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Note that a key difference between the C/C++ derived keyword const and the C# keyword readonly is that const is evaluated at compile time, while readonly is evaluated at runtime, and thus can have an expression that is only calculated and fixed later (at runtime).
However, Java initially left open the possibility of implementing const, noticeable in that const is a reserved word, though it is not actually used as a keyword. Instead, Java has the object-oriented keyword final, which is used to qualify attributes (and thence also for local variables) as constant, but not to qualify types.
Even functions can be const in C++. The meaning here is that only a const function may be called for an object instantiated as const; a const function doesn't change any non-mutable data. C# has both a const and a readonly qualifier; its const is only for compile-time constants, while readonly can be used in constructors and other runtime ...
because the argument to f must be a variable integer, but i is a constant integer. This matching is a form of program correctness, and is known as const-correctness.This allows a form of programming by contract, where functions specify as part of their type signature whether they modify their arguments or not, and whether their return value is modifiable or not.
Const-ness is propagated as a means to enforce, at compile-time, correctness of the code with respect to mutability of objects (see const-correctness). final provides a version of const, [9] equivalent to type* const pointers for objects and const for primitive types. Immutability of object members achieved via read-only interfaces and object ...
Pep Guardiola has branded it a final, but not the sort to which he is accustomed.Not like in 2009 or 2011 or 2023, with the glory it brought. Or even 2021, when taking Manchester City to what was ...
Unlike C++'s const, Java's final, and C#'s readonly, ... The difference between const and immutable is what they apply to: const is a property of the variable: ...
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