in the string. value - The value of captured group. val str = "1234a kotlin 5678 3 is 4" val newStr = str.replace(Regex("[0-9]+"),{ "abcd " }) 复制代码. 输出结果为： abcd abcd abcd abcd a kotlin abcd abcd abcd abcd abcd is abcd 复制代码. Parameters. Parameters. To do this, the WordScramble method creates an array that contains the characters in the match. Replaces the first occurrence of the given regular expression regex in this char sequence with specified replacement expression. We've used regular expression \\s that finds all white space characters (tabs, spaces, new line character, etc.) The regex object as the second parameter. range - The range of indices in the input string where group was captured. The basic String Replace method in Kotlin is String.replace(oldValue, newValue). RegexクラスのReplaceメソッドで、正規表現にマッチする部分を置換したり削除したりする方法を解説。また、高度な正規表現の使い方も取り上げる。
Kotlinで正規表現を操作するには、 Regex(pattern: String)クラスを使用し、その正規表現オブジェクトでfind(..)やreplace(..)ような関数を呼び出す必要があります。 input文字列にcまたはdが含まれている場合にtrueを返すRegexクラスを使用する方法の例： ... Kotlin Trademark is protected under the Kotlin Foundation. Represents the results from a single capturing group within a MatchResult of Regex. That regex will match every character of each line in our example and capture the parameter.
... Kotlin Trademark is protected under the Kotlin Foundation. ignoreCase is an optional argument, that could be sent as third argument to the replace() method. 正则表达式，又称规则表达式。下面这篇文章主要给大家介绍了关于Kotlin利用Regex构建正则表达式的相关资料，文中通过示例代码介绍的非常详细，对大家的工作具有一定的参考学习价值，需要的朋友们下面 … RegExクラス. We would then reference the parameter as the first capture: $1. How to find a string regex and split the string into two strings using Kotlin. The following example uses a regular expression to extract the individual words from a string, and then uses a MatchEvaluator delegate to call a method named WordScramble that scrambles the individual letters in the word. In the aboe program, we use String's replaceAll() method to remove and replace all whitespaces in the string sentence. Examples.
replacement - A replacement expression that can include substitutions. For example we will check if the string contains regex {0}, and when it finds assertion creates a new string. std::regex_replace() is used to replace all matches in a string, Syntax: regex_replace(subject, regex_object, replace_text) Parameters: It accepts three parameters which are described below: Subject string as the first parameter.