Comparing Strings ThecompareTo(string)function compares two strings and returns 0 if both are equal: Example vartxt1="Hello World" vartxt2="Hello World"println(txt1.compareTo(txt2))// Outputs 0 (they are equal) Try it Yourself » ...
It is a very useful feature to save time, especially when compared to Java, that does not offer a way to automatically create properties or compare objects. There are only a few requirements to use a data class: the primary constructor must have at least one parameter all primary constructor...
println("Strings are not equal") } } In the example, we compare two strings. if (s1 == s2) { The==operator compares structural equality, that is, the content of the two strings. val res = s1.compareTo(s2, true) ThecompareTomethod compares two strings lexicographically, optionally igno...
让我们举一个例子来比较 Kotlin 中的两个字符串。有两种比较字符串的方法,使用equals()方法或使用compareTo()方法。 /** * created by Chaitanya for Beginnersbook.com */packagebeginnersbookfunmain(args :Array<String>){varstr1 ="BeginnersBook"varstr2 ="beginnersbook"/** * true if equals, otherwise f...
However, most of the time, we need to check if two objects have equivalent values. So, let’s dive in to investigate different ways of structural equality in Kotlin. 2. Equality Using the == Operator == and its opposite != are used to compare two objects. If we compare two strings ...
val byLastName = compareBy(UserKT::lastName) val byFirstNameThenLastName = byFirstName.then(byLastName).thenBy(UserKT::age) val byFirstNameThenLastName1 = compareBy(UserKT::age).then(nullsLast(naturalOrder())) val strings = arrayListOf("one", "two", "three", "four", "five") ...
使用kotlinc编译器,我们可以编译源代码。 $ ls com/zetcode/ HelloKt.class 编译器在com/zetcode子文件夹中创建HelloKt.class。 $ kotlin com.zetcode.HelloKt Hello, World! 我们使用kotlin工具运行该程序。 打包Kotlin 程序 接下来,我们将展示如何将 Kotlin 程序打包到 Java JAR 文件中。
Kotlin also has acompareTomethod which we can use to compare the order of the two strings. Similarly, as theequalsmethod, thecompareTomethod also comes with an optionalignoreCaseargument: assertTrue { first.compareTo(second) ==0} assertTrue { first.compareTo(firstCapitalized) ==32} assertTrue...
Kotlin 是静态类型语言并支持类型推导,允许维护正确性与性能的同时保持源代码的简洁。 Kotlin支持面向对象和函数式两种编程风格,通过头等函数使更高级别的的抽象成为可能,通过支持不可变值简化了测试和多线程开发。 在服务端应用程序中它可以工作得很好,全面支持所有现存的 Java 框架,为常见的任务提供新工具,如生成 HTM...
max(strings, { a, b -> a.length < b.length }) 1. 函数max是一个高阶函数,它接受一个函数作为第二个参数。 其第二个参数是一个表达式,它本身是一个函数,如下: AI检测代码解析 fun compare(a: String, b: String): Boolean = a.length < b.length ...