What is the equivalent of \(x) in lower versions of r?
Solution 1:
\ is a syntactic shortcut for the function keyword starting with R 4.1.0. From the documentation:
function( arglist ) expr \( arglist ) expr
In fact, we can verify the syntactic equivalence ourselves by looking at an unevaluated expression:
quote(\(arglist) expr)
# function(arglist) expr