std_macro_extensions/binary_heap/
macro.rs

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/// Creates a new `BinaryHeap<T>`.
///
/// This macro provides two ways to initialize a `BinaryHeap`:
///
/// 1. **Empty Heap**:
///    - Calling `binary_heap!()` creates an empty `BinaryHeap`.
///
/// 2. **With Elements**:
///    - You can initialize a `BinaryHeap` with elements by providing a comma-separated list of values, e.g., `binary_heap!(1, 2, 3)`.
///    - This will create a `BinaryHeap` containing the specified elements.
///
/// # Examples
///
/// ```
/// use std::collections::BinaryHeap;
/// let empty_heap: BinaryHeap<i32> = binary_heap!();
/// let number_heap: BinaryHeap<i32> = binary_heap!(3, 1, 4, 2);
/// ```
#[macro_export]
macro_rules! binary_heap {
    () => {
        std::collections::BinaryHeap::new()
    };
    ($($elem:expr),*) => {
        std::collections::BinaryHeap::from(vec![$($elem),*])
    };
}