Empty string: Difference between revisions

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""###>all illegal telephone call recording laws a to z access removed <""
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""###>all illegal telephone call recording laws a to z access removed <""
{{hatnote|The term {{green|{{big|&nbsp;""&nbsp;}}}} redirects here. For the printed character, see [[Quotation mark]].}}
{{Short description|Unique string of length zero}}
{{Refimprove|date=November 2009}}
In [[formal language theory]], the '''empty string''', or '''empty word''', is the unique [[String (computer science)|string]] of length zero.
 
=={{anchor|nullable symbol}}Formal theory==