivar_name attr_internal_reader attr_internal_writer cattr_accessor cattr_reader cattr_writer const_missing (<= v2.1.0) deep_dup delegate deleg...
Oandapy API是一个用于与OANDA外汇交易平台进行交互的Python库。AttributeError是Python中的一个异常,表示对象没有指定的属性。 在Oandapy API中,AttributeError可能会出现在以下情况下: 调用了不存在的方法或属性:当你尝试调用Oandapy API中不存在的方法或属性时,就会引发AttributeError。在使用Oandapy API时,确保你使...
auto property accessor is never used Auto-reconnecting and detecting socket disconnection AutoMapper : from Dictionary<int, string> to List<BlogList> Automapper and creating DTO class from stored procedure AutoMapper and Task Type Automated Web button click in WebBrowser control Automatic backup of a ...
My problem appears, in the same previous scenario, when you do: f=Form.select(:id,:name)# select only non attr_json attributesf.to_json# => Raises ActiveModel::MissingAttributeError: missing attribute: settings# from /home/ggr/.asdf/installs/ruby/3.1.3/lib/ruby/gems/3.1.0/gems/activemo...
It also used to cause cache size explosion which we fixed in #52118, but making it behave like Ruby'salias_method, by doing a real alias. But this breaks some expectations (literally from the documentation): attr_accessor:nameattribute_method_suffix'_short?'define_attribute_methods:namealias...