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Recommended way to stop a Gradle build
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are there any nice syntax options here? Consider kotlin's preconditions syntax: require(something != whatever) { "No good!" } as opposed to the more verbose and type-ee if(something != whatever){ throw new GradleException("No good!") }
– Groostav
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关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...络通信的机制，这属于计算机网络这块的东西，与实际的编程没有太大的关联，这里就不深入说明了，有兴趣的可以问度娘。而从程序的角度来看，这样的理解更合适，
socket起源于Unix，而Unix/Linux基本哲学之一就是“一切皆文...
How do you close/hide the Android soft keyboard using Java?
...e it to appear (by holding down the menu).
Note: If you want to do this in Kotlin, use:
context?.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
Kotlin Syntax
// Check if no view has focus:
val view = this.currentFocus
view?.let { v ->
val imm = getSystemService(Context.I...
Is there a way to define a min and max value for EditText in Android?
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Kotlin if any one needs it (Use Utilities)
class InputFilterMinMax: InputFilter {
private var min:Int = 0
private var max:Int = 0
constructor(min:Int, max:Int) {
this.min = min
this.max = max
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Storing R.drawable IDs in XML array
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kotlin way could be this:
fun Int.resDrawableArray(context: Context, index: Int, block: (drawableResId: Int) -> Unit) {
val array = context.resources.obtainTypedArray(this)
block(array.getResourceId(index, -1))
arra...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...对地址。相对地址有很好多处，其可以玩出一些有意思的编程技巧，比如把C搞出面向对象式的感觉来，你可以参看我正好11年前的文章《用C写面向对像的程序》（用指针类型强转的危险玩法——相对于C++来说，C++编译器帮你管...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
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按照Postfix+Cyrus-IMAP+Cyrus-SASL+MySQL+IMP（王兴宇的）完全指南进行到了步骤8.5 ,用cyradm创建邮箱,可是却出现了如下错误:
[root@localhost bin]# cyradm --user cyrus localhost
Can't load '/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi/auto/Cyrus/IMAP/IMA...
IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
... a little for my own project, here is what I do using LifeCycle. I code in Kotlin.
val hostActivity: AppCompatActivity? = null // the activity to host fragments. It's value should be properly initialized.
fun dispatchFragment(frag: Fragment) {
hostActivity?.let {
if(it.lifecyclecurrent...
【AI2+AI】人工智能舞姿识别App - 创客硬件开发 - 清泛IT社区，为创新赋能！
...外观和感觉。但不要重命名组件，因为本教程会使用操作指南中给出的名称。SwapCameraButton按钮可以根据用户的意愿切换前置或后置摄像头。CanvasLiveButton将画布背景从纯黑色切换到实时摄像机视图。ResetButton设置Dance Score得分为零...
How to test that no exception is thrown?
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Java 8 makes this a lot easier, and Kotlin/Scala doubly so.
We can write a little utility class
class MyAssertions{
public static void assertDoesNotThrow(FailingRunnable action){
try{
action.run()
}
catch(Exception ex){
throw new Err...