Understanding the Usage of "const" in Return Types, Function Parameters, and After Member Functions
In the function declaration below:
const int* const Method3(const int* const&);
the keyword "const" appears multiple times, each indicating a different aspect of the function's behavior or the types involved. To comprehend its usage:
1. Return Type: const int*
2. Function Parameter: const int* const&
3. Member Function: const after the function name
Example:
Let's consider an example to illustrate:
<code class="cpp">class MyClass { public: const int* const Method3(const int* const& num) const { return # } };</code>
In this member function:
By using "const" in these ways, it reinforces the contract between the function and its users. It ensures that the returned value and parameters will remain unchanged, enhancing code safety and maintainability.
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