): String? { return str?.replaceFirst(".$".toRegex(), "") } fun main() { val str = "User1" println(removeLastChar(str)) // User } 下载代码 这就是在 Kotlin 中从字符串末尾删除字符的全部内容。 评价这篇文章 平均评分 4.33/5。票数: 3 ...
1. Remove first three characters in string In this example, we will take a string instr1, and drop the first3characters of the stringstr1. Kotlin Program </> Copy fun main(args: Array<String>) { val str1 = "abcdefg" val n = 3 val result = str1.drop(n) println("Original String...
println(removeNonAlphaNumChars(s))// ABCD_1 } 下载代码 或者,我们可以使用 POSIX 字符类\p{Alnum}, 相当于[\p{Alpha}\p{Digit}], 并匹配任何字母数字字符[A-Za-z0-9]. 1 2 3 4 5 6 7 8 funremoveNonAlphaNumChars(s:String?):String?{ ...
packagecom.zetcodefunmain(args:Array<String>){valword ="influence"println(word)varword2 ="sunshine"println(word2) word2 ="rain"println(word2) } 有一个只读变量和一个可变变量。 valword ="influence" 使用val关键字,我们定义了一个只读变量。 其值以后无法在程序中更改。 数据类型为 String,这是从...
var name = "Igor" // Inferred type is String name = "Marcin" 请注意,Kotlin 不需要分号。你仍然可以使用它们,但它们是可选的。我们也不需要指定变量类型,因为它是从上下文中推断出来的。每当编译器可以从上下文中推断出类型时,我们就不必明确指定它。Kotlin 是一种强类型语言,因此每个变量都有适当的类型: ...
The elements of a string can be accessed with the indexing operator ([]). 代码语言:javascript 代码运行次数:0 运行 AI代码解释 var text:String = "Kotlin is awesome" // it prints K println(text[0]) You can escape some special characters using a backslash. The escape sequences supported ...
Kotlin – Remove First N Characters from String Kotlin – Remove Last N Characters from String Kotlin – Split String to Lines Kotlin – Substring Kotlin – Iterate over Each Character in String Kotlin File Operations If our application requires working with files which need operations like reading...
1.使用Normalizer对Unicode thext进行规范分解。1.删除非空格组合字符（\p{Mn}）。这是一个扩展函数，...
* To avoid ambiguous results when strings in [delimiters] have characters in common, this method proceeds from * the beginning to the end of this string, and matches at each position the first element in [delimiters] * that is equal to a delimiter in this instance at that position. ...
首先，我们有两个Java文件和与之绑定的xml文件。此处以HistoryActivity.java，activity_history.xml 和 ...