Focusing

Jiacai Liu jiacai2050

Focusing

Rust developer at day and Zig at night. Host of @EmacsTalk and @RustTalk.

jiacai2050 / before

Last active August 31, 2021 00:28

emacs init benchmark

	Benchmark results

	╼►[benchmark-init/root nil 6987ms]
	├─[xdg require 14ms]
	├─[swiper require 12ms]
	├─[/Applications/Emacs.app/Contents/Resources/lisp/term/xterm.elc load 6ms]
	├─[vc-git load 22ms]
	│ ╰─[diff-mode require 18ms]
	├─[~/.config/emacs/etc/yasnippet/snippets/emacs-lisp-mode/.yas-setup load 0ms]
	├─[~/.config/emacs/etc/yasnippet/snippets/emacs-lisp-mode/.yas-compiled-snippets load 0ms]

jiacai2050 / gist:07184e8c3937190e303a5eefe3a12270

Last active May 5, 2021 05:38

Trait 使用及实现分析

jiacai2050 / name-calling.md

Created February 24, 2021 15:03 — forked from coolaj86/name-calling.md

What we call programmers - because labels make us happy! http://youtu.be/uxeR95aYer0#t=58

Node - Nodesters
Ruby - rubyists
Python - pythonistas
Cocoa - Cocoa Heads
Go - Gophers
AngularJS - Angularians
EmberJS - Emberinos

jiacai2050 / latency.txt

Created January 10, 2021 09:33 — forked from jboner/latency.txt

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

jiacai2050 / rust_drop_order.rs

Created November 13, 2020 01:26

jiacai2050 / .blogbackup.edn

Created August 25, 2020 04:28

config file for https://github.com/jiacai2050/blog-backup

	{:description "Blog-backup config"
	:home-page "https://github.com/jiacai2050/blog-backup"
	:blogs [{:id "go-blog"
	:base-url "https://blog.golang.org/index"
	:posts-selector "div#content > p > a"
	:page-tmpl "{{base-url}}"
	:total-page 1}
	{:id "meituan"
	:base-url "https://tech.meituan.com/"
	:posts-selector "div.post-container > h2 > a"

jiacai2050 / core_async_expand.cljs

Last active July 21, 2020 13:55

	;; (macroexpand '(go (<p! (.launch puppeteer pp-opts))))

	(let*
	[c__25860__auto__ (cljs.core.async/chan 1)]
	(cljs.core.async.impl.dispatch/run
	(clojure.core/fn
	[]
	(clojure.core/let
	[f__25861__auto__
	(clojure.core/let

jiacai2050 / output.txt

Created April 18, 2020 02:50

Example to reproduce stackoverflow error

	thread '
	thread 'outer-thread-0' has overflowed its stack
	fatal runtime error: stack overflow
	outer-thread-1' has overflowed its stack
	fatal runtime error: stack overflow
	Aborted (core dumped)

jiacai2050 / bench_test.go

Created March 15, 2020 05:23

go value vs pointer benchmark

	package main

	import "testing"

	var blackholeStr = ""
	var blackholeValue student
	var blackholePointer *student

	func BenchmarkPointerVSStruct(b *testing.B) {

jiacai2050 / web.go

Last active August 25, 2020 04:27

A simple web app demonstrate how to deal with err in handler