Enforced immutability: Difference between revisions
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m (→{{header|Phix}}: added one-off type checks, syntax colouring, marked p2js compatible) |
Thundergnat (talk | contribs) m (Regularize header markup to recommended on category page) |
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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. |
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. |
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=={{header|C sharp}}== |
=={{header|C sharp|C#}}== |
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Fields can be made read-only (a runtime constant) with the '''readonly''' keyword. |
Fields can be made read-only (a runtime constant) with the '''readonly''' keyword. |
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<lang csharp>readonly DateTime now = DateTime.Now;</lang> |
<lang csharp>readonly DateTime now = DateTime.Now;</lang> |
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constant str = "immutable string"</lang> |
constant str = "immutable string"</lang> |
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=={{header|F#}}== |
=={{header|F Sharp|F#}}== |
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As a functional language, everything in F# is immutable by default. Interestingly, <code>const</code> is a reserved word but is non-functional. |
As a functional language, everything in F# is immutable by default. Interestingly, <code>const</code> is a reserved word but is non-functional. |
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<lang fsharp>let hello = "Hello!"</lang> |
<lang fsharp>let hello = "Hello!"</lang> |
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