The shape of small tools

June 8, 2026

A placeholder post with enough structure to exercise the table of contents, themed code blocks, and prerendered math.

Why small tools

Good tools do one thing. The cost of a tool is not its size but its surface area — the number of ways it can surprise you. Inline math like $O(n \log n)$ should sit naturally in a sentence.

A little code

fn main() {
    let xs = vec![3, 1, 2];
    let mut sorted = xs.clone();
    sorted.sort();
    println!("{sorted:?}");
}

A little math

The quadratic formula, rendered to static HTML at build time:$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \quad\text{where}\quad a_i \neq b_j$$

Closing

That’s the whole post. Three headings, one code block, one inline and one display equation.