Enforced immutability: Difference between revisions
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It is possible to remove the <tt>const</tt> qualifier of the type a pointer points to through a cast, but doing so will result in undefined behavior.
=={{header|C sharp|C#}}==
Fields can be made read-only (a runtime constant) with the '''readonly''' keyword.
<lang csharp>readonly DateTime now = DateTime.Now;</lang>
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constant str = "immutable string"</lang>
=={{header|F Sharp|F#}}==
As a functional language, everything in F# is immutable by default. Interestingly, <code>const</code> is a reserved word but is non-functional.
<lang fsharp>let hello = "Hello!"</lang>
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