npryce

In Kotlin String.toInt() and Char.toInt() do very different things.

>>> "9".toInt()
9
>>> '9'.toInt()
57
>>> 

npryce

fun TestContext<*>.withTestTiming() {
   var start: Long? = null
    
   before {
        start = System.currentTimeMillis()
   }

   after {
        start?.let {
            val timeTaken = System.currentTimeMillis() - it

npryce

class Fixture {
  val tempFile: File
}

fixture { testDescriptor ->
  Fixture(System.createTempFile(testDescriptor.fullName.joinToString("/"), ".json"))
}

test {
    doSomethingThatWritesTo(tempFile)

npryce

E.g. the stdlib defines the following function:

fun CharSequence?.isNullOrBlank(): Boolean

You can take a reference to this extension function like this:

val isNullOrBlankFn = CharSequence?::isNullOrBlank

npryce

package browser

import org.w3c.dom.events.Event
import org.w3c.dom.events.EventTarget

typealias EventHandler<E> = (E) -> Unit

external val speechSynthesis: SpeechSynthesis

external class SpeechSynthesis : EventTarget {

npryce

package browser

import org.w3c.dom.Element
import org.w3c.dom.events.UIEvent

typealias TouchId = Int

external interface Touch {
    val identifier: TouchId
    val target: Element

npryce

override fun close() = client?.disconnect()

Return type of 'close' is not a subtype of the return type of the overridden member 'public abstract fun close(): Unit defined in java.lang.AutoCloseable'

Unit? is a supertype of Unit, not a subtype.

npryce

Some libraries define optional interfaces that have to be discovered by dynamic type checking and can only used after casting to the optional interface type.

For example, a "ScriptEngine" provided by the Java scripting API only provides methods for evaluating scripts.

val js : ScriptEngine = ScriptEngineManager().getEngineByName("nashorn")
js.eval("print('hello, world');") 

But the "nashorn" script engine is specified to also implement the Invocable interface, that allows the host program to invoke functions defined by a script, and the Compilable interface, that allows the host program to compile a script and then execute the compiled form.

npryce

MARKDOWN_SRC:=$(shell find doc -name '*.md')
DIAGRAM_SRC:=$(shell find doc -name '*.plantuml')

MARKDOWN_FORMAT=markdown+fenced_code_blocks+fenced_code_attributes+grid_tables+footnotes

# Order is significant when multiple CSS files
CSS_SRC:=styles/style.css

SITE_HTML=$(MARKDOWN_SRC:doc/%.md=out/site/%.html) $(DIAGRAM_SRC:doc/%.plantuml=out/site/%.png)
SITE_CSS=$(CSS_SRC:styles/%=out/site/%)

npryce

val <T> T.` `: T get() = this
val <T> T.`  `: T get() = this
val <T> T.`   `: T get() = this
val <T> T.`    `: T get() = this
val <T> T.`     `: T get() = this
val <T> T.`      `: T get() = this
val <T> T.`       `: T get() = this
val <T> T.`        `: T get() = this
val <T> T.`         `: T get() = this
val <T> T.`          `: T get() = this