Ruby | StringScanner rest_size function

StringScanner#rest_size() : rest_size() is a StringScanner class method which returns the size of the bytes after the string position.

Syntax: StringScanner.rest_size()

Parameter: StringScanner values

Return: the size of the bytes after the string position.

Example #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"

Output :

String Scanner rest_size form : 19

String Scanner rest_size form : 14

Example #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"

Output :

String Scanner rest_size form : 8

String Scanner rest_size form : 3