iof 0.5.0

Read from and write data to console or file in simple formats.
Documentation 
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//! Dimension markers.

/// A trait for types with a dimension.
pub trait Dimension {
    /// Dimension.
    ///
    /// Currently this is only a marker in most cases,
    /// but it can be used after feature `generic_const_exprs` is stable.
    /// See <https://github.com/rust-lang/rust/issues/60551>.
    const DIMENSION: usize;
    /// Need space between every two items?
    const SPACE: bool;

    /// Get the default separator according to the dimension and space.
    #[inline]
    fn get_default_separator() -> &'static str {
        match (Self::DIMENSION, Self::SPACE) {
            (1, true) => " ",
            (1, false) => "",
            (2, true | false) => "\n",
            // Dimension > 2 is not supported.
            (0 | 3.., _) => {
                unimplemented!(
                    "Default separator for dimension {} is not supported.",
                    Self::DIMENSION,
                )
            }
        }
    }
}

impl<T: Dimension + ?Sized> Dimension for &T {
    const DIMENSION: usize = T::DIMENSION;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension + ?Sized> Dimension for &mut T {
    const DIMENSION: usize = T::DIMENSION;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension + ?Sized> Dimension for Box<T> {
    const DIMENSION: usize = T::DIMENSION;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension + ?Sized> Dimension for std::rc::Rc<T> {
    const DIMENSION: usize = T::DIMENSION;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension + ?Sized> Dimension for std::sync::Arc<T> {
    const DIMENSION: usize = T::DIMENSION;
    const SPACE: bool = T::SPACE;
}

// Implementation for higher-dimension types.
impl<T: Dimension> Dimension for Vec<T> {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension> Dimension for [T] {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension, const N: usize> Dimension for [T; N] {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension> Dimension for std::collections::BTreeSet<T> {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension> Dimension for std::collections::HashSet<T> {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension> Dimension for std::collections::VecDeque<T> {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension> Dimension for std::collections::LinkedList<T> {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}
impl<T: Dimension> Dimension for std::collections::BinaryHeap<T> {
    const DIMENSION: usize = T::DIMENSION + 1;
    const SPACE: bool = T::SPACE;
}