Null object: Difference between revisions
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=={{header|Chapel}}==
Class variables can be declared as nil if and only if they have nilable class type, declared with postfix ?, alongside memory management technique owned, borrowed, shared, or unmanaged. A nilable class type is default initialized to nil.
<syntaxhighlight lang="chapel">
class C { };
var c : owned C?; // is nil
writeln(if c == nil then "nil" else "something");
</syntaxhighlight>
=={{header|Clojure}}==
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