const_cast operator

const_cast operator

Cast to modify qualifiers

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  postfix-expr  := const_cast <  type-id  > (  expression  ) 

The const_cast operator performs a type cast that can add or remove const and volatile qualifiers. No other modifications to the type are permitted.

If you cast away a const or volatile qualifier from an object, and then modify the object, the behavior is undefined.

Example

 template<typename T> T& unsafe(const T& x) {   return  const_cast  <T&>(x); } 

See Also

const , dynamic_cast , expression , reinterpret_cast , static_cast , type , volatile , Chapter 3