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Advent of Code 2025

With the start of Advent comes a new set of Advent of Code problems. My code is available at mtelvers/aoc2025.

12 Dec 2025

Marc Elvers

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Computations that differentiate, debug, and document themselves

One of the problems we wrestle with at Jane Street is how tounderstand and manage the costs associated with the positions we hold:things like margin, financi...

17 Nov 2022

Jane Street Tech Blog

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Recursion Reloaded

This post revises the recursion and describes the correct way for modelling recursive problems. Examples of sum, merge, and mergesort in OCaml are provided....

04 Dec 2014

Xinuo Chen

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