Find head/tail that all satisfies a predicate.
head_while(.x, .p, ...) tail_while(.x, .p, ...)
A list or atomic vector.
A single predicate function, a formula describing such a
predicate function, or a logical vector of the same length as
Additional arguments passed on to the mapped function.
We now generally recommend against using
# Instead of x |> map(f, 1, 2, collapse = ",") # do: x |> map(\(x) f(x, 1, 2, collapse = ","))
This makes it easier to understand which arguments belong to which function and will tend to yield better error messages.
A vector the same type as
pos <- function(x) x >= 0 head_while(5:-5, pos) tail_while(5:-5, negate(pos)) big <- function(x) x > 100 head_while(0:10, big) tail_while(0:10, big)
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