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Split list into smaller lists (split in half)
...6]
B = A[:len(A)//2]
C = A[len(A)//2:]
If you want a function:
def split_list(a_list):
half = len(a_list)//2
return a_list[:half], a_list[half:]
A = [1,2,3,4,5,6]
B, C = split_list(A)
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视觉AI（HarmonyVisionAI）使用指导 · App Inventor 2 中文网
...误信息
}
案例二：物体检测
when 按钮_物体.Click() {
HarmonyVisionAI1.DetectObjects("objects.jpg")
}
when HarmonyVisionAI1.ObjectsDetected(结果JSON) {
标签1.Text = 结果JSON
}
参数与返回值速查
JSON 参数是文本，...
AsyncProcedures异步过程扩展 · App Inventor 2 中文网
...
下载和安装
AsyncProcedures扩展: co.sgext_.asyncprocedure.aix
开发动机
Async Proc是一个扩展，您可以使用它来异步运行过程。您不再需要等待循环完成，也不必担心由于Android系统认为您的应用程序...
month name to month number and vice versa in python
...calendar module:
import calendar
{v: k for k,v in enumerate(calendar.month_abbr)}
Before Python (2.7+) you would do
dict((v,k) for k,v in enumerate(calendar.month_abbr))
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Adding header for HttpURLConnection
...oder().encodeToString((username+":"+password).getBytes(StandardCharsets.UTF_8));
httpConn.setRequestProperty ("Authorization", "Basic "+basicAuth);
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How to flip UIImage horizontally?
...anymore, at least with camera taken pictures...
– Oni_01
Jun 25 '19 at 14:22
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Switching to a TabBar tab view programmatically?
...
Like Stuart Clark's solution but for Swift 3:
func setTab<T>(_ myClass: T.Type) {
var i: Int = 0
if let controllers = self.tabBarController?.viewControllers {
for controller in controllers {
if let nav = controller as? UINavigationController, nav.topViewCont...
Class 'DOMDocument' not found
...dom in Configure Command, what should i do next?
– ws_123
Jan 18 '13 at 9:38
That depends on your system. Worst case y...
UITableViewCell Separator disappearing in iOS7
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I dumped the subview hierarchy of affected cells and found that the _UITableViewCellSeparatorView was set to hidden. No wonder it's not shown!
I overrode layoutSubviews in my UITableViewCell subclass and now the separators are displayed reliably:
Objective-C:
- (void)layoutSubviews {
[...
How do I generate random numbers in Dart?
...0.9 ... the result would be for example -0.32
– just_a_dude
Nov 7 '13 at 13:59
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