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AppInventor2列表排序，函数式编程轻松实现高级排序算法 - App Inventor 2 ...
...就是某个人的对象，如["张三","学生","10"]，它本身也是一个列表，我们要把第三个元素也就是年龄至拿出来作比较。
只要把比较的逻辑反一下，排序的顺序也会相反，变成了降序。
有了这种排序方...
我使用MQTT扩展控制主板，在AI伴侣里面运行的很好，在导出apk里面没有反应...
...台可以收到，主控板灯不变色13582001974 发表于 2024-09-25 11:10
mind+发送端发送命令MQTT平台接受到之后，需要将命令通过蓝牙传给主控板，主控板根据命令控制灯的颜色。
没 ...
你要先确认一下命令首先蓝牙有没有收到，如果收到...
如何更改启动屏幕 - App应用开发 - 清泛IT社区，为创新赋能！
...面各元素复制进screen1，完美解决。引用:hjtao 发表于 2024-10-18 13:38
用方法1，复制后，再将原制作的login页面各元素复制进screen1，完美解决。
{:8_389:}是的，组件及代码块都是可以拷贝粘贴的，组件拷贝的时候连同相关的代码块事...
请问输入文件要往哪放? - App应用开发 - 清泛IT社区，为创新赋能！
...将文件存在开发者指定的目录下。谢谢！Sban 发表于 2024-10-24 16:13
实际上我需要的是最好输入和输出是同一个文件，程序结束时保存一下。APP Inventor有没有可能允许将文件存在 ...
1、文件管理器默认范围为App，读写文件名诸如 &q...
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！
... ":", padZero(secs) )
to padZero num
if num < 10
return join strings("0", num)
else
return num
怎么都不会了
目前ai生成的逻辑仅供参考，还达不到自动转换代码块的程度。AI自动生成...
AngularJS - Create a directive that uses ng-model
...ovements.
It's actually pretty good logic but you can simplify things a bit.
Directive
var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.model = { name: 'World' };
$scope.name = "Felipe";
});
app.directive('myDirective', function($compile) {
r...
How to get index in Handlebars each helper?
...|
edited Jul 29 '13 at 21:10
Fabrício Matté
63.8k2222 gold badges114114 silver badges156156 bronze badges
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Why generate long serialVersionUID instead of a simple 1L?
...update the serial number.
If you do not have to be compatible to existing bit streams, you can just put 1L there and increment the version as needed when something changes. That is, when the default serialisation version of the changed class would be different from the default version of the old cl...
When to use a key/value store such as Redis instead/along side of a SQL database?
...
@zenw0lf Good article but I still get a bit confused in some use case. For example the "latest item" use case, why is it better to add Redis in this case? what is in database we add in a specific table just to have user id, comment(id), and/or timestamp, and use th...
How to handle screen orientation change when progress dialog and background thread active?
...f dialogs and restore then across the Activity life-cycle events. Relevant bits of Activity code are below. You'll also need logic in your BroadcastReceiver to handle Sticky intents appropriately, but that is beyond the scope of this.
public void doSignIn(View view) {
waiting=true;
AppClass...