Is there a way to execute if statement for null values

Question

I am having the following code, but somehow I am not able to execute the code:

asd <- c()

asd1 <- c()

if(asd == asd1)

{

  pr <- 0

} else{

  pr <- 1

}

Error in if (asd == asd1) { : argument is of length zero

I just wanted to know that can we not implement the null values here?

Answer 1

You can use all(), refer to the code:

asd <- c()

asd1 <- c()

if(all(asd == asd1)){

  pr <- 0

} else{

  pr <- 1

}

> pr

[1] 0

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