大约有 48,000 项符合查询结果(耗时:0.0501秒) [XML]

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提问 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

     使用下面程序时,为什么每次都会把实际数字设为0? 问题出在你的判断逻辑上: 这里和你拼接的字符串比较,非常容易出错,比如多了或少了一个空格等。实际编程中判断最好使用数字,也就是你选择了...
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最大装载数不显示计算数值 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

计算公示如下: (排数输出-高数输出)×横数输出+(高数输出×横数输出)÷2=最大装载数 出现问题不显示计算数字代码块没有问题,经过测试是能够正确计算出除法结果的,测试时主要被除数要大于除数,否则计算结果0.x...
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菜品识别的API有哪些? - App应用开发 - 清泛IT社区,为创新赋能!

目前找到的有百度和阿里,做菜品识别api,文档地址分别如下: 百度云:https://cloud.baidu.com/doc/IMAGERECOGNITION/s/tk3bcxbb0 阿里云:https://help.aliyun.com/zh/viapi ... a2c4g.11186623.0.i0 ------------------------- 食物营养成分识别:https://www.tian...
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AppInventor2画布的坐标原点是哪里? - App应用开发 - 清泛IT社区,为创新赋能!

Q:AppInventor2画布的坐标原点在哪里,是中心吗? A:画布的左上边缘是 0,0 原点。
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低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 低功...
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Async Procedures 拓展:异步任务拓展,异步处理耗时任务 - App Inventor 2...

...u no longer have to wait for a loop to finish and don’t worry about your app Crashing due to Android System thinking that your app crashed while doing intense processes.BLOCKS:EVENTS : [color=var(--tertiary)][color=var(--secondary)]Capture[color=var(--secondary-high)]352×100 4.28 KB FUNCTIONS...
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Connection timeout for SQL server

... Yes, you could append ;Connection Timeout=30 to your connection string and specify the value you wish. The timeout value set in the Connection Timeout property is a time expressed in seconds. If this property isn't set, the timeout value f...
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c# open a new form then close the current form?

...he case where form1 was created in Main, form2 can simply be created using Application.Run just like form1 before. Here's an example scenario: I need the user to enter their credentials in order for me to authenticate them somehow. Afterwards, if authentication was successful, I want to show the ma...
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How to refresh / invalidate $resource cache in AngularJS

...ch you can have more control over (i.e. clear the cache). Example usage: app.factory('Todos', function($resource, $cacheFactory) { var cache = $cacheFactory('todo'); return $resource(apiBaseUrl + '/todos/:id', { id: '@id' }, { 'get': { method: 'GET', cache: cache }, 'query...
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云数据及Firebase组件简介 · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 云数...