Ricardo Fernández Serrata Rudxain

TIL that the _OSI function serves a similar purpose to User-Agent strings. Not just that, but it has the same funny pitfalls:

	type numeric = number \| bigint

	const num_guard = (x: unknown): x is numeric =>
	typeof x == 'number' \|\| typeof x == 'bigint'

	const num_cond = <T,>(x: T) => (
	typeof x == 'number' \|\| typeof x == 'bigint'
	) as T extends numeric ? true : false

	// this example is incomplete,

	#![no_std]

	/// if `cond` is `true`, then `identity(x)`
	///
	/// if `cond` is `false` then `drop(x)`
	pub fn cond_ident<T>(cond: bool, x: T) -> Option<T> {
	if cond {
	Some(x)
	} else {
	None

	#![warn(clippy::pedantic, clippy::nursery)]

	use core::iter::successors;
	use num_integer::{Integer, Roots}; //0.1

	pub fn divisors_fast<T: Integer + Roots + Clone>(x: &T) -> Vec<T> {
	let sq = x.sqrt();
	let mut divs = Vec::new();

	let n1 = T::one();

	use num_integer::Integer; // 0.1

	#[derive(Copy, Clone, Eq, PartialEq, Debug)]
	enum S {
	F,
	B,
	FB,
	}

	fn fb<T: Integer>(n: &T) -> Option<S> {

	#!/bin/sh
	set -f
	[ -n "$(dumpsys deviceidle \| grep mScreenOn=false)" ]

	def fn(x, n):
	return (x/n + x*n) / 2