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【解决】App Inventor 2 中文版服务启动超时，问题排查 - App Inventor 2 ...
离线版启动失败，报超时错误：
可能性排查如下：
1、安装目录有中文，卸载重新安装，目录不要有中文即可，当然最好也不要有空格。这个逻辑也考虑过做到安装时自动检查，目前有技术细节没解决，后续会继续研究。
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蓝牙客户端组件的接收字节用于判断的问题 - 创客硬件开发 - 清泛IT社区，为...
Q：这种格式对吗？
A：
1、首先数字等于，后面要用数字，a0 是16进制的。
2、第二，a0 一般占一个字节，如果你确定发送来的是2个字节，才能使用双字节的接收方法。
参考中文文档：https://www.fu...
串口Read不到数据的问题 - 用户反馈 - 清泛IT社区，为创新赋能！
用户发送的是 8n1 的格式，但是ai2的串口貌似不支持这种格式。写串口正常，读串口为空，len为0。
目前经过测试验证，应该是 \n 作为结束符的。发送时，也是。
ai2使用 physicaloid 库完成的串口功能。
What is the direction of stack growth in most modern systems?
...s, for example, runs on x86 and SPARC. Mac OSX (as you mentioned) runs on PPC and x86. Linux runs on everything from my big honkin' System z at work to a puny little wristwatch.
If the CPU provides any kind of choice, the ABI / calling convention used by the OS specifies which choice you need to ma...
How can I get the active screen dimensions?
...var bounds = this.GetScreen().WorkingArea; this.Left = bounds.Right - this.Width; But it requires references to System.Windows.Forms and System.Drawing, which is not ideal.
– Anthony
Apr 3 '09 at 8:42
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致PHP路上的“年轻人” - PHP - 清泛IT社区，为创新赋能！
...一位刚做PHP工作一年的朋友聊了甚久。他与他们有一样的问题，比较迷茫。而我当年也有他们的困惑。虽然自己也还年轻，但作为一个阶段告以段落的“过来人”，还是想写点东西给“年轻人”。关于如何成长？我直白的答案还...
Is a DIV inside a TD a bad idea?
... how the elements will be sized. The default for a div is to determine its width from its parent, and the default for a table cell is to determine its size depending on the size of its content.
The rules for how a div should be sized is well defined in the standards, but the rules for how a td shou...
CSS3 Rotate Animation
...
.image {
position: absolute;
top: 50%;
left: 50%;
width: 120px;
height: 120px;
margin:-60px 0 0 -60px;
-webkit-animation:spin 4s linear infinite;
-moz-animation:spin 4s linear infinite;
animation:spin 4s linear infinite;
}
@-moz-keyframes spin { 10...
Select arrow style change
...th a custom arrow similar to Julio's answer, however it doesn't have a set width and uses an svg as a background image. (arrow_drop_down from material-ui icons)
select {
-webkit-appearance: none;
-moz-appearance: none;
background: transparent;
background-image: url("data:image/svg+xml;utf8,...
Sublime Text 2: How to delete blank/empty lines
...
Select the text
Press:
Ctrl + H on PC, or
Command + Alt + F on Mac or
Click Find->Replace.
Make sure you have selected 'regular expression' by pressing:
Alt + R on PC or
Command + Alt + R on Mac or
Click .* in the Find box.
Find what: ^\n or ^(\r|\n\r?)
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