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## CLK
#set_property IOSTANDARD LVCMOS33 [get_ports clk_50M]
#set_property PACKAGE_PIN U18 [get_ports clk_50M]

## HDMI
#set_property IOSTANDARD TMDS_33 [get_ports TMDS_clk_n]
#set_property PACKAGE_PIN N18 [get_ports TMDS_clk_p]
#set_property IOSTANDARD TMDS_33 [get_ports TMDS_clk_p]
#set_property IOSTANDARD TMDS_33 [get_ports TMDS_data_n0]
#set_property PACKAGE_PIN V20 [get_ports TMDS_data_p0]

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Macbook Arch Guide

• Installation
• General Setup
• System Time
• Display
• Keyboard
• Touchpad
• Sound
• Bluetooth

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package main

import (
	"fmt"
	"runtime"
	"time"
	"math/rand"
)

type semaphore chan int

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1、安装arcanist，clone源代码到安装目录somewhere/，arcanist依赖于libphutil，所以两个都要clone
  somewhere/ git clone git://github.com/facebook/arcanist.git
  somewhere/ git clone git://github.com/facebook/libphutil.git
2、配置arc，将arc加入到PATH，或在/usr/sbin里面建一个到arc的软链接
  export PATH=$PATH:/somewhere/arcanist/bin/   
  或者：cd /usr/sbin; ln -sf /somewhere/arcanist/bin/arc
  * 在系统的~/.bashrc或~/.bash_profile中加上该export语句。
  * 运行命令"arc help"，来检测安装是否成功。
3、配置arc的编辑器，不然会报错，提示EDITOR环境变量没配置
  arc set-config editor "vim"

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Some commands

sudo diskutil apfs deleteContainer disk0s3
sudo diskutil eraseVolume "Free Space" %noformat% /dev/disk0s3
sudo diskutil apfs resizeContainer disk0s2 0

Reference

stackexchange

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//===--------------------------------------------
// File: transform.cc
// Usage: display a given image from a specific
//        rgb color space and simulate the image
//        from another color rgb space.
// Author: Xing GUO <higuoxing@gmail.com>
//===-------------------------------------------

#include <iostream>
#include <cmath>

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license: gpl-3.0
height: 500
scrolling: no
border: yes

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const ffi = require('ffi');
const ref = require('ref');
const ref_struct = require('ref-struct');
const struct = require('./wrapper/struct');

const sendChar = ffi.Callback('int', ['string', 'int', 'pointer'],
  // callback: SendChar
  // return type: int
  // args: ['string', 'int', 'void*']
  (res, id, user_data) => {

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{-# LANGUAGE GADTs #-}

module Regex.Automata (
    Automata    (..)   ,  -- Automata states transitions (initial state) (final states)
    Transition  (..)   ,  -- Transitions
    subsetConstruct    ,  -- Subset construction
    isEpsilon          ,  -- Indicates epsilon edge
    getStates          ,  -- Get two states of an edge
    getEdgeChar        ,  -- Get Char of an edge
    epsilonClosure_T   ,  -- Get the epsilon closure of a set of state

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quicksort :: (Ord a) => [a] -> [a]
quicksort [] = []
quicksort (x : xs) = 
    let smallerSorted = quicksort (filter (<= x) xs)
        biggerSorted  = quicksort (filter (> x) xs)
    in  smallerSorted ++ [x] ++ biggerSorted