I am trying to compare the %>% with the native |>, but I am not too sure why sometimes it only works for %>%. Here is an example:

library(magrittr)
library(stringr)


# Create the sample vector:
sample_value <- c(1, 2, 3, NA, 5)

It works when using pipe operator and its placeholder (.) from the magrittr package:

# With pipe operator and its placeholder (.):
sample_value %>%
  replace(list = is.na(.), values = 4) |> 
  str_flatten_comma()

I get expected result: [1] "1, 2, 3, 4, 4, 5"

But when I use the native pipe operator |> and its placeholder _, it didn’t work:

# With native pipe operator and its placeholder (_):
sample_value |> 
  replace(list = is.na(_), values = 4) |> 
  str_flatten_comma()

I get a warning:

Error in str_flatten_comma(replace(sample_value, list = is.na("_"), values = 4)) : 
  invalid use of pipe placeholder (<input>:3:0)

I am not sure what has caused the issue and I’d appreciate your thoughts. Thank you.