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What is a lambda (function)?
... return x + y
end
end
add5 = adder(5)
add5(1) == 6 -- true
Kotlin
val pred = { x: Int -> x % 2 == 0 }
val result = pred(4) // true
Ruby
Ruby is slightly different in that you cannot call a lambda using the exact same syntax as calling a function, but it still has lambdas.
def...
Android How to adjust layout in Full Screen Mode when softkeyboard is visible
...4 with screen sizes ranging from tiny to big.
The code has been ported to Kotlin, but porting my changes back to Java is simple. Let me know if you need help:
class AndroidBug5497Workaround constructor(activity: Activity) {
private val contentContainer = activity.findViewById(android.R.id.cont...
多媒体组件 · App Inventor 2 中文网
...系统中选择一个文件。
还可以通过调用其 打开 方法以编程方式打开选择器。
使用文件选择器组件需要 Android 4.4 或更高版本、iOS 11 或更高版本。要求AI伴侣v2.68及以上。
属性
操作
设置 文件选择器 所需的操作。有如下选...
Gradle to execute Java class (without modifying build.gradle)
...alue also works for the application plugin. I am using it with the Gradle Kotlin DSL: plugins { application }; application { mainClassName = if (project.hasProperty("mainClass")) project.properties.get("mainClass").toString() else "Foo" }
– pvillela
...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...
另外，又有两个BSTR的包容类_bstr_t和CComBSTR，它们是为了编程者使用BSTR更加方便，因为在他们的构造函数中都调用了SysAllocString，析构函数调用了SysFreeString，然而使用这两个类时仍然需要特别注意，否则也会导致不可预知的错...
Scala vs. Groovy vs. Clojure [closed]
...
And given that James Strachan is working actively on the Kotlin language, Scala apparently isn't impressive enough for him.
– bdkosher
May 24 '13 at 14:50
6
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What is the difference between statically typed and dynamically typed languages?
...type system to deduce the type of a variable (e.g.: OCaml, Haskell, Scala, Kotlin)
The main advantage here is that all kinds of checking can be done by the compiler, and therefore a lot of trivial bugs are caught at a very early stage.
Examples: C, C++, Java, Rust, Go, Scala
Dynamically typed lan...
How to get an enum which is created in attrs.xml in code
...
Let me add a solution written in kotlin. Add inline extension function:
inline fun <reified T : Enum<T>> TypedArray.getEnum(index: Int, default: T) =
getInt(index, -1).let { if (it >= 0) enumValues<T>()[it] else default
}
Now get...
Google Maps V3 - How to calculate the zoom level for a given bounds
...
Here a Kotlin version of the function:
fun getBoundsZoomLevel(bounds: LatLngBounds, mapDim: Size): Double {
val WORLD_DIM = Size(256, 256)
val ZOOM_MAX = 21.toDouble();
fun latRad(lat: Double): Double {
...
Refreshing OAuth token using Retrofit without modifying all calls
...correct way for handle refresh_token.
Here is my implement (I have using Kotlin, Dagger, RX but you may use this idea for implement to your case)
TokenAuthenticator
class TokenAuthenticator @Inject constructor(private val noneAuthAPI: PotoNoneAuthApi, private val accessTokenWrapper: AccessTokenWr...