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The 29th International Obfuscated C Code Contest (IOCCC) 2025 Winners

IOCCC Year 2025

335 points

77 comments

discussion source

My automated doubt development process

How front-loading scrutiny through multi-agent validation rebuilt trust in AI-assisted development.

16 points

7 comments

discussion source

Building from Zero After Addiction, Prison, and a Felony

I spent ages 14-16 in a maximum-security juvenile prison, became a felon at 19, lost almost everything to addiction, and later rebuilt my life through software, open source, and a few people who took a chance on me. This is the condensed story, written for anyone wondering whether they have a future.

50 points

1 comments

discussion source

Win16 Memory Management

122 points

59 comments

discussion source

Cloning a Sennheiser BA2015 battery pack

75 points

13 comments

discussion source

How's Linear so fast? A technical breakdown

breakdown of the architecture behind Linear's speed: local-first sync, MobX observables, instant first loads, and a keyboard-first design.

82 points

32 comments

discussion source

A visual introduction to kernel functions

If you know the 'shape' or pattern of the given dataset, you can use the right kernel function when training a GP model. This is where domain knowledge of a given dataset can be useful. One fun thing I love about kernels is that you can add or multiply them to form composites.

6 points

0 comments

discussion source

Podman 6: machine usability improvements (2025)

76 points

5 comments

discussion source

Leiden Declaration on Artificial Intelligence and Mathematics

26 points

1 comments

discussion source

Proliferate (YC S25) is hiring to building open source Codex

About Proliferate Proliferate is building the operating system for modern engineering. We are building the company in person in SoMa, San Francisco. We care a lot about intensity, craft, and working with people who want to do the best work of their careers. We work hard, and we also take health seriously: company-expensed Whoop, meaningful health and wellness budget, and top-tier insurance. About the Founder I (Pablo) finished my master's in AI at 19 and joined Onyx (YC W24) as engineer #1, where I spent a year building enterprise AI search before starting Proliferate. You can see what I shipped there here. We’ll be working closely together. About the Role You’d be one of our first engineering hires and build the core product. This is

1 points

comments

discussion source

The complete IPv4 address space, mapped

Look up any IPv4 address. Find owner, ASN, country, city, PTR records, and CIDR. Search reverse DNS hostnames. Free, no signup.

8 points

4 comments

discussion source

Powering up a module from the IBM 604: an electronic calculator from 1948

47 points

12 comments

discussion source

You'll never guess who made the first wireless telephone

Alexander Graham Bell is widely credited with inventing the telephone, in 1876. It’s not entirely undisputed: Elisha Gray, Antonio Meucci, and Johann Philipp Reis each also have a decent claim as well, but Bell’s name is the one we most associate with the invention that lets us send a voice through a wire. So what…

33 points

5 comments

discussion source

Making Peace with Your Unlived Dreams

38 points

14 comments

discussion source

What is the purpose of the lost+found folder in Linux and Unix? (2014)

There is a folder at the root of Linux and Unix operating systems called /lost+found/ What is it for? Under what circumstances would I interact with it? How would I interact with it?

62 points

28 comments

discussion source

Why isn't the U.S. better at soccer?

Well, better at men's soccer. And can a World Cup at home finally be the breakthrough?

16 points

10 comments

discussion source

Show HN: Lathe – Use LLMs to learn a new domain, not skip past it

Generate hands-on, multi-part technical tutorials on demand, with LLM skills tuned to make content approachable. Then you work through them yourself, by hand ✋ - devenjarvis/lathe

170 points

36 comments

discussion source

Anthropic, please ship an official Claude Desktop for Linux

Preflight Checklist I have searched existing requests and this feature hasn't been requested yet This is a single feature request (not multiple features) Problem Statement Preflight note. The closest open issue is #40347. Related: #47316...

365 points

204 comments

discussion source

Silurus/ooxml: Pixel-faithful Office documents, rendered in the browser

Contribute to yukiyokotani/office-open-xml-viewer development by creating an account on GitHub.

