Create a vector with macro iterator syntax - rust

Question

How can I create a new vector with the iterator Rust macro syntax?
I am trying this:
unsafe {
MUT_STATIC_VAR = vec![
#(#my_outher_vector_data)*,
];
}
Full explanation: I am trying to reasign data that I write in one mut static var of type: Vec when the macro it's spanded at compile time. When I try to retrieve the data at runtime, the global it's empty, so I am rewiring the data that I want in main().
Recap. I am just want to assign the content of one vector to another, but neither array or Vec<T> implements ToTokens.
Compiler error:
`main` function not found in crate `my_crate`
Thanks

Answer 1

To initialize the content, Iterators are able to use macro #(#...)*, syntax.
let other_as_iter = my_outher_vector_data.iter();
quote {
unsafe {
MUT_STATIC_VAR = vec![
#(#other_as_iter)*,
];
}
}

Answer 2

I think lazy_static should do the job:
#[macro_use]
extern crate lazy_static;
use std::sync::Mutex;
lazy_static! {
static ref MUT_STATIC_VAR: Mutex<Vec<String>> = Mutex::new(vec![]);
}
fn other_vec(v: Vec<String>) {
let mut r = MUT_STATIC_VAR.lock().unwrap();
r.extend_from_slice(v.as_slice());
}
fn main() {
other_vec(vec!["dog".to_string(), "cat".to_string(), "mouse".to_string()]);
}
…or draining the other vec after initializing MUT_STATIC_VAR:
fn other_vec(v: &mut Vec<String>) {
let mut r = MUT_STATIC_VAR.lock().unwrap();
r.extend_from_slice(v.drain(..).as_slice());
}
fn main() {
other_vec(&mut vec!["dog".to_string(), "cat".to_string(), "mouse".to_string()]);
}
…or my_other_vector_data wrapped in other_vec! macro:
Playground
macro_rules! other_vec {
() => {
vec!["dog", "cat", "mouse"] // my_other_vector_data here
};
}