modernize-use-default-member-init

This check converts a default constructor's member initializers into the new default member initializers in C++11. Other member initializers that match the default member initializer are removed. This can reduce repeated code or allow use of '= default'.

struct A {
  A() : i(5), j(10.0) {}
  A(int i) : i(i), j(10.0) {}
  int i;
  double j;
};

// becomes

struct A {
  A() {}
  A(int i) : i(i) {}
  int i{5};
  double j{10.0};
};

Options

struct A {
  A() {}
  A(int i) : i(i) {}
  int i = 5;
  double j = 10.0;
};