54 points

21 comments

discussion source

Backrest – a web UI and orchestrator for restic backup

Backrest is a web UI and orchestrator for restic backup. - garethgeorge/backrest

49 points

3 comments

discussion source

On this day

A Myanmar Air Force Shaanxi Y-8 crashes into the Andaman Sea near Dawei, Myanmar, killing all 122 aboard.

2017

Top Stories from Hacker News

The 29th International Obfuscated C Code Contest (IOCCC) 2025 Winners

My automated doubt development process

Building from Zero After Addiction, Prison, and a Felony

Win16 Memory Management

Cloning a Sennheiser BA2015 battery pack

How's Linear so fast? A technical breakdown

A visual introduction to kernel functions

Podman 6: machine usability improvements (2025)

Leiden Declaration on Artificial Intelligence and Mathematics

Proliferate (YC S25) is hiring to building open source Codex

The complete IPv4 address space, mapped

Powering up a module from the IBM 604: an electronic calculator from 1948

You'll never guess who made the first wireless telephone

Making Peace with Your Unlived Dreams

What is the purpose of the lost+found folder in Linux and Unix? (2014)

Why isn't the U.S. better at soccer?

Show HN: Lathe – Use LLMs to learn a new domain, not skip past it

Anthropic, please ship an official Claude Desktop for Linux

Silurus/ooxml: Pixel-faithful Office documents, rendered in the browser

Backrest – a web UI and orchestrator for restic backup

On this day

A Myanmar Air Force Shaanxi Y-8 crashes into the Andaman Sea near Dawei, Myanmar, killing all 122 aboard.

The United Nations defines the Blue Line as the border between Israel and Lebanon.

Mount Pinatubo erupts, generating an ash column 7 kilometres (4.3 mi) high.

Surinam Airways Flight 764 crashes on approach to Paramaribo-Zanderij International Airport in Suriname because of pilot error, killing 176 of 187 aboard.

Priscilla Presley opens Graceland to the public; the bathroom where Elvis Presley died five years earlier is kept off-limits.

The Israeli Air Force destroys Iraq's Osiraq nuclear reactor during Operation Opera.

Five hundred million people watch the high day of the Silver Jubilee of Queen Elizabeth II begin on television.

Sony launches Betamax, the first videocassette recorder format.

The United States Supreme Court overturns the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution.

The Alcohol, Tobacco, and Firearms Division of the U.S. Internal Revenue Service raids the home of Ken Ballew for illegal possession of hand grenades.

Allegheny Airlines Flight 485 crashes on approach to Tweed New Haven Airport in New Haven, Connecticut, killing 28 of 31 aboard.

Six-Day War: Israeli soldiers enter Jerusalem.

The Supreme Court of the United States hands down its decision in Griswold v. Connecticut, prohibiting the states from criminalizing the use of contraception by married couples.

The Organisation Armée Secrète (OAS) sets fire to the University of Algiers library building, destroying about 500,000 books.

Lux Radio Theatre signs off the air permanently. The show launched in New York in 1934, and featured radio adaptations of Broadway shows and popular films.

Anti-Jewish riots in Oujda and Jerada take place.

Edvard Beneš resigns as President of Czechoslovakia rather than signing the Ninth-of-May Constitution, making his nation a Communist state.

The United Kingdom's BBC returns to broadcasting its television service, which has been off air for seven years because of World War II.

King Haakon VII of Norway returns from exactly five years in exile during World War II.

World War II: Battle of Normandy: At Ardenne Abbey, members of the SS Division Hitlerjugend massacre 23 Canadian prisoners of war.

World War II: The Battle of Midway ends in American victory.

World War II: Aleutian Islands Campaign: Imperial Japanese soldiers begin occupying the American islands of Attu and Kiska, in the Aleutian Islands off Alaska.

