Change default arguments of an R function at runtime

2018-06-21 00:11:59

Is it possible to change the default values of formal parameters in an R function at runtime?

Let's assume, we have the function

f <- function(x=1) { 
    ...
}

can I somehow change the default value of x from 1 to, say, 2?

Thanks in advance,
Sven

是的，默认包允许你这样做。

一种替代（在不同的SO后示出）是使用formals的功能，例如：

formals(f) <- 2

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