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为什么会提示AppInventor2.exe 不是有效的 Win32 - App Inventor 2 离线版 ...
本帖最后由 lmn2005 于 2025-04-15 18:35 编辑
电脑系统为64位win7,安装AppInventor2后运行,提示C:\AppInventor2\AppInventor2.exe 不是有效的 Win32 应用程序 这是为什么?
https://aka.ms/vs/16/release/vc_redist.x64.exe
装一个运行环境试试,如果还...
想试着做一个间歇运动的计时器 - App应用开发 - 清泛IT社区,为创新赋能!
本帖最后由 碳水哥斯拉 于 2025-05-08 23:37 编辑
用deepseek生成了代码 使用AI2 遇到了问题
to formatTime seconds
set minutes to (seconds / 60)
set secs to (seconds - (minutes * 60))
return join strings( padZero(minutes), ":",...
Modbus硬件控制01——什么是Modbus - 创客硬件开发 - 清泛IT社区,为创新赋能!
本帖最后由 mzb2012 于 2025-06-19 12:37 编辑
Modbus算是嵌入式领域比较经典一种通信协议,不管你是初学者,还是工作多年的工程师,都很有必要了解一下。1.什么是Modbus?1.什么是Modebus它是一个Bus,即总线协议。比如串口协议、IIC...
ActionBar 拓展:溢出菜单 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
...默认情况下,App Inventor 并没有直接提供一个图形组件来编辑这个菜单,但我们可以使用 "ActivityStarter" 或通过调用系统菜单事件来实现自定义内容哦!
✅ 实现方法:使用 Screen 的 OptionsMenu 相关事件
App Inventor 提供了两...
Modbus硬件控制02——modbus继电器 - 创客硬件开发 - 清泛IT社区,为创新赋能!
本帖最后由 mzb2012 于 2025-07-15 12:26 编辑
一、概述
该模块是一款以专用集成电路为核心的经济型MODBUS-485继电器模块,实现了标准MODBUS-485通信功能。它可以与9V,12V或24V电压配合使用。本模块支持所有常见波特率、停止位和校验...
Getting started with Haskell
...second this. Also, since it's not obvious, here's a link to a downloadable pdf version of the tutorial: learnyouahaskell.com/learnyouahaskell.pdf The webdesign is great, but I like to have a copy for the subway too.
– Telemachus
Jun 18 '09 at 13:25
...
/data/user/0/xxxx/files(内部存储)和 /storage/emulated/0/Android/data...
...册应用可能将缓存图片放在此处,用户能看到但无法直接编辑。
内部存储:
完全对用户隐藏,即使启用“显示隐藏文件”也无法查看。
(2) 媒体扫描外部存储私有目录:
默认会被媒体扫描器(MediaStore)忽略,文件不会出现...
No visible cause for “Unexpected token ILLEGAL”
...so could be happening if you're copying code from another document (like a PDF) into your console and trying to run it.
I was trying to run some example code out of a Javascript book I'm reading and was surprised it didn't run in the console.
Apparently, copying from the PDF introduces some unexpe...
How to perform better document version control on Excel files and SQL schema files
...
[diff "xls"]
binary = true
textconv = /usr/bin/py_xls2txt
[diff "pdf"]
binary = true
textconv = /usr/bin/pdf2txt
[diff "doc"]
binary = true
textconv = /usr/bin/catdoc
[diff "docx"]
binary = true
textconv = /usr/bin/docx2txt
The Pro Git book has a good chapter on t...
Programmatically creating Markdown tables in R with KnitR
... Yes, nope. Will work with Markdown-->HTML but not with Markdown-->PDF, Markdown-->DOCX ... The question is about using Markdown in general not only for the purpose of creating HTML files with it -- might have been your intention, but is not written down there.
– pet...