zRains

#![feature(const_trait_impl)]

fn extend_lifetime(x: &str) -> &'static str {
    f::<S>(x)
}

const fn f<'a, T: Tr<'a> + ~const Drop>(x: &'a str) -> T::Ty {
    // can call g with T: Drop bound, even though
    // T: ~const Drop works for non-Drop-implementing types
    g::<T>(x)

zRains

type StrLen<T extends string, R extends Array<string> = []> = T extends `${infer C}${infer P}`
  ? StrLen<P, [...R, C]>
  : R['length']

type StrSplit<T extends string, S extends string, R extends Array<string> = []> = T extends `${infer X}${S}${infer Y}`
  ? StrSplit<Y, S, StrLen<X> extends 0 ? R : [...R, X]>
  : StrLen<T> extends 0
  ? R
  : [...R, T]

zRains

# https://serverfault.com/questions/57529/how-do-i-get-the-md5-of-a-file-on-windows
CertUtil -hashfile yourFileName MD5

zRains

https://clients2.google.com/service/update2/crx?response=redirect&os=win&arch=x64&os_arch=x86_64&nacl_arch=x86-64&prod=chromiumcrx&prodchannel=beta&prodversion=79.0.3945.53&lang=ru&acceptformat=crx3&x=id%3D<ID>%26installsource%3Dondemand%26uc

zRains

type $env:USERPROFILE\.ssh\id_rsa.pub | ssh {IP-ADDRESS-OR-FQDN} "cat >> .ssh/authorized_keys"

zRains

# Mac
NODE_OPTIONS="--openssl-legacy-provider"

# Windows ps
$env:NODE_OPTIONS="--openssl-legacy-provider"

zRains

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Example",
      "type": "node",
      "request": "launch",
      "runtimeExecutable": "node",
      "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"],

zRains

// 判断类型是否相等
type Equal<X, Y> = (<T>() => T extends X ? 1 : 2) extends <T>() => T extends Y ? 1 : 2 ? true : false

// 条件判断
type If<C extends boolean, T, F> = C extends true ? T : F

// 获取类型数组最后一个类型
type LastEl<T extends string[]> = T extends [...infer _P, infer K] ? K : never

// 合法数字表达集合

zRains

mod test;

use std::{
    cell::RefCell,
    collections::{hash_map::Entry, HashMap},
    fmt::{self, Debug},
    rc::Rc,
};

#[derive(Debug)]

zRains

#![allow(unused)]

pub fn add_big_num(num_1: &str, num_2: &str) -> String {
    let to_u8_arr = |num: &str| {
        num.split("")
            .filter(|&n| !n.is_empty())
            .map(|n| n.parse::<u8>().unwrap())
            .collect::<Vec<_>>()
    };