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https://www.fun123.cn/reference/iot/MQTT.html 

App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网

...位:秒),定义客户端等待与 MQTT 服务器建立网络连接的最大时间间隔。默认超时为 30 秒。值为 0 表示禁用超时处理,这意味着客户端将一直等待,直至网络连接成功或失败。 TimeToWait - 等待时间 设置控制权返回给调用App之...
https://www.tsingfun.com/it/tech/1728.html 

完美解决phpcms批量移动内容后,新闻心情、评论排行等不更新的问题 - 更多...

完美解决phpcms批量移动内容后,新闻心情、评论排行等不更新的问题问题描述:phpcms批量移动内容 文章,批量更新URL -> "批量更新内容页"后,发现原内容的评论、新闻心情全部丢失,这还不算差,后台评论排...问题描述: phpcms...
https://www.tsingfun.com/it/cp... 

C++常用排序算法汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术

...初始化大根堆 * 将堆顶和最后一个元素交换,得到一个最大值 * 通过不断的调整大根堆,得到排序后的数组 * * https://www.tsingfun.com ************************************/ #include<stdio.h> #include<stdlib.h> /* arr[start+1...end]满足最大堆...
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How to install APK from PC?

I want to install an APK from PC to Android device. And because of user's Android and generally technical skills, I need to do it as automatically (silently) as possible. So how do I send an APK from PC to Android and start install there? ...
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Simulator or Emulator? What is the difference?

...ht-emulator. An emulator can replace the original for real use. A Virtual PC emulates a PC. A simulator is a model for study and analysis. An emulator will always have to operate close to real-time. For a simulator that is not always the case. A geological simulation could do 1000 years/secon...
https://www.tsingfun.com/ilife/tech/678.html 

离开1号店 于刚再创业钟情“互联网+” - 资讯 - 清泛网 - 专注C/C++及内核技术

...大变化,沃尔玛对1号店增加投资,持股提高至约51%,成最大股东。 当时几乎大家都认为沃尔玛会撤换1号店创始人团队,然而在沃尔玛控股1号店之初,并未对1号店的创始人团队做太大调整。之后的数年内,沃尔玛几乎并没有与...
https://www.tsingfun.com/it/cpp/2085.html 

MFC中ComboBox控件的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

...整框。 2,二、属性里有个 No integral height 钩选项,表示最大长度为设计长度,如果实际内容比设计长度多,就出现滚动条,少就以实际长度显示。 三、选择其中的某行 1,选中: intiPos=((CComboBox*)GetDlgItem(IDC_COMBO_CF))->GetCurSel(...
https://www.tsingfun.com/it/te... 

phpcms标签向导有什么用? - 更多技术 - 清泛网 - 专注C/C++及内核技术

phpcms标签向导有什么用?phpcms_tag_guide_instructionsphpcms标签向导有什么用?不用手写V9标签调用语法,也能根据向导配置出所需数据的代码。一、简介 使用标签向导,让你在不太了解系统标签的情况下,也能按配置向导调取自己想...
https://www.tsingfun.com/it/tech/2468.html 

js/php判断终端类型:PC访问、手机访问、微信访问 - 更多技术 - 清泛网 - ...

js/php判断终端类型:PC访问、手机访问、微信访问一般也可以在前端用js来判断访问终端,代码如下:<script>function GetQueryString(name) { var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); v 一般也可以在前端用js来判断访问终端,代码...
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?

...uple&gt; comments = entityManager.createNativeQuery(""" SELECT pc.id AS id, pc.review AS review, pc.post_id AS postId FROM post_comment pc """, Tuple.class) .getResultList(); And, later, you decide to fetch the associated post title for each post_comment: for (...