Laurence Chen humorless

Linux simple performance tweaks

Change the I/O Scheduler

Open $ vim /etc/default/grub then add elevator=noop next to GRUB_CMDLINE_LINUX_DEFAULT. Run $ update-grub and $ cat /sys/block/sda/queue/scheduler to be sure that noop is being used:

$ vim /etc/default/grub
$ update-grub
$ cat /sys/block/sda/queue/scheduler

[noop] deadline cfq

Problem 1: Nothing but the Truth [Elementary]

true

Problem 2: Simple Math [Elementary]

VAST Error Codes Table

From VAST 3.0 Spec (PDF)

Code	Description
100	XML parsing error.
101	VAST schema validation error.
102	VAST version of response not supported.
200	Trafficking error. Video player received an Ad type that it was not expecting and/or cannot display.

Vim without NERD tree or CtrlP

I used to use NERD tree for quite a while, then switched to CtrlP for something a little more lightweight. My setup now includes zero file browser or tree view, and instead uses native Vim fuzzy search and auto-directory switching.

Fuzzy Search

There is a super sweet feature in Vim whereby you can fuzzy find your files using **/*, e.g.:

:vs **/*<partial file name><Tab>

注意：本文内容适用于 Tmux 2.3 及以上的版本，但是绝大部分的特性低版本也都适用，鼠标支持、VI 模式、插件管理在低版本可能会与本文不兼容。

Tmux 快捷键 & 速查表 & 简明教程

启动新会话：

tmux [new -s 会话名 -n 窗口名]

恢复会话：

	function Foo(who) {
	this.me = who;
	}

	Foo.prototype.identify = function() {
	return "I am " + this.me;
	};

	function Bar(who) {
	Foo.call(this,"Bar:" + who);

	;; Datomic example code
	(use '[datomic.api :only (db q) :as d])

	;; ?answer binds a scalar
	(q '[:find ?answer :in ?answer]
	42)

	;; of course you can bind more than one of anything
	(q '[:find ?last ?first :in ?last ?first]
	"Doe" "John")

	(require '[clojure.spec.alpha :as s])

	[:h1 {} "0" 1 [:span]]

	(s/def :hiccup/form
	(s/or
	:string string?
	:number number?
	:element :hiccup/element))

	(ns datomic-helpers
	(:require [datomic.api :as d]))

	;;; Expose Datomic vars here, for convenience

	;;; Ring middleware

	(defn wrap-datomic
	"A Ring middleware that provides a request-consistent database connection and
	value for the life of a request."

	{:paths ["."]
	:deps {clansi {:mvn/version "1.0.0"}}}