Skip to content

Instantly share code, notes, and snippets.

View qiaoin's full-sized avatar
🎯
Focusing

songyun qiaoin

🎯
Focusing
View GitHub Profile
#![warn(rust_2018_idioms)]
#[derive(Debug)]
pub struct StrSplit<'haystack, D> {
remainder: Option<&'haystack str>,
delimiter: D,
}
impl<'haystack, D> StrSplit<'haystack, D> {
pub fn new(haystack: &'haystack str, delimiter: D) -> Self {
@chriscandy
chriscandy / install-arch-linux-using-efi-and-grub.md
Last active February 1, 2026 20:31
Install Arch Linux using EFI and GRUB

Installing Arch linux with EFI

  1. Change keyboard layout:

    • loadkeys no
  2. Verify boot mode:

    • ls /sys/firmware/efi/efivars (If the directory exist your computer supports EFI)
  3. Ping some site on the Internet to verify connection:

  • ping archlinux.org

The PATH is an important concept when working on the command line. It's a list of directories that tell your operating system where to look for programs, so that you can just write script instead of /home/me/bin/script or C:\Users\Me\bin\script. But different operating systems have different ways to add a new directory to it:

Windows

  1. The first step depends which version of Windows you're using:
  • If you're using Windows 8 or 10, press the Windows key, then search for and
@jonhoo
jonhoo / go-test-many.sh
Last active April 20, 2025 03:54
Script for running go tests many times in parallel, printing the current status, and logging errors
#!/bin/bash
#
# Script for running `go test` a bunch of times, in parallel, storing the test
# output as you go, and showing a nice status output telling you how you're
# doing.
#
# Normally, you should be able to execute this script with
#
# ./go-test-many.sh
#
@pluskid
pluskid / sample-resume.tex
Last active January 7, 2022 01:08
Sample resume template
% Some people asked the LaTeX template for http://pluskid.org/assets/chiyuan-resume.pdf
% So I put a sample here. Feel free to use / modify it. Note you need to use xelatex to
% compile it and change the fonts to the ones you prefer and have on your system.
\documentclass[11pt]{article}
\usepackage{color}
\definecolor{ColorURL}{rgb}{0.1,0.12,0.45}
\usepackage[colorlinks=true,urlcolor=ColorURL]{hyperref}
\usepackage{fontspec,xunicode,xltxtra}
\usepackage[left=.8in,right=.8in,top=.9in,bottom=.7in]{geometry}
\usepackage{setspace}
@ramalho
ramalho / coro_life.py
Last active December 6, 2024 10:20
John Conway's Game of Life implemented with coroutines, by Brett Slatkin
#!/usr/bin/env python3
# Copyright 2014 Brett Slatkin, Pearson Education Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
@jboner
jboner / latency.txt
Last active March 16, 2026 22:58
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD