HeNeos blog

Josue H. @ JP Morgan Chase

HeNeos

Dev Log

Genuine Sieve
A raw implementation of Eratosthenes' Sieve in functional programming.
Added: 2025-10-29
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Learn Lambda Calculus in 10 minutes with OCaml
A fast introduction to lambda calculus using OCaml.
Added: 2025-10-29
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Pragmatic Category Theory
A practical introduction to category theory concepts.
Added: 2025-10-29
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Rego 101: Introduction to Rego
Learn the basics of Rego and policy-based authorization.
Added: 2025-10-29
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[Tutorial] Knapsack, Subset Sum and the (max,+) Convolution
Understanding DP optimizations and (max,+) convolution in competitive programming.
Added: 2025-10-29
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The ruliology of lambdas
Stephen Wolfram explores lambda calculus through the lens of ruliology.
Added: 2025-10-29
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Numbat
Numbat is a statically typed programming language for scientific computations with first class support for physical dimensions and units.
Added: 2025-10-29
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Mojo
Mojo is a programming language that unifies high-level AI development with low-level systems programming. Write once, deploy everywhere - from CPUs to GPUs
Added: 2025-10-29
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Pytoolz
A set of utility functions for iterators, functions, and dictionaries.
Added: 2025-10-29
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Jujutsu for busy devs
Jujutsu (jj) is a version control system with a significantly simplified mental model and command-line interface compared to Git, without sacrificing expressibility or power
Added: 2025-10-29
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The confused deputy problem
The confused deputy problem is a security issue where an entity that doesn't have permission to perform an action can coerce a more-privileged entity
Added: 2025-10-29
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DiggyDB
A lightweight Node.js key-value store with a simple file-based storage engine.
Added: 2025-11-01
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Anubis
A small and elegant static site generator focused on simplicity and clean design.
Added: 2025-11-01
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k-d tree
A multidimensional binary search tree used for nearest-neighbor search and spatial indexing.
Added: 2025-11-01
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The Curse of Knowing How, or; Fixing Everything
A reflection on the cognitive trap of always wanting to fix systems once you understand them deeply.
Added: 2025-11-01
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grhkm — Mastodon
grhkm's primary Mastodon profile, focused on math and cryptography insights.
Added: 2025-11-01
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grhkm — Old Mastodon
grhkm's older Mastodon profile with infosec-related posts and discussions.
Added: 2025-11-01
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BabyRSA — Bauhinia CTF 2023 analysis
A detailed walk-through of solving the BabyRSA challenge using small-roots techniques.
Added: 2025-11-01
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Breaking perfect security with timing attacks
A great video illustrating how subtle timing differences can completely break cryptographic systems.
Added: 2025-11-01
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grhkm — Codeforces blog
Competitive programming posts, problem breakdowns, and math-heavy algorithm insights by grhkm.
Added: 2025-11-01
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grhkm — CryptoHack
grhkm's CryptoHack profile with their progress on modern cryptography challenges.
Added: 2025-11-01
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