Apr 21, 2010 · How do I declare a constant in Python? In Java, we do: public static final String CONST_NAME = "Name";

This can be useful when overloading member functions based on const, for instance. It can also be used to add const to an object, such as to call a member function overload. const_cast also …

Here, both constexpr and const are required: constexpr always refers to the expression being declared (here NP), while const refers to int (it declares a pointer-to-const). Removing the …

void SetValue(const bool b) { my_val_ = b; } Does that const actually have any impact? Personally I opt to use it extensively, including parameters, but in this case I wonder if it makes any …

Dec 8, 2008 · Note that if the std::string is const, .data() will return const char * instead, like .c_str(). The pointer becomes invalid if the string is destroyed or reallocates memory. The …

A const is a compile-time constant whereas readonly allows a value to be calculated at run-time and set in the constructor or field initializer. So, a 'const' is always constant but 'readonly' is …

When you add the const keyword to a method the this pointer will essentially become a pointer to const object, and you cannot therefore change any member data. (Unless you use mutable, …

Jul 17, 2009 · I always mess up how to use const int *, const int * const, and int * const correctly. Is there a set of rules defining what you can and cannot do? I want to know all the do's and all …

Apr 7, 2021 · as const only affects the compiler, and there is an exception to its read-only effect (see the comments). But in general, that's still the major use difference between const and as …

Feb 13, 2018 · A const pointer to non-const char would be a char* const, and you can initialize a char* from that all day if you want. You can, if you really want, achieve this with …