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//!
//! Provides types which receive a borrowed value,
//! and return a new, owned value.
//!
//! ![transformer diagram][transformer-diagram]
pub use Heap;
pub use Lambda;
/// A [`Transformer`] receives a borrowed value
/// and creates a new value of a
/// possibly different type, giving ownership to
/// the caller.
/// Exposes the [`Transformer`] type at the
/// library level.