Ruby StringScanner post_match函数

StringScanner#post_match() : post_match()是StringScanner类的一个方法，用于返回最后一次扫描的后匹配（正则表达式意义上）。

语法。StringScanner.post_match()

参数。StringScanner的值

返回：最后一次扫描的后匹配（正则表达式意义上的）。

例子 #1 :

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

输出:

String Scanner post_match form :  Sep 12 2018 14:39

String Scanner post_match form : Sep 12 2018 14:39

例子 #2 :

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

输出:

String Scanner post_match form :  ello geeks

String Scanner post_match form : ello geeks