clone_dyn 0.62.0

Derive to clone dyn structures.
Documentation 
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#[ allow( unused_imports ) ]
use super :: *;

//

#[ the_module ::clone_dyn ]
trait Trait1< T1:  ::core ::fmt ::Debug, T2 >
where
  T2:  ::core ::fmt ::Debug,
  Self:  ::core ::fmt ::Debug,
{
  fn dbg( &self ) -> String 
  {
  format!("{self:?}")
 }
}

//

// xxx: review
// #[ derive( Debug, Clone ) ]
// struct Struct1< T1, T2 >
// where
//   T1:  ::core ::fmt ::Debug,
//   T2:  ::core ::fmt ::Debug,
// {
//   a: T1,
//   b: T2,
// }
//
// impl Trait1< i32, char > for Struct1< i32, char >
// {
//   fn dbg( &self ) -> String
//   {
//     format!( "{self:?}( {:?} {:?} )", self.a, self.b )
// }
// }

//

impl Trait1< i32, char > for i32 
{
  fn dbg( &self ) -> String 
  {
  format!("{self:?}")
 }
}

impl Trait1< i32, char > for i64 
{
  fn dbg( &self ) -> String 
  {
  format!("{self:?}")
 }
}

impl Trait1< i32, char > for String 
{
  fn dbg( &self ) -> String 
  {
  format!("{self:?}")
 }
}

impl< T > Trait1< i32, char > for &[ T]
where
  T: the_module ::CloneDyn,
  Self:  ::core ::fmt ::Debug,
{
  fn dbg( &self ) -> String 
  {
  format!("{self:?}")
 }
}

impl Trait1< i32, char > for &str 
{
  fn dbg( &self ) -> String 
  {
  format!("{self:?}")
 }
}

#[ test ]
fn basic() 
{
  //

  let e_i32: Box< dyn Trait1<i32, char >> = Box ::new(13);
  let e_i64: Box< dyn Trait1<i32, char >> = Box ::new(14);
  let e_string: Box< dyn Trait1<i32, char >> = Box ::new("abc".to_string());
  let e_str_slice: Box< dyn Trait1<i32, char >> = Box ::new("abcd");
  let e_slice: Box< dyn Trait1<i32, char >> = Box ::new(&[ 1i32, 2i32] as &[ i32]);

  //

  let vec: Vec< Box<dyn Trait1<i32, char >>> = vec![
  e_i32.clone(),
  e_i64.clone(),
  e_string.clone(),
  e_str_slice.clone(),
  e_slice.clone(),
 ];
  let vec = vec.iter().map(|e| e.dbg()).collect :: < Vec<_ >>();
  let vec2 = vec![
  "13".to_string(),
  "14".to_string(),
  "\"abc\"".to_string(),
  "\"abcd\"".to_string(),
  "[1, 2]".to_string(),
 ];
  assert_eq!(vec, vec2);

  //

  let vec: Vec< Box<dyn Trait1<i32, char >>> = vec![
  e_i32.clone(),
  e_i64.clone(),
  e_string.clone(),
  e_str_slice.clone(),
  e_slice.clone(),
 ];
  let vec2 = the_module ::clone(&vec);
  let vec = vec.iter().map(|e| e.dbg()).collect :: < Vec<_ >>();
  let vec2 = vec2.iter().map(|e| e.dbg()).collect :: < Vec<_ >>();
  assert_eq!(vec, vec2);

  //

  let vec: Vec< Box<dyn Trait1<i32, char >>> = vec![
  e_i32.clone(),
  e_i64.clone(),
  e_string.clone(),
  e_str_slice.clone(),
  e_slice.clone(),
 ];
  let vec2 = vec.clone();
  let vec = vec.iter().map(|e| e.dbg()).collect :: < Vec<_ >>();
  let vec2 = vec2.iter().map(|e| e.dbg()).collect :: < Vec<_ >>();
  assert_eq!(vec, vec2);

  //
}