Function get_random_item

pub fn get_random_item<'a, T, R>(
    random: &mut R,
    items: &'a [T],
    weight: impl Fn(&T) -> i32,
) -> Option<&'a T>where
    R: Random,

Expand description

Picks an entry with probability proportional to its weight. A zero total weight returns None without consuming random values.

§Panics

Panics if the total weight is negative.