Ruby StringScanner scan_until用法及代码示例

StringScanner＃scan_until()：scan_until()是StringScanner类方法，它扫描字符串直到匹配模式为止

用法：StringScanner.scan_until()

参数：StringScanner值

返回：直到并包括比赛结束的子字符串

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"

输出：

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"

输出：

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

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

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注：本文由纯净天空筛选整理自mayank5326大神的英文原创作品 Ruby | StringScanner scan_until function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。