any_vec 0.15.0

Type erased vector. Most operations can be done without type knowledge. Mostly zero overhead.
Documentation 
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use std::time::Duration;
use criterion::Criterion;

pub fn bench_custom<F: FnMut() -> Duration>(c: &mut Criterion, id: &str, mut routine: F) {
    c.bench_function(id, move |b|b.iter_custom(|iters|
        (0..iters).map(|_|routine()).sum()

    ));
}