Nil: Difference between revisions
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*[http://www.lua.org/pil/2.1.html Nil in Programming in Lua] | *[http://www.lua.org/pil/2.1.html Nil in Programming in Lua] | ||
[[Category:Scripting Concepts]] | [[Category:Scripting Concepts]] | ||
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Latest revision as of 16:45, 17 April 2021
Nil is a type with a single value, nil, whose main property is to be different from any other value. A global variable has a nil value by default, before a first assignment, and you can assign nil to a global variable to delete it. Lua uses nil as a kind of non-value, to represent the absence of a useful value.