语法错误，未预期的tIVAR，预期为'(' [英] Syntax error, unexpected tIVAR, expecting '('

问题描述

使用下面的代码行，我试图在@test_object的@test_results数组中插入一个元组:

Using the following line of code I'm trying to insert a tuple into the @test_results array of the @test_object:

@test_object.@test_results << [@u, @m, @r, @p]

但是它会引发以下错误:

But it raise the following error:

unexpected tIVAR, expecting '(' (SyntaxError)

为什么露比会期望'('?

Why is Ruby expecting '('?

推荐答案

问题是，为什么要键入.@test_results?这不是从对象外部访问对象的实例变量的正确方法.这就是为什么您会遇到此错误.

The question is, why do you type .@test_results? It's not the proper way to access object's instance variable from outside of the object. That's why you have this error.

您可能应该在@test_object所属的类中具有访问器:

You probably should have accessor in class that @test_object belongs to:

attr_accessor :test_results

或只是一个阅读器，如果您不需要test_results=方法:

or just a reader, if you don't need test_results= method:

attr_reader :test_results

前者等效于:

def test_results
  @test_results
end

def test_results=(value)
  @test_results = value
end

后者等于:

def test_results
  @test_results
end

然后，您只需键入:

@test_object.test_results << [@u, @m, @r, @p]

这篇关于语法错误，未预期的tIVAR，预期为'('的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！