Ruby | StringScanner exist? function
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 ( "helloBeginner" ) # exist?() method puts "String Scanner exist? form : #{c.exist? /ge/}\n\n" |
Output :
String Scanner exist? form : 7
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