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不到20个积木块，我用App Inventor 2给女儿做了个接星星小游戏 - App应用开...
...已经实现了矩形碰撞检测。
踩过的坑
坑1：Z坐标的问题
一开始篮子和星星重叠时，星星显示在篮子上面，看起来像是星星穿过了篮子。后来设置了 Basket.Z坐标 为2，Star.Z坐标 为1，让篮子始终显示在前层，视觉上就像稳稳...
开源跳板机(堡垒机)Jumpserver v2.0.0 使用说明 - 开源 & Github - 清泛网 ...
...户信息，删除用户，回收权限没有讲解，自己试试吧，有问题可以群里讨论，Jumpserver是一个年轻的项目，可能存在一些BUG，需要您的及时反馈，帮助我们一起完善项目！
本文出自 “Free Linux, Share Linux” 博客，请务必保留此...
App Inventor 2 UrsAI2UDP 拓展 - UDP广播通信协议 · App Inventor 2 中文网
...设备标识符。然后，接收器会过滤掉它感兴趣的设备。
问题是：App Inventor 没有内置 UDP，而且我找不到可用的扩展。所以自己动手吧。
注意：
如果智能手机和远程站位于同一个（本地）网络中，则扩展可以完美运行。如果智...
Sending POST data in Android
I'm experienced with PHP, JavaScript and a lot of other scripting languages, but I don't have a lot of experience with Java or Android.
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Query-string encoding of a Javascript Object
...mp;bar=100%25
Edit: this one also converts recursive objects (using php "array" notation for the query string)
serialize = function(obj, prefix) {
var str = [],
p;
for (p in obj) {
if (obj.hasOwnProperty(p)) {
var k = prefix ? prefix + "[" + p + "]" : p,
v...
ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
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ComponentGroup 扩展解决了 App Inventor 中的两个常见问题：
内容变化检测：无需使用复杂的定时器和值比较即可检测组件内容是否被修改
批量启用/禁用：一次性启用或禁用一组组件（例如在考试期间禁用输入区域）
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Why do people say that Ruby is slow? [closed]
...me:
Ruby 1.9 vs. Python3 within the same order of magnitude
Ruby 1.9 vs. PHP within the same order of magnitude
Ruby 1.9 vs. Java 6 server up to two orders of magnitude slower!
Ruby 1.9 vs. C (gcc) up to two orders of magnitude slower!
...
Why is Ruby considered slow?
Depends on whom you as...
解决 Error 503: The specified address is not a valid Bluetooth MAC add...
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本例中就是经典蓝牙，但是用的 ble 的方式显示导致的问题。
Pros and Cons of Interface constants [closed]
PHP interfaces allow the definition of constants in an interface, e.g.
2 Answers
2
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Fat models and skinny controllers sounds like creating God models [closed]
...rcing law and order on large scale applications.
For people who are using PHP as primary language, this post might be relevant. It's a bit longer description of the model layer with a few snippets of code.
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