r - Difference between "=" and "=="

Question

I don't understand the difference between "=" and "==" in R. I have a few questions:

• Why does = assign when in a script but not when in a function?
• Why should I use <- when = exists? Is there a difference?

Answer 1

我从来没有写过，r但我几乎可以肯定地告诉你，=赋值运算符是赋值运算符，而==相等运算符是。一个快速的谷歌搜索将很容易回答你有这样的问题。

似乎箭头运算符<-在 R 中更常用于赋值，而不是=.

任务：

x = 3
x <- 3

测试相等性：

if (x == 3)

• R 运算符
• 来自其他语言的人的 R 编程

Answer 2

=用于分配和设置功能参数。

==用于比较变量：测试相等性。