Hello, I'm a junior dev moving from C to Rust. I'm currently trying to port a library from C to Rust and I'm struggling to reproduce a specific behavior.

In C, I had the following:

// my_lib.h
typedef struct {
    uint8_t i2c_address;
} my_struct_t;

uint8_t send_to_i2c(my_struct_t *s);

// my_lib/some_file.c
void some_func(my_struct_t *s) {
    send_to_i2c(s);
}

In this setup, the library user had to implement the send_to_i2c function. I can't figure out how to achieve this in Rust. How can my library know that this function exists in a safe way while leaving the implementation to the client? Are the Trait the solution?

Thanks for you time!
Ben

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