大约有 800 项符合查询结果（耗时：0.0261秒） [XML]
How to get the first element of the List or Set? [duplicate]
...wed by or encapsulated within the appropriate checks or try-catch blocks.
Kotlin:
In Kotlin both Arrays and most of the Collections (eg: List) have a first method call.
So your code would look something like this
for a List:
val stringsList: List<String?> = listOf("a", "b", null)
val first...
String variable interpolation Java [duplicate]
...
You can use Kotlin, the Super (cede of) Java for JVM, it has a nice way of interpolating strings like those of ES5, Ruby and Python.
class Client(val firstName: String, val lastName: String) {
val fullName = "$firstName $lastName"...
App Inventor 2 列表代码块 · App Inventor 2 中文网
...块的教程。
用法案例：《App Inventor 2 列表排序，函数式编程轻松实现高级排序算法》。
创建带比较器的有序列表
按照块主体指定的顺序对输入列表进行排序，创建一个新列表。
该块的主体是一个涉及 item1...
How to iterate through SparseArray?
...
For whoever is using Kotlin, honestly the by far easiest way to iterate over a SparseArray is: Use the Kotlin extension from Anko or Android KTX! (credit to Yazazzello for pointing out Android KTX)
Simply call forEach { i, item -> }
...
Determining the size of an Android view at runtime
...uper.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
If you write in Kotlin, you can use the next function, which behind the scenes works exactly like runJustBeforeBeingDrawn that I've written:
view.doOnPreDraw { actionToBeTriggered() }
Note that you need to add this to gradle (found via he...
passing argument to DialogFragment
... String nameFav = mArgs.getString("fav_name");
String name = "";
// Kotlin upload
val fm = supportFragmentManager
val dialogFragment = AddProgFargmentDialog() // my custom FargmentDialog
var args: Bundle? = null
args?.putString("title", model.title);
dialogFr...
Getting the class name from a static method in Java
...yntax.
It can be really handy in some cases, e.g. logger instance for the kotlin upper-level functions (in this case kotlin creates a static Java class not accessible from the kotlin code).
We have a few different variants for getting this info:
new Object(){}.getClass().getEnclosingClass();
not...
Spring MVC: Complex object as GET @RequestParam
...uest:59 - criteria: SearchDTO[id={353,234}]
I hope it helps :)
UPDATE / KOTLIN
Because currently I'm working a lot of with Kotlin if someone wants to define similar DTO the class in Kotlin should have the following form:
class SearchDTO {
var id: Array<Long>? = arrayOf()
override...
Ubuntu下CodeBlock开发环境配置 - C/C++ - 清泛网 - 专注C/C++及内核技术
...发配置为例，Qt是一个跨平台的C++应用程序框架，具有少编程、多创造、尽使用的特点，个人感觉功能比较强大，API使用比MFC简单，对Linux编程感兴趣的不妨试试（当然Linux下编程选择还是比较广泛的，OpenGL、wxWidgets、GTK等）。Qt4...
强烈推荐一款非常mini的代码高亮开源软件--prism - 开源 & Github - 清泛网...
...显示代码大多都采用了格式化高亮显示，有的甚至对不同编程语言的不同关键字作了高亮处理。
但是比如下面这种就有点让人哭笑不得了，复制代码竟然还附带了行号！！！
除此之外，有的复制的代码格式乱七八糟，空格...