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Scala String replaceFirst()用法及代碼示例


replaceFirst()方法與replaceAll相同,但此處僅替換指定子字符串的第一個外觀。

函數定義: String replaceFirst(String regex, String replacement)
返回類型: It returns the stated string after replacing the first appearance of stated regular expression with the string we provide.

範例1:


// Scala program of replaceFirst() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Applying replaceFirst method 
        val result = "csoNidhimsoSingh".replaceFirst(".so", "##") 
          
        // Displays output 
        println(result) 
      
    } 
} 
輸出:
##NidhimsoSingh

範例2:

// Scala program of replaceFirst() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Applying replaceFirst method 
        val result = "NidhimsoSinghcso".replaceFirst(".so", "*") 
          
        // Displays output 
        println(result) 
      
    } 
} 
輸出:
Nidhi*Singhcso

範例3:

// Scala program of replaceFirst() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Applying replaceFirst method 
        val result = "fsoNidhimsoSinghcso".replaceFirst(".so", "*") 
          
        // Displays output 
        println(result) 
      
    } 
} 
輸出:
*NidhimsoSinghcso


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注:本文由純淨天空篩選整理自nidhi1352singh大神的英文原創作品 Scala String replaceFirst() method with example。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。