Ruby StringScanner scan_until用法及代碼示例

StringScanner＃scan_until()：scan_until()是StringScanner類方法，它掃描字符串直到匹配模式為止

用法：StringScanner.scan_until()

參數：StringScanner值

返回：直到並包括比賽結束的子字符串

示例1:

# Ruby code for StringScanner.scan_until() method 
  
# loading StringScanner 
require 'strscan'
  
# declaring StringScanner  
c = StringScanner.new("Mon Sep 12 2018 14:39") 
   
# scan_until() method 
c.scan_until(/\w+/) 
  
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"
  
# scan_until() method 
c.scan_until(/\s+/) 
  
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"

輸出：

String Scanner result of c.scan_until() form : 3

String Scanner result of c.scan_until() form : 4

示例2:

# Ruby code for StringScanner.scan_until() method 
  
# loading StringScanner 
require 'strscan'
  
# declaring StringScanner  
c = StringScanner.new("h ello geeks") 
   
# scan_until() method 
c.scan_until(/\w+/) 
  
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"
  
  
# scan_until() method 
c.scan_until(/\s+/) 
  
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"

輸出：

String Scanner result of c.scan_until() form : 1

String Scanner result of c.scan_until() form : 2

相關用法

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