mtfse/src/ext/mod.rs

use std::iter::FusedIterator;
use std::collections::BTreeSet;
use std::borrow::Borrow;
use futures::prelude::*;

mod iters;
pub use iters::*;

mod streams;
pub use streams::*;

mod hashers;
pub use hashers::*;

pub const PRECOLLECT_STACK_SIZE: usize = 64;

/// Collect an iterator's output and then drop it to detach the iterator from any references or resources it might have.
#[macro_export] macro_rules! precollect {
    ($iter:expr, $num:literal) => {
	{
	    {
		let it: ::smallvec::SmallVec<[_; $num]> = $iter.into_iter().collect();
		it.into_iter()
	    }
	}
    };
    ($iter:expr) => {
	{
	    {
		let it: ::smallvec::SmallVec<[_; $crate::ext::PRECOLLECT_STACK_SIZE]> = $iter.into_iter().collect();
		it.into_iter()
	    }
	}
    }
}

#[macro_export] macro_rules! no_op {
    ($expr:expr) => {
	{
	    $expr;
	}
    };
}