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Writing a C compiler in 500 lines of Python (2023)

Writing a C compiler in 500 lines of Python Posted August 30, 2023 A few months ago, I set myself the challenge of writing a C compiler in 500 lines of Python , after writing my SDF donut post. How hard could it be? The answer was, pretty hard, even when dropping quite a few features. But it was also pretty interesting, and the result is surprisingly functional and not too hard to understand! There's too much code for me to comprehensively cover in a single blog post , so I'll just give an ove

Topics: code emit i32 lexer type

Writing a C compiler in 500 lines of Python

Writing a C compiler in 500 lines of Python Posted August 30, 2023 A few months ago, I set myself the challenge of writing a C compiler in 500 lines of Python , after writing my SDF donut post. How hard could it be? The answer was, pretty hard, even when dropping quite a few features. But it was also pretty interesting, and the result is surprisingly functional and not too hard to understand! There's too much code for me to comprehensively cover in a single blog post , so I'll just give an ove

Topics: code emit i32 lexer type

Bidirectional Signals from the Emitter's Perspective in PHP

A New Observer Pattern: Bidirectional Signals from the Emitter’s Perspective in PHP Morteza 5 min read · Aug 23, 2025 -- Listen Share Press enter or click to view image in full size php-repos’s observer pattern Introduction: Shifting the Observer Perspective In software, the traditional observer pattern is often designed with the observer in mind: an event happens, like a user logging in, and a handler — say, a logger — reacts by recording it. This perspective assumes the observer (the handle

Yosemite embodies the long war over US national park privatization

The Trump administration’s cuts to the National Park Service’s budget and staffing have raised concerns among park advocates and the public that the administration is aiming to further privatize the national parks. The nation has a long history of similar efforts, including a wildly unpopular 1980 attempt by Reagan administration Interior Secretary James Watt to promote development and expand private concessions in the parks. But debate over using public national park land for private profit da

The AI Hype Index: The White House’s war on “woke AI”

Separating AI reality from hyped-up fiction isn’t always easy. That’s why we’ve created the AI Hype Index—a simple, at-a-glance summary of everything you need to know about the state of the industry. The Trump administration recently declared war on so-called “woke AI,” issuing an executive order aimed at preventing companies whose models exhibit a liberal bias from landing federal contracts. Simultaneously, the Pentagon inked a deal with Elon Musk’s xAI just days after its chatbot, Grok, spout

The axion may help clean up the messy business of dark matter

In recent years, a curious hypothetical particle called the axion, invented to address challenging problems with the strong nuclear force, has emerged as a leading candidate to explain dark matter. Although the potential for axions to explain dark matter has been around for decades, cosmologists have only recently begun to seriously search for them. Not only might they be able to resolve some issues with older hypotheses about dark matter, but they also offer a dizzying array of promising avenue

Aspora gets $50M from Sequoia to build remittance and banking solutions for Indian diaspora

India has been one of the top recipients of remittances in the world for more than a decade. Inward remittances jumped from $55.6 billion in 2010-11 to $118.7 billion in 2023-24, according to data from the country’s central bank. The bank projects that figure will reach $160 billion in 2029. This means there is an increasing market for digitalized banking experiences for non-resident Indians(NRIs), ranging from remittances to investing in different assets back home. Aspora (formerly Vance) is

Aspora gets $50M from Sequioa to build remittance and banking solutions for Indian diaspora

India has been one of the top recipients of remittances in the world for more than a decade. Inward remittances jumped from $55.6 billion in 2010-11 to $118.7 billion in 2023-24, according to data from the country’s central bank. The bank projects that figure will reach $160 billion in 2029. This means there is an increasing market for digitalized banking experiences for non-resident Indians(NRIs), ranging from remittances to investing in different assets back home. Aspora (formerly Vance) is

NASA Satellite Captures Massive Wastewater Flow off California Coast

In 2022, NASA’s Jet Propulsion Laboratory launched a satellite sensor to map minerals in the Earth’s dusty, arid regions. But that’s not all it’s useful for—in a new study, scientists used the spectroscopic tool to study massive amounts of sewage flowing into the sea off the Southern California coast. Every year, millions of gallons of untreated and treated wastewater are unceremoniously dumped into the Tijuana River, ferrying pollution through communities on both sides of the U.S.-Mexico borde