Ruby | StringScanner scan_until function
Last Updated :
12 Dec, 2019
StringScanner#scan_until() : scan_until() is a StringScanner class method which scans the string until the pattern is matched
Syntax: StringScanner.scan_until()
Parameter: StringScanner values
Return: the substring up to and including the end of the match
Example #1 :
require 'strscan'
c = StringScanner. new ( "Mon Sep 12 2018 14:39" )
c.scan_until(/\w+/)
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"
c.scan_until(/\s+/)
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"
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Output :
String Scanner result of c.scan_until() form : 3
String Scanner result of c.scan_until() form : 4
Example #2 :
require 'strscan'
c = StringScanner. new ( "h ello geeks" )
c.scan_until(/\w+/)
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"
c.scan_until(/\s+/)
puts "String Scanner result of c.scan_until() form : #{c.pos()}\n\n"
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Output :
String Scanner result of c.scan_until() form : 1
String Scanner result of c.scan_until() form : 2
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