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In Javascript, we have: return age null ? -1 : age In kotlin, we can do the same thing with a better / simpler syntax: val safeAge: Int get() = age ?: 阅读全文
posted @ 2020-10-28 20:37
Zhentiw
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For data class, you can get 'copy' method, and also destructing: data class Customer (val name: String, val address: String, var age: Int) { // if we 阅读全文
posted @ 2020-10-27 17:04
Zhentiw
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// Shorter version class AnotherAlternativeCustomer (val name: String,var age: Int, val address: String = "") { var approvered: Boolean = false set(va 阅读全文
posted @ 2020-10-27 16:49
Zhentiw
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package com.rsk class Customer (val name: String, val address: String, var age: Int) { // if we don't want to pass in the address constructor(name: St 阅读全文
posted @ 2020-10-27 16:42
Zhentiw
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In this lesson, we use CSS transforms to create configurable 3D cuboids. Using CSS transforms in combination with scoped CSS variables, we are able to 阅读全文
posted @ 2020-10-26 21:37
Zhentiw
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In this lesson, we explore how you can use CSS variables almost like Boolean values in combination with calc(). By setting a variable to 1 or 0 and th 阅读全文
posted @ 2020-10-26 21:29
Zhentiw
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val randomNumber = Random().nextInt(3) if (randomNumber is BigDecimal) { result = result.add(BigDecimal(36)) } If you use type check, then 'result' is 阅读全文
posted @ 2020-10-26 18:36
Zhentiw
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Let's see following code: println(colors.reduce { acc, curr -> "$acc, $curr" }) // red, blue, green, black val myMap = mapOf(1 to "one", 2 to "two", 3 阅读全文
posted @ 2020-10-26 16:22
Zhentiw
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In kotlin, "fold" is same in Javascript's reduce. "fold" has initial value "reduce" in kotlin, you don't give initial value val colors = listOf("red", 阅读全文
posted @ 2020-10-26 16:14
Zhentiw
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import { curry, compose, toUpper, pipe } from 'ramda'; // #region listeners const _log = (value) => console.log(value); // #endregion // #region broad 阅读全文
posted @ 2020-10-25 22:11
Zhentiw
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