King Haakon VII, Crown Prince Olav and the Norwegian government leave Tromsø and go into exile in London. They return exactly five years later.

The Douglas DC-4E makes its first test flight.

Second Sino-Japanese War: The Chinese Nationalist government creates the 1938 Yellow River flood to halt Japanese forces. Five hundred thousand to nine hundred thousand civilians are killed.

The Lateran Treaty is ratified, bringing Vatican City into existence.

Sette Giugno: Nationalist riots break out in Valletta, the capital of Malta. British soldiers fire into the crowd, killing four people.

World War I: Battle of Messines: Allied soldiers detonate a series of mines underneath German trenches at Messines Ridge, killing 10,000 German troops.

Cunard Line's RMS Lusitania is launched from the John Brown Shipyard, Glasgow (Clydebank), Scotland.

Norway's parliament dissolves its union with Sweden. The vote was confirmed by a national plebiscite on August 13 of that year.

American Temperance crusader Carrie Nation begins her campaign of vandalizing alcohol-serving establishments by destroying the inventory in a saloon in Kiowa, Kansas.

Homer Plessy is arrested for refusing to leave his seat in the "whites-only" car of a train; he lost the resulting court case, Plessy v. Ferguson.

War of the Pacific: The Battle of Arica, the assault and capture of Morro de Arica (Arica Cape), ends the Campaña del Desierto (Desert Campaign).

One thousand eight hundred Fenian raiders are repelled back to the United States after looting and plundering the Saint-Armand and Frelighsburg areas of Canada East.

The United States and the United Kingdom agree in the Lyons–Seward Treaty to suppress the African slave trade.

The Great Reform Act of England and Wales receives royal assent.

Asian cholera reaches Quebec, brought by Irish immigrants, and kills about 6,000 people in Lower Canada.

The newspaper Gazeta de Buenos Ayres is first published in Argentina.

David Thompson reaches the mouth of the Saskatchewan River in Manitoba.

French Revolution: Day of the Tiles: Civilians in Grenoble toss roof tiles and various objects down upon royal troops.

Richard Henry Lee presents the "Lee Resolution" to the Continental Congress. The motion is seconded by John Adams and will lead to the United States Declaration of Independence.

Port Royal, Jamaica, is hit by a catastrophic earthquake; in just three minutes, 1,600 people are killed and 3,000 are seriously injured.

Louis XIV is crowned King of France.

Corpus de Sang in Barcelona: Catalan reapers riot against Spanish Royal soldiers and officers, killing the Viceroy of Catalonia, Dalmau de Queralt. Escalation of hostilities between the Principality of Catalonia and the Spanish Monarchy, leading to the Reapers' War.

The Petition of Right, a major English constitutional document, is granted royal assent by Charles I and becomes law.

The second parliament of James I of England ends after two months of deadlock and without passing any bills.

Spain and Portugal sign the Treaty of Tordesillas which divides the New World between the two countries.

Troops of the Republic of Venice capture Udine, ending the independence of the Patria del Friuli.

First Crusade: The Siege of Jerusalem begins.

Henry II, a cousin of Emperor Otto III, is elected and crowned King of Germany.

Pope John VIII recognises the Duchy of Croatia under Duke Branimir as an independent state.

Emperor Theodosius II marries Aelia Eudocia at Constantinople (Byzantine Empire).

On this day

A Myanmar Air Force Shaanxi Y-8 crashes into the Andaman Sea near Dawei, Myanmar, killing all 122 aboard.

The United Nations defines the Blue Line as the border between Israel and Lebanon.

Mount Pinatubo erupts, generating an ash column 7 kilometres (4.3 mi) high.

Surinam Airways Flight 764 crashes on approach to Paramaribo-Zanderij International Airport in Suriname because of pilot error, killing 176 of 187 aboard.

Priscilla Presley opens Graceland to the public; the bathroom where Elvis Presley died five years earlier is kept off-limits.