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How to setup Let's Encrypt for Nginx on Ubuntu 16.04 (including IPv6, HTTP/2 and A+ SLL rating)

There are two main modes to run the Let's Encrypt client (called Certbot):

• Standalone: replaces the webserver to respond to ACME challenges
• Webroot: needs your webserver to serve challenges from a known folder.

Webroot is better because it doesn't need to replace Nginx (to bind to port 80).

In the following, we're setting up mydomain.com. HTML is served from /var/www/mydomain, and challenges are served from /var/www/letsencrypt.

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/*
 * {{{ header & license
 * Copyright (c) 2008 Patrick Wright
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,

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SELECT COALESCE(SUM(total),0)  FROM material

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/**
 * Be sure to include library scripts in this order. Can be placed either
 * in the header or footer.
 */
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-infinitescroll/2.0b2.120519/jquery.infinitescroll.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/masonry/3.1.2/masonry.pkgd.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery.imagesloaded/3.0.4/jquery.imagesloaded.min.js"></script>

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Usually, we generate an entity class with Editor->Create NSManagedOBject Subclass... For example we created a subclass of NSManagedObject

Xcode generates the .h file like this:

@interface MyEntity : NSManagedObject

@property (nonatomic, retain) NSOrderedSet manySubs;

//... some methods generated by Xcode

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	public void cPostLocation(Context context, int mtype,
			List<DBLocationVO> location,
			AsyncHttpResponseHandler responseHandler) {
		Util.authCilent(context, client);
		int userId = UserInfo.getInstance().getUserId(context);
		StringEntity entity = null;
		try {
			entity = new StringEntity(JSON.toJSONString(location), "UTF8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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-optimizationpasses 5                                                           # 指定代码的压缩级别
-dontusemixedcaseclassnames                                                     # 是否使用大小写混合
-dontskipnonpubliclibraryclasses                                                # 是否混淆第三方jar
-dontpreverify                                                                  # 混淆时是否做预校验
-keepattributes SourceFile,LineNumberTable										                  # 混淆号错误信息里带上代码行
-verbose                                                                        # 混淆时是否记录日志
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*        # 混淆时所采用的算法

-libraryjars libs/android_api.jar
-libraryjars libs/baidumapapi_v2_2_0.jar

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// Copyright 2012 Square, Inc.
package com.squareup.widgets;

import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.ImageView;

/** Maintains an aspect ratio based on either width or height. Disabled by default. */
public class AspectRatioImageView extends ImageView {