wangzuo

openssl

• https://www.openssl.org/source/
• https://wiki.openssl.org/index.php/Compilation_and_Installation
• ./config shared zlib-dynamic && make && make install
• /usr/local/ssl
• /usr/local/include/openssl

nginx

• http://nginx.org/en/download.html
• `./configure —user=nginx —group=nginx —prefix=/etc/nginx —sbin-path=/usr/sbin/nginx —modules-path=/usr/lib/nginx/modules —conf-path=/etc/nginx/nginx.conf —error-log-path=/var/log/nginx/error.log —http-log-path=/var/log/nginx/access.log —pid-path=/var/run/nginx.pid —lock-path=/var/run/nginx.lock —http-client-body-temp-path=/var/cache/nginx/client_temp —http-proxy-temp-path=/var/cache/nginx/proxy_temp —http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp —http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp —http-scgi-temp-path=/var/cache/nginx/scgi_temp —user=nginx —group=nginx —with-compat —with-file-aio —with-threads —with-http_addition_module —with-http_auth_request_module —with-http_dav_module —with-http_flv_module —with-http_gunzip_module —with-htt

wangzuo

Rails mailer guide

Notice

• email styling is hard outlook-margins
• url helper
• config.action_mailer.asset_host
• assets:precompile on sidekiq server
• <img alt="" /> with image disabled by default
• encrypt helper for token

wangzuo

brew

• brew install dnsmasq
• brew install nginx

dnsmasq

# /usr/local/etc/dnsmasq.conf
no-dhcp-interface=
server=8.8.8.8
addn-hosts=/usr/local/etc/dnsmasq.hosts

wangzuo

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  TextInput,
  Button
} from 'react-native';
import defaultValidations from './react-reform/opt/validations';

wangzuo

### Keybase proof

I hereby claim:

  * I am wangzuo on github.
  * I am wangzuo (https://keybase.io/wangzuo) on keybase.
  * I have a public key ASDILDRXcYHkQy6BMHRZifQ9sx63vh2ezWuskninGdITzwo

To claim this, I am signing this object:

wangzuo

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

wangzuo

// @flow
export opaque type AccountBalance = number;
export opaque type AccountNumber: number = number;
export opaque type PaymentAmount: number = number;
// export opaque type AccountNumber = number;
// export opaque type PaymentAmount = number;

type Account = {
  accountNumber: AccountNumber,
  balance: AccountBalance,

wangzuo

export interface IRPCProvider {
  getNetVersion(): Promise<string>;
  ping(): Promise<boolean>;
  getBalance(address: string): Promise<Wei>;
  estimateGas(tx: Partial<IHexStrTransaction>): Promise<Wei>;
  getTransactionCount(address: string): Promise<string>;
  getTransactionByHash(txhash: string): Promise<TransactionData>;
  getTransactionReceipt(txhash: string): Promise<TransactionReceipt>;
  sendRawTx(tx: string): Promise<string>;
  sendCallRequest(txObj: TxObj): Promise<string>;

wangzuo

GitHub.prototype.writeFile = function (filePath, data, branch, commitTitle) {
  branch = branch || this.options.branch
  commitTitle = commitTitle || 'Add Staticman file'

  return this.api.repos.createFile({
    user: this.options.username,
    repo: this.options.repository,
    path: filePath,
    content: Buffer.from(data).toString('base64'),
    message: commitTitle,

wangzuo

// Minimum Absolute Difference in an Array
// comparing each pair O(n^2)
// sort first O(nlogn) + O(n)
exports.mad = function(arr) {
  const a = arr.sort((a, b) => a - b);
  let min = -1;

  for (let i = 0, l = a.length; i < l - 1; i++) {
    const d = Math.abs(a[i] - a[i + 1]);
    if (min < 0 || d < min) {