StringScanner#restsize():restsize()是StringScanner类方法,它返回字符串位置之后的字节大小。
用法:StringScanner.restsize()
参数:StringScanner值
返回:字符串位置后的字节大小。
示例1:
# Ruby code for StringScanner.restsize() method
# loading StringScanner
require 'strscan'
# declaring StringScanner
c = StringScanner.new("Mon Sep 12 2018 14:39")
# restsize() method
c.pos = 2
puts "String Scanner restsize form : #{c.restsize}\n\n"
# restsize() method
c.pos = 7
puts "String Scanner restsize form : #{c.restsize}\n\n"
输出:
String Scanner restsize form : 19 String Scanner restsize form : 14
示例2:
# Ruby code for StringScanner.restsize() method
# loading StringScanner
require 'strscan'
# declaring StringScanner
c = StringScanner.new("hellogeeks")
# restsize() method
c.pos = 2
puts "String Scanner restsize form : #{c.restsize}\n\n"
# restsize() method
c.pos = 7
puts "String Scanner restsize form : #{c.restsize}\n\n"
输出:
String Scanner restsize form : 8 String Scanner restsize form : 3
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