HenryJia

import numpy as np
import gym

def sigmoid(x):
    return 1.0 / (1.0 + np.exp(-x))

env = gym.make('CartPole-v1')
desired_state = np.array([0, 0, 0, 0])
desired_mask = np.array([0, 0, 1, 0])

bitsurgeon

Embed YouTube Video in Markdown File

1. Markdown style

[![Watch the video](https://img.youtube.com/vi/nTQUwghvy5Q/default.jpg)](https://youtu.be/nTQUwghvy5Q)

2. HTML style

<a href="http://www.youtube.com/watch?feature=player_embedded&v=nTQUwghvy5Q" target="_blank">

zenthangplus

#!/usr/bin/env bash

# Error example: 
# ERROR: for redis cannot stop container: 16028f9: 
# Cannot kill container 16028f9: unknown error after kill: docker-runc did not terminate sucessfully: 
# container_linux.go:393: signaling init process caused "permission denied"
#
# This error was caused by AppArmor service in Ubuntu
# It was not working normally due to some unknown issues.
# Run following commands to fix it.

SeppPenner

Installing Python 3.7.4 on Raspbian

As of July 2018, Raspbian does not yet include the latest Python release, Python 3.7.4. This means we will have to build it ourselves, and here is how to do it.

1. Install the required build-tools (some might already be installed on your system).

simonhamp

<?php

namespace App\Providers;

use Illuminate\Support\Collection;
use Illuminate\Pagination\LengthAwarePaginator;

class AppServiceProvider extends ServiceProvider
{
    public function boot()

mikejolley

<?php // Do not include this if already open!

/**
 * Code goes in theme functions.php.
 */
add_filter( 'woocommerce_defer_transactional_emails', '__return_false' );

YuMS

#!/bin/bash
sudo add-apt-repository -y ppa:git-core/ppa
sudo apt-get update
sudo apt-get install git -y