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Applied suggestion in PR #343.

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hsutter 2015-12-29 10:46:58 -08:00
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@ -10271,15 +10271,25 @@ Immutable objects are easier to reason about, so make object non-`const` only wh
##### Reason
???
A member function should be marked `const` unless it changes the object's observable state.
##### Example
???
##### Example; bad
class Point {
int x, y;
public:
int getx() { return x; } // BAD, should be const as it doesn't modify the object's state
// ...
};
void f(const Point& pt) {
int x = pt.getx(); // ERROR, doesn't compile because getx was not marked const
}
##### Enforcement
???
* Flag a member function that is not marked `const`, but that could be `const` because its definition does not modify any member variable.
### <a name="Rconst-ref"></a> Con.3: By default, pass pointers and references to `const`s