unscan()
Instance Public methods
Set the scan pointer to the previous position. Only one previous position is remembered, and it changes with each scanning operation.
1 2 3 4 5 6 | s = StringScanner.new('test string')s.scan(/\w+/) # => "test"s.unscans.scan(/../) # => "te"s.scan(/\d/) # => nils.unscan # ScanError: unscan failed: previous match record not exist |
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