idropwhile: Iterator that drops elements until the predicate function...
In itertools2: itertools2: Functions creating iterators for efficient looping

Description Usage Arguments Details Value Examples

Constructs an iterator that drops elements from the iterable object as long as the predicate function is true; afterwards, every element of iterable object is returned.

1	idropwhile(predicate, object)

`predicate`	a function that determines whether an element is `TRUE` or `FALSE`. The function is assumed to take only one argument.
`object`	an iterable object

Because the iterator does not return any elements until the predicate first becomes false, there may have a lengthy start-up time before elements are returned.

iterator object

# Filters out numbers exceeding 3
not_too_large <- function(x) {
  x <= 3
}
it <- idropwhile(not_too_large, 1:8)
as.list(it)

# Same approach but uses an anonymous function
it2 <- idropwhile(function(x) x <= 10, seq(2, 20, by=2))
as.list(it2)