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 `Box` instance.
///
/// This macro takes an expression and wraps it in a `Box`. It offers a more concise syntax compared to the standard `Box::new` function.
#[macro_export]
macro_rules! boxed {
    ($val:expr) => {
        std::boxed::Box::new($val)
    };
}