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/// Clone variables for closure.
///
/// Convenience macro for cloning variables, especially intended to be used
/// in closures. For example, the following:
/// ```rust
/// use appy::with_clone;
/// let a=1;
/// let b=2;
/// with_clone!([a,b],||{
/// // ..
/// });
/// ```
/// Will expand to:
/// ```rust
/// use appy::with_clone;
/// let a=1;
/// let b=2;
/// {
/// let a=a.clone();
/// let b=b.clone();
/// ||{
/// // ..
/// }
/// };
/// ```
}
}
/// Clone variables for closure, and create Rc.
///
/// Does the same as [with_clone], and then also applies `Rc::new`
/// on the result.