Do getters and setters impact performance in C++/D/Java?

Question

This is a rather old topic: Are setters and getters good or evil?

My question here is: do compilers in C++ / D / Java inline the getters and setter?

To which

Answer 1

In D, all methods of classes, but not structs, are virtual by default. You can make a method non-virtual by making either the method or the whole class final. Also, D has property syntax that allows you to make something a public field, and then change it to a getter/setter later without breaking source-level compatibility. Therefore, in D I would recommend just using public fields unless you have a good reason to do otherwise. If you want to use trivial getters/setters for some reason such as only having a getter and making the variable read-only from outside the class, make them final.

---

Edit: For example, the lines:

S s;
s.foo = s.bar + 1;

will work for both

struct S
{
     int foo;
     int bar;
}

and

struct S
{
     void foo(int) { ... }
     int bar() { ... return something; }
}