Peek Maximum-Priority Element

Returns the element at the maximum priority without modifying the queue.

Usage

peek_max(x)

Arguments

x

A priority_queue.

Value

Element at maximum priority, or NULL when x is empty.

Details

Ties are stable: when multiple elements share maximum priority, this returns the earliest element in queue order.

Examples

x <- priority_queue("a", "b", "c", priorities = c(2, 3, 3))
peek_max(x)
#> [1] "b"
peek_max(priority_queue())
#> NULL