#![feature(const_vec_new)]
static mut vStrSlc: Vec<&str> = Vec::new();
static mut vI32: Vec<i32> = Vec::new();
trait Trait1 {
  fn f1(item: Self);
  fn f2()->Self;
}
impl Trait1 for &'static [&'static str] {
  fn f1(items: &'static [&'static str]) {
    for item in items {
      unsafe{vStrSlc.push(item);}
    }
  }
  fn f2()->&'static [&'static str]{
    let aLen = unsafe{vStrSlc.len()};
    static mut rslt:Vec<&str> = Vec::new();
    unsafe{
      rslt = vec![""; aLen];
      for i in 0..aLen {
        rslt[i] = vStrSlc.pop().unwrap();
      }
      rslt.as_slice()
    }
  }
}
impl Trait1 for &'static [i32] {
  fn f1(items: &'static [i32]) {
    for item in items {
      unsafe{vI32.push(*item);}
    }
  }
  fn f2()->&'static [i32]{
    let aLen = unsafe{vI32.len()};
    static mut rslt:Vec<i32> = Vec::new();
    unsafe{
      rslt = vec![0; aLen];
      for i in 0..aLen {
        rslt[i] = vI32.pop().unwrap();
      }
      rslt.as_slice()
    }
  }
}
fn main() {
  let arg:&'static [&'static str] = &["abc", "def", "ghi"];
  Trait1::f1(arg);
  println!("{:?}", <&'static [&'static str] as Trait1>::f2()); //["ghi", "def", "abc"]
  let arg:&'static [i32] = &[123, 456, 789];
  Trait1::f1(arg);
  println!("{:?}", <&'static [i32] as Trait1>::f2()); //[789, 456, 123]
}