std-macro-extensions 1.0.1

A collection of macro extensions for Rust's standard library data structures, simplifying the creation and manipulation of common collections such as HashMap, Vec, and more.
Documentation 
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/// Creates a new `RefCell` instance.
///
/// This macro takes a value and wraps it in a `RefCell`, providing interior mutability with dynamic borrow checking.
/// `RefCell` allows mutable access to its contents even when it is shared among multiple references.
#[macro_export]
macro_rules! refcell {
    ($val:expr) => {
        std::cell::RefCell::new($val)
    };
}