c++ const member function mutable
[C] Mutable member functions? Discussion in C started by Thomas Matthews, Jan 11, 2004.However, the tables store method is not constant, which is bringing up compiler warnings (something like a const method is using a non-constant function). Member Functions Types - Member functions are part of C classes.Member functions represent behavior of a class. All member functions can be divided into the following categories I am studying C and I read that: If a data member is declared mutable, then it is legal to assign a value to this data member from a const member function. But the following code compiled without any error or warning by gcc. | Recommendc - Mutable variable changed by a non-const member function. o assign a value to this data member from a const member function. But the following code compiled without any error or warning by gcc. mutable: allows body to modify the parameters captured by copy, and to call their non- const member functions.The value returned by this conversion function is a pointer to a function with C language linkage that, when invoked, has the same effect as invoking the closure objects function Ive been trying to modify a data-member in const member function on a const object but Ive been unsuccesful. Ive been reading a book and found a code example on the net (http://cplus.about.com/library/glossef- mutable.htm) on this When lambda expressions are used as the kernel parameter, a const kernel function is a lambda that does not have the keyword mutable. Like any const C member function, a const kernel function cannot modify member variables (captured variables, in the case of lambdas) or call When const qualifies a member functions, the qualification refers to the implicit this argument. In other words, that function will not be allowed to alter the state of the object it is invoked on (the object pointed to by the implicit this pointer) with the exception of mutable objects, but thats another story. C Question. const member function mutable. As i am given to understand, the const specifier at the end of a member function means that the classs members cannot be modified, within that function, unless they are declared as mutable. I understand that a member function can be declared as const meaning it doesnt alter the member variables), but can it be declared as mutable?[Note: crossposted to news:alt.comp.lang.learn.
c-c since it may be of interest to newbies.] conceptually const: a const member function can change the bits in an object as long as this is undetectable by a client. supported by C standards committee by introduction of mutable keyword. Visual C :: Const Char Returned By Various FunctionsC :: When To Declare A Member Function As (const)C :: Initializing Const Char Member Variable In Constructor? A tutorial lesson on the use of the keywords const and mutable in the C programming language.