Ruby StringScanner scan用法及代码示例

StringScanner＃scan()：scan()是StringScanner类方法，尝试与当前位置的图案匹配。

用法：StringScanner.scan()

参数：StringScanner值

返回：匹配的字符串，否则返回false

示例1:

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

输出：

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

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

示例2:

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

输出：

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

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

相关用法

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 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。