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Ruby StringScanner pointer=函数

StringScanner#pointer=() : pointer=()是StringScanner类的一个方法，用于设置扫描指针的字节位置。

语法。StringScanner.pointer=()

参数。StringScanner的值

返回：设置扫描指针的字节指针位置。

例子 #1 :

# Ruby code for StringScanner.pointer=() method
  
# loading StringScanner
require 'strscan'
  
# declaring StringScanner 
c = StringScanner.new("Mon Sep 12 2018 14:39")
  
# pointer=() method
c.pointer = 2
  
puts "#{c.rest}\n\n"
  
# pointer=() method
c.pointer = 20
  
puts "#{c.rest}\n\n"

输出:

n Sep 12 2018 14:39

9

例子 #2 :

# Ruby code for StringScanner.pointer=() method
  
# loading StringScanner
require 'strscan'
  
# declaring StringScanner 
c = StringScanner.new("hellogeeks")
  
# pointer=() method
c.pointer = 2
  
puts "#{c.rest}\n\n"
  
# pointer=() method
c.pointer = 7
  
puts "#{c.rest}\n\n"