Rustやってみる

extern crate minigrep;

fn main() {
    let test1 = String::from("hello");
    println!("[new] test1 <= {:p} << \"{}\"", test1.as_ptr(), test1);
    println!("test1     | {:p} \"{}\"", test1.as_ptr(), test1);
    let mut test2 = String::from("world");
    println!("[new] test2 <= {:p} << \"{}\"", test2.as_ptr(), test2);
    println!("test2     | {:p} \"{}\"", test2.as_ptr(), test2);
    println!("[ムーブ] test2_back <= test2({:?})", test2.as_ptr());
    let test2_back = test2; // ムーブ
    println!("test2_back| {:p} \"{}\"", test2_back.as_ptr(), test2_back);
    println!("[ムーブ] test2 <= test1({:?})", test1.as_ptr());
    test2 = test1; // ムーブ
    println!("test2     | {:p} \"{}\"", test2.as_ptr(), test2);
    test2.push_str(" world");
    println!("test2 = test2 + \" world\"");
    println!("test2     | {:p} \"{}\"", test2.as_ptr(), test2);
    let test3 = &mut test2; // 借用
    println!("[借用] test3 <- test2");
    println!("test3     | {:p} \"{}\"", test3.as_ptr(), test3);
    let test4 = &test3; // 借用
    println!("[借用] test4 <- test3");
    println!("test4     | {:p} \"{}\"", test4.as_ptr(), test4);
    println!("test3     | {:p} \"{}\"", test3.as_ptr(), test3);
    test3.push_str("!!!!");
    println!("test3 = test3 + \"!!!!\"");
    // println!("test4     | {:p} \"{}\"", test4.as_ptr(), test4);
    println!("test3     | {:p} \"{}\"", test3.as_ptr(), test3);
    println!("test2     | {:p} \"{}\"", test2.as_ptr(), test2);
    test2 = String::from("The World");
    println!("[new] test2 <= {:p} << \"{}\"", test2.as_ptr(), test2);

    // println!("test1     | {:p} \"{}\"", test1.as_ptr(), test1);
    println!("test2     | {:p} \"{}\"", test2.as_ptr(), test2);
    println!("test2_back| {:p} \"{}\"", test2_back.as_ptr(), test2_back);
}

[new] test1 <= 0x55b4b9748ad0 << "hello"
test1     | 0x55b4b9748ad0 "hello"
[new] test2 <= 0x55b4b9748af0 << "world"
test2     | 0x55b4b9748af0 "world"
[ムーブ] test2_back <= test2(0x55b4b9748af0)
test2_back| 0x55b4b9748af0 "world"
[ムーブ] test2 <= test1(0x55b4b9748ad0)
test2     | 0x55b4b9748ad0 "hello"
test2 = test2 + " world"
test2     | 0x55b4b9748ad0 "hello world"
[借用] test3 <- test2
test3     | 0x55b4b9748ad0 "hello world"
[借用] test4 <- test3
test4     | 0x55b4b9748ad0 "hello world"
test3     | 0x55b4b9748ad0 "hello world"
test3 = test3 + "!!!!"
test3     | 0x55b4b9748ad0 "hello world!!!!"
test2     | 0x55b4b9748ad0 "hello world!!!!"
[new] test2 <= 0x55b4b9748b10 << "The World"
test2     | 0x55b4b9748b10 "The World"
test2_back| 0x55b4b9748af0 "world"

pub fn test_sub_function() {
  println!("test");
  test_sub_sub::test_sub_sub_sub::test_function();
}


pub mod test_sub_sub {
  pub mod test_sub_sub_sub {
    pub fn test_function() {
      println!("test");
      super::super::test_sub_function();
    }
  }
  pub fn test_function() {
    test_sub_sub_sub::test_function();
    super::test_sub_function();
    super::test_sub2::sub2_function();
  }
}

mod test_sub2 {
  pub fn sub2_function() {
    println!("sub2 fn!!");
  }
}

crate::module1::function1(); // 絶対パス
self::module2::function2(); // 相対パス

use crate::module1;