rainly

library(tidyverse)
library(gganimate)

NUMPLAYERS = 45
ROUNDS = 5000
INITWEALTH = 45

#initialize the bank
#columns wealths of the NUMPLAYERS players
#rows show wealths of each of the ROUNDS ticks of the clocks

rainly

alias 'pg_sql_restore'='PGPASSWORD=SOMEPASSWORD psql -cO -U username -d dbname -h localhost -f ' # + set path to backup file
alias 'pg_tar_restore'='PGPASSWORD=SOMEPASSWORD pg_restore -cO -U username -d dbname -h localhost ' # + set path to backup file

rainly

require 'mina/bundler'
require 'mina/git'

set :application, "forum"
set :domain, '%SERVERNAME%'
set :deploy_to, "%PATH-TO-APPLICATION%"
set :repository, '%REPOSITORY-URL%.git'
set :branch, 'master'
set :login,  "%LOGIN%"  

rainly

require 'mina/bundler'
require 'mina/git'

set :application, "forum"
set :domain, '%SERVERNAME%'
set :deploy_to, "%PATH-TO-APPLICATION%"
set :repository, '%REPOSITORY-URL%.git'
set :branch, 'master'
set :login,  "%LOGIN%"  

rainly

Using Git

Global Settings

Related Setup: https://gist.github.com/hofmannsven/6814278

Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/

rainly

#!/usr/bin/env python
# -*- coding: utf-8 -*- 
import math,random
import numpy as np
def rand(a, b):
    return (b-a)*random.random() + a

def dtanh(y):
    return 1.0-y*y
def mat(x):

rainly

linux查看httpd进程数

ps -ef | grep httpd | wc -l

查看Apache的并发请求数及其TCP连接状态

netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

rainly

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

rainly

<?php
/*
tcp dns client for google dns over https (https://dns.google.com)

ubuntu上使用:
在/etc/rc.local里加/usr/bin/php /home/<your_name>/dns2https.php

执行:
sysv-rc-conf unbound off
sysv-rc-conf dnscrypt-proxy off

rainly

My Git Action Sets & Tutorial

Init the git repo

• git clone <url> [path]
• git init

Trouble-Free Actions