# Extra Clang Tools 4 documentation

## clang-tidy - modernize-avoid-bind

# modernize-avoid-bind

The check finds uses of `std::bind` and replaces simple uses with lambdas. Lambdas will use value-capture where required.

Right now it only handles free functions, not member functions.

Given:

    int add(int x, int y) { return x + y; }

Then:

    void f() {
      int x = 2;
      auto clj = std::bind(add, x, _1);
    }

is replaced by:

    void f() {
      int x = 2;
      auto clj = [=](auto && arg1) { return add(x, arg1); };
    }

`std::bind` can be hard to read and can result in larger object files and binaries due to type information that will not be produced by equivalent lambdas.