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Is quitting an application frowned upon?
... BACK button does not "kill the app". It finishes the activity that was on-screen when the user pressed the BACK button.
It should only terminate when the
users want to terminate it - never
ever any other way. If you can't write
apps that behave like that in Android,
then I think that Android can't...
What is the difference between atan and atan2 in C++?
...eturn negative numbers, so you can't trace things in the 4 directions on a screen just by adding/subtracting its result.
atan2 is intended for the origin to be in the middle, and things can go backwards or down. That's what you'd use in a screen representation, because it DOES matter what direction...
UICollectionView current visible cell index
... especially well when each item in your collection view takes up the whole screen.
Swift version
let visibleRect = CGRect(origin: collectionView.contentOffset, size: collectionView.bounds.size)
let visiblePoint = CGPoint(x: visibleRect.midX, y: visibleRect.midY)
let visibleIndexPath = collect...
What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
...o send data on in the pipe line, but not necessarily want to display it on screen. The pipeline will eventually write it to out-default if nothing else uses it first.
Write-Host should be used when you want to do the opposite.
[console]::WriteLine is essentially what Write-Host is doing behind th...
Calling Objective-C method from C++ member function?
... "fonts/Marker Felt.ttf", 24);
// position the label on the center of the screen
label->setPosition(Vec2(origin.x + visibleSize.width/2,
origin.y + visibleSize.height - label- >getContentSize().height));
// add the label as a child to this layer
this->addChild(label...
Rich vs Anemic Domain Model [closed]
...I use JPA 2.1 named entity graph. For example, in controller for delivery screen, I can create method to load delivery attribute and ignore bonus, such as repository.findOrderByNumberFetchDelivery(). In bonus screen, I call another method that load bonus attribute and ignore delivery, such as repo...
How do you clear the focus in javascript?
...expert on the best way to do that; but you could certainly position it off-screen or outside of the bounds of an overflow: clip styled element. But you could just use a field that already exists on the page. Or create one just for the purpose and remove it again.
– Kevin Reid
...
解决：apache2.service: Failed to run \'start\' task: No such file or d...
...-to-run-start-task-no-such-file-or-directory今天重启apache2时，出现一个错误：apache2 service: Failed to run & 39;start& 39; task: No such file or directory。原因是：& 39; var tmp& 39;目录被删掉了导致的。mkdir var tmp 搞定。今天 systemctl reload apache2.service 重...
Homebrew作者解不出面试题，被Google拒绝 - 创意 - 清泛网 - 专注C/C++及内核技术
...载软件包。近日，其作者在进入Google的面试中，因解不出一个二叉 Homebrew是Mac上一套流行的软件包管理工具，可以通过命令行搜索、安装、卸载软件包。近日，其作者在进入Google的面试中，因解不出一个二叉树翻转的问题，直...
6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术
...源代码下面的所有程序都可以在GCC下编译通过，只有最后一个需要动用C++...下面的六个程序片段主要完成这些事情：
1、输出Hello, World
2、混乱C语言的源代码
下面的所有程序都可以在GCC下编译通过，只有最后一个需要动用C+...