How to explicitly specify that a name refers to a variable, rather than a column name, in dplyr?

Question

I have the following chunk of code:

gap <- 1000  

HCE <- HCE %>%
   dplyr::mutate(ordered = gap * (as.numeric(outcome) - 1) + original)

I want to dismbiguate, in the mutate directive, that gap refers to the variable, not to a "gap" column. How can I do so?

Answer 1

The .data and .env pronouns make it explicit where to find objects when programming with data-masked functions.

HCE %>%
  mutate(ordered = .env$gap * (as.numeric(outcome) - 1) + original)

Or use the injection operator !! :

HCE %>%
  mutate(ordered = !!gap * (as.numeric(outcome) - 1) + original)

Reference

1. Injection operator !!
2. Injecting env-variables with !!