How do I call a function that requires a 'static lifetime with a variable created in main?

Question

I\'ve got a struct defined that has a function which defines a static lifetime:

impl MyStruct {
    pub fn doSomething(&\'static self) {
        // Some          


        

Answer 1

The naive way to do this is with a static variable, but it will require unsafe code if you need to actually set the value inside your main function:

static mut OBJ: MyStruct = MyStruct;

fn main() {
    unsafe {
        OBJ = MyStruct {};
        OBJ.doSomething();
    }
}

It's also unsafe to do pretty much anything with a mutable static thereafter.

The much better way to do it is to let a library (lazy_static) take care of the unsafe code.

#[macro_use]
extern crate lazy_static;

fn main() {
    lazy_static!{
        static ref OBJ: MyStruct = MyStruct {};
    }
    OBJ.doSomething();
}