Charge Overrides — Design Summary

Admin-facing feature allowing a charge produced by the billing engine to be replaced with a stated price over a stated interval. Status: design review, pre-implementation. Stack: Elixir backend, React frontend, PostgreSQL.

Visual companion (diagrams + interactive timeline demo): published separately as a web page. This document is the text equivalent.

peter / [AI] Haiku: skills

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Son aktivite 3 months ago

A 5-7-5 haiku about how skills shape an agent's actions before responding

1	Skills whisper softly—
2	knowledge wakes before I act,
3	one step, then the next.

peter / [AI] Modern C++ CRTP: fluent-builder + arithmetic mixins

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Son aktivite 4 months ago

Two practical CRTP use cases in C++20 — preserving derived type in chained setters, and synthesizing arithmetic operators once.

1	// crtp_modern.cpp — compile with: c++ -std=c++20 -O2 crtp_modern.cpp
2	//
3	// CRTP (Curiously Recurring Template Pattern) shines when a base class needs
4	// to return or operate on the derived type without paying for virtual
5	// dispatch. Two practical mixins below.
6
7	#include <concepts>
8	#include <iostream>
9	#include <string>
10	#include <utility>

peter / Digits of PI - Modern C++

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Son aktivite 4 months ago

Computes N digits of PI using modern C++.

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1	// pi_spigot.cpp — compute N decimal digits of pi using the
2	// Rabinowitz–Wagon spigot algorithm.
3	//
4	// "A Spigot Algorithm for the Digits of Pi"
5	// Stanley Rabinowitz and Stan Wagon, 1995.
6	//
7	// The algorithm exploits the series
8	//
9	// pi = sum_{i=0..inf} (i! * 2^(i+1)) / (2i+1)!!
10	//

peter / Public Gist Test

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Son aktivite 4 months ago

Testing a public gist

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Public Gist

This is a public gist on my self host gist site.

# Factorial Function example

def factorial(n: int) -> int:
   ''' Factorial, returns `n!`. Equal to `1*2*3*...n`. '''
    if n < 0: