tuples

Provides many useful tools related to tuples

• AsRef
• AsMut
• AsOption
• AsResult
• AsDeref
• AsDerefMut
• Transpose Option
• Transpose Result
• Cloned
• Copied
• Flatten
• Combin
• Split
• Mapping
• Iter
• IntoIter
• FromIter
• Collect
• Meta Trait
• Shorthand Macro

Examples

• map

  let a = (1, 2, 3);
  let b = a.map(|v| v * 3);
  assert_eq!(b, (3, 6, 9));
  

• mapN

  let a = (1, 2, 3, 4, 5);
  let b = a.map3(|v| v * 5);
  assert_eq!(b, (1, 2, 3, 20, 5));
  

• map_all

  let a = (1, 2, 3);
  let b = a.map_all(|v| v * 10, |v| v * 100, |v| v * 1000);
  assert_eq!(b, (10, 200, 3000));
  

• as_ref

  let t = (5, 6, 7);
  let (a, b, c) = t.as_ref();
  assert_eq!(*a, 5);
  assert_eq!(*b, 6);
  assert_eq!(*c, 7);
  

• cloned

  let a = (&1, &2, &3);
  let b = a.cloned();
  assert_eq!(b, (1, 2, 3))
  

• flatten

  let a = ((1, 2, 3), (4, 5, 6), (7, 8, 9));
  let b = a.flatten();
  assert_eq!(b, (1, 2, 3, 4, 5, 6, 7, 8, 9));
  

• meta

  let a = (1, 2, 3, 4, 5);
  assert_eq!(a.arity(), 5);
  
  let b = ();
  assert_eq!(b.arity(), 0);
  

• iter

  let a = (1, 2, 3)
      .into_iter()
      .map(|v| v * 3)
      .collect_tuple::<tuple![3;]>();
  let b: (i32, i32, i32) = (3, 6, 9);
  assert_eq!(a, b);
  

  let a = (1, 2, 3)
      .into_iter()
      .map(|v| v * 3)
      .try_collect_tuple::<tuple![3;]>();
  let b: Option<(i32, i32, i32)> = Some((3, 6, 9));
  assert_eq!(a, b);
  

  let a = (1, 2, 3)
      .into_iter()
      .map(|v| v * 3)
      .collect_tuple_try::<tuple![3;]>();
  let b: (Option<i32>, Option<i32>, Option<i32>) = (Some(3), Some(6), Some(9));
  assert_eq!(a, b);
  

• transpose

  let a = Some((1, 2, 3)).transpose();
  assert_eq!(a, (Some(1), Some(2), Some(3)));
  
  let b = (Some(1), Some(2), Some(3)).transpose();
  assert_eq!(b, Some((1, 2, 3)));
  

  let a: (Result<u8, ()>, Result<u8, ()>, Result<u8, ()>) = (Ok(1), Ok(2), Ok(3));
  let b: Result<(u8, u8, u8), ()> = a.transpose();
  assert_eq!(b, Ok((1, 2, 3)));
  

  let a: (Result<u8, i16>, Result<u8, i32>, Result<u8, i64>) = (Ok(1), Err(-1), Ok(3));
  let b: Result<(u8, u8, u8), i64> = a.transpose();
  assert_eq!(b, Err(-1));
  

  let a: (Result<u8, i16>, Result<u8, i32>, Result<u8, i64>) = (Ok(1), Err(-1), Ok(3));
  let b = a.transpose1::<i64>();
  assert_eq!(b, Err(-1));
  

• combin

  let a = (1, 2).push_right(3);
  assert_eq!(a, (1, 2, 3));
  
  let b = (2, 1).push_left(3);
  assert_eq!(b, (3, 2, 1));
  
  let c = (1, 2, 3).concat((4, 5, 6));
  assert_eq!(c, (1, 2, 3, 4, 5, 6))
  

• split
  • split_parts

    let t = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
    
    let a = t.split_2_parts();
    assert_eq!(a, ((0, 1, 2, 3, 4), (5, 6, 7, 8, 9)));
    
    let b = t.split_3_parts();
    assert_eq!(b, ((0, 1, 2, 3), (4, 5, 6), (7, 8, 9)));
    
    let c = t.split_4_parts();
    assert_eq!(c, ((0, 1, 2), (3, 4, 5), (6, 7), (8, 9)));
    
    let d = t.split_5_parts();
    assert_eq!(d, ((0, 1), (2, 3), (4, 5), (6, 7), (8, 9)));
    

  • split_at

    let t = (1, 2, 3, 4, 5, 6);
    
    let a = t.split_at_1();
    assert_eq!(a, (1, (2, 3, 4, 5, 6)));
    
    let b = t.split_at_3();
    assert_eq!(b, ((1, 2, 3), (4, 5, 6)));
    
    let c = t.split_at_5();
    assert_eq!(c, ((1, 2, 3, 4, 5), 6));
    

  • split_by

    let t = (1, 2, 3, 4, 5, 6);
    let t2 = (1, 2, 3, 4, 5);
    
    let a = t.split_by_2();
    assert_eq!(a, ((1, 2), (3, 4), (5, 6)));
    
    let b = t2.split_by_2();
    assert_eq!(b, ((1, 2), (3, 4), 5));
    
    let c = t.split_by_3();
    assert_eq!(c, ((1, 2, 3), (4, 5, 6)));
    
    let d = t2.split_by_3();
    assert_eq!(d, ((1, 2, 3), (4, 5)));
    
    let e = t.split_by_6();
    assert_eq!(e, ((1, 2, 3, 4, 5, 6)));
    

  • split_to_tuple_at

    let t = (1, 2, 3, 4, 5, 6);
    
    let a = t.split_to_tuple_at_1();
    assert_eq!(a, ((1,), (2, 3, 4, 5, 6)));
    
    let b = t.split_to_tuple_at_3();
    assert_eq!(b, ((1, 2, 3), (4, 5, 6)));
    
    let c = t.split_to_tuple_at_5();
    assert_eq!(c, ((1, 2, 3, 4, 5), (6,)));
    

  • split_to_tuple_by

    let t = (1, 2, 3, 4, 5, 6);
    let t2 = (1, 2, 3, 4, 5);
    
    let a = t.split_to_tuple_by_2();
    assert_eq!(a, ((1, 2), (3, 4), (5, 6)));
    
    let b = t2.split_to_tuple_by_2();
    assert_eq!(b, ((1, 2), (3, 4), (5,)));
    
    let c = t.split_to_tuple_by_3();
    assert_eq!(c, ((1, 2, 3), (4, 5, 6)));
    
    let d = t2.split_to_tuple_by_3();
    assert_eq!(d, ((1, 2, 3), (4, 5)));
    
    let e = t.split_to_tuple_by_6();
    assert_eq!(e, (((1, 2, 3, 4, 5, 6),)));