Ruby | StringScanner eos? function

Ruby | StringScanner exist? function

Last Updated : 30 Sep, 2021

StringScanner#exist?() : exist?() is a StringScanner class method which returns the value of pointer if the pattern exists.

Syntax: StringScanner.exist?()
Parameter: StringScanner values
Return: the value of pointer - if the pattern exists otherwise return nil.

Example #1 :

Ruby

# Ruby code for StringIO.exist?() method

# loading StringIO
require 'strscan'

# declaring StringIO 
c = StringScanner.new("Fri Dec 12 2018 14:39")

# exist?() method
puts "String Scanner exist? form : #{c.exist? /2018/}\n\n"

Output :

String Scanner exist? form : 15

Example #2 :

Ruby

# Ruby code for StringIO.exist?() method

# loading StringIO
require 'strscan'

# declaring StringIO 
c = StringScanner.new("hellogeeks")

# exist?() method
puts "String Scanner exist? form : #{c.exist? /ge/}\n\n"

Output :

String Scanner exist? form : 7

Ruby | StringScanner eos? function

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