LanguageClasses(methods)
LanguageClasses()所属R语言包:methods
Classes to Represent Unevaluated Language Objects
类来表示不计算语言对象
译者:生物统计家园网 机器人LoveR
描述----------Description----------
The virtual class "language" and the specific classes that extend it represent unevaluated objects, as produced for example by the parser or by functions such as quote.
虚拟类"language"和扩展它代表不计算对象,例如生产的解析器或功能,如quote特定类别。
用法----------Usage----------
### each of these classes corresponds to an unevaluated object
### in the S language.
### The class name can appear in method signatures,
### and in a few other contexts (such as some calls to as()).
"("
"<-"
"call"
"for"
"if"
"repeat"
"while"
"name"
"{"
### Each of the classes above extends the virtual class
"language"
类的对象----------Objects from the Class----------
"language" is a virtual class; no objects may be created from it.
"language"是一个虚拟类;没有对象可以从它创建。
Objects from the other classes can be generated by a call to new(Class, ...), where Class is the quoted class name, and the ... arguments are either empty or a single object that is
从其他类的对象可以生成调用new(Class, ...)由,其中Class引用的类的名称,...参数是空或者是一个单一的对象
方法----------Methods----------
coerce signature(from = "ANY", to = "call"). A method
强制signature(from = "ANY", to = "call")。一种方法
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注:
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