Ruby StringScanner rest_size用法及代碼示例

StringScanner＃rest_size()：rest_size()是StringScanner類方法，它返回字符串位置之後的字節大小。

用法：StringScanner.rest_size()

參數：StringScanner值

返回：字符串位置後的字節大小。

示例1:

# Ruby code for StringScanner.rest_size() method 
  
# loading StringScanner 
require 'strscan'
  
# declaring StringScanner  
c = StringScanner.new("Mon Sep 12 2018 14:39") 
  
# rest_size() method 
c.pos = 2
puts "String Scanner rest_size form : #{c.rest_size}\n\n"
  
# rest_size() method 
c.pos = 7
puts "String Scanner rest_size form : #{c.rest_size}\n\n"

輸出：

String Scanner rest_size form : 19

String Scanner rest_size form : 14

示例2:

# Ruby code for StringScanner.rest_size() method 
  
# loading StringScanner 
require 'strscan'
  
# declaring StringScanner  
c = StringScanner.new("hellogeeks") 
  
# rest_size() method 
c.pos = 2
puts "String Scanner rest_size form : #{c.rest_size}\n\n"
  
# rest_size() method 
c.pos = 7
puts "String Scanner rest_size form : #{c.rest_size}\n\n"

輸出：

String Scanner rest_size form : 8

String Scanner rest_size form : 3

相關用法

注：本文由純淨天空篩選整理自mayank5326大神的英文原創作品 Ruby | StringScanner rest_size function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。