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App Inventor 2 网络微数据库你用对了吗？ - App Inventor 2 中文网 - 清泛...
...度会很慢，而且它没有命名空间的概念，即所有人使用同一个空间，这就导致如果A用户保存了一个键“test”，值为“123”，B用户接着又保存键“test”值为“456”，那么这时A用户如果获取键“test”，这时它的值就是456。也就是...
【转】AppInventor2 在同一屏幕内制作页面滑动切换效果 - App应用开发 - 清...
...幕，否则回到原屏幕。我们今天就参照微信的界面制作的一个应用组件如下：设计如下：第一列的列表显示框中联系人1到联系人20用于模拟微信内的联系人，可以垂直滚动。剩下三列为了能够更好地看到切换效果而设置成不同的...
App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
...切换到MQTT云：
输入名称（例如：APPMQTT），新建一个订阅主题：
MQTT客户端测试工具，下载地址：https://mqttx.app/zh/downloads
启动MQTTX客户端测试工具，设置语言为中文：
配置和App一样的连接参...
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), ":",...
Determine if Python is running inside virtualenv
Is it possible to determine if the current script is running inside a virtualenv environment?
16 Answers
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GDB missing in OS X v10.9 (Mavericks)
I went to use GDB in OS X v10.9 (Mavericks), and it's not there. Where has it gone?
12 Answers
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How to print a list of symbols exported from a dynamic library
...been trying to get dynamic libraries to work in my XCode project under Mac OS X. So far no joy.
4 Answers
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NSLog the method name with Objective-C in iPhone
...happens to be implemented as a C-string (as of the current versions of Mac OS X and the iPhone OS) doesn't mean you should use it in that way, since Apple could change it in an OS update.
– Nick Forge
May 5 '10 at 8:06
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Java: PrintStream to String?
...is function's output in a String? Specifically, I want to use it as in a toString method.
5 Answers
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Where can I find “make” program for Mac OS X Lion?
Just upgraded my computer to Mac OS X Lion and went to terminal and typed "make" but it says:
-bash: make: command not found
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