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wtf is min-max-heap-rs?

nikic/min-max-heap-rs — explained in plain English

Analysis updated 2026-07-27 · repo last pushed 2018-05-04

RustAudience · developerComplexity · 2/5DormantSetup · easy

TL;DR

A Rust library providing a min-max heap data structure that efficiently tracks and removes both the smallest and largest items in a collection, acting as a two-ended priority queue.

Mindmap

mindmap
  root((repo))
    What it does
      Two-ended priority queue
      Find min and max fast
      Add and remove items efficiently
    Tech stack
      Rust
      No external dependencies
    Use cases
      Task scheduling systems
      Priority management from both ends
      Replacing two heaps with one
    Audience
      Rust developers
      Performance-focused developers

Code map

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Why would anyone build with this?

REASON 1

Build a scheduling system that can pull either the highest or lowest priority task on demand.

REASON 2

Replace two separate heaps with a single data structure to save memory and avoid sync overhead.

REASON 3

Manage a dynamic priority list where you frequently need to check or remove both extremes efficiently.

What's in the stack?

Rust

How it stacks up

nikic/min-max-heap-rs04amanrajj/netwatch0xr10t/pulsefi
Stars00
LanguageRustRustRust
Last pushed2018-05-04
MaintenanceDormant
Setup difficultyeasymoderatehard
Complexity2/53/54/5
Audiencedeveloperops devopsdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Just add the crate as a dependency in your Rust project's Cargo.toml file.

No license information was provided in the explanation.

Wtf does this do

This Rust library gives developers a data structure that can quickly find and remove both the smallest and largest items in a collection. Imagine you have a constantly changing list of priorities, and you need to efficiently grab either the highest or lowest one at any given moment. This package provides exactly that tool, acting as a two-ended priority queue. Under the hood, it works like a specialized family tree of data where items are organized so that the smallest and largest values are always sitting right at the top. When you add a new item, the structure automatically shifts things around to keep everything in order. Because of this smart arrangement, just checking what the minimum or maximum value is takes essentially no time at all. Adding a new item or removing an extreme value takes a bit more effort, scaling logarithmically with the size of the collection, which in plain terms means it stays fast and efficient even as your list grows very large. A developer would use this when building an application that needs to manage priorities from both ends. For example, if you were building a scheduling system that sometimes needs to urgently process the highest-priority task but other times needs to pull the lowest-priority background task, this tool handles both directions smoothly. Without it, a developer might have to use two separate data structures to track the minimum and maximum independently, which would use more memory and create extra work to keep them in sync. The project is built as a straightforward library meant to be added easily to existing Rust projects. It is based on an established computer science paper and mirrors patterns from Rust's own standard library, so it follows familiar conventions for developers in that ecosystem.

Yoink these prompts

Prompt 1
Help me add nikic/min-max-heap-rs to my Cargo.toml and write a basic example that pushes items in and pops both the min and max values out.
Prompt 2
Write a task scheduler in Rust using a min-max heap where I can pull the highest-priority urgent task or the lowest-priority background task depending on the situation.
Prompt 3
Show me how to use the min-max-heap crate to implement a sliding-window median finder that tracks both the minimum and maximum efficiently.
Prompt 4
Compare the performance of min-max-heap against using two separate BinaryHeaps in Rust for a double-ended priority queue use case.

Frequently asked questions

wtf is min-max-heap-rs?

A Rust library providing a min-max heap data structure that efficiently tracks and removes both the smallest and largest items in a collection, acting as a two-ended priority queue.

What language is min-max-heap-rs written in?

Mainly Rust. The stack also includes Rust.

Is min-max-heap-rs actively maintained?

Dormant — no commits in 2+ years (last push 2018-05-04).

What license does min-max-heap-rs use?

No license information was provided in the explanation.

How hard is min-max-heap-rs to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is min-max-heap-rs for?

Mainly developer.

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