hemeda3 / Reverse-Engineering Cursor's fast Code Search algorithm (instant grep)

Created March 24, 2026 11:53

	# Reverse-Engineering Cursor's fast Code Search algorithm

	Ahmed Yousri · March 2026

	---

	In March 2026, Cursor published a blog post titled ["Fast regex search"](https://cursor.com/blog/fast-regex-search) by Vicent Marti. It described how they'd built an indexed code search system that could find a pattern across an entire codebase in 13 milliseconds. Their claim: sparse n-gram inverted indexes, two files on disk, a single binary search on a memory-mapped lookup table.

	I read it and thought: I can build that.

hemeda3 / testing

Created September 29, 2024 03:23


	package io.mapledoum.telegram.starter.exams.tools;

	import javax.crypto.Cipher;
	import javax.crypto.spec.IvParameterSpec;
	import javax.crypto.spec.SecretKeySpec;
	import java.io.IOException;
	import java.net.URL;
	import java.security.MessageDigest;
	import java.security.NoSuchAlgorithmException;

hemeda3 / hashing.java

Created October 23, 2022 04:19

BasicHashing+UsingMultiplierToAvoidSpuriousHit+UsingModulerToAvoidLargeHashValue

	```Java

	public class test {



	public static void main(String[] args) throws Exception {

	test t = new test();

hemeda3 / mongodb-groupby-week-unwind-array-withoutFieldNames

Last active September 29, 2022 02:26

MongoDB+NodeJs script, that take string date convert it to ISO date, then extract ISO week number then count total per weekNo then calc average, then convert weeknumber to date range for readability

	```javascript

	var mongoose = require('mongoose');

	//Set up default mongoose connection
	async function calcSumByWeek() {


	const weeklypipeline = [

hemeda3 / memoize-until.js

Created June 2, 2022 08:39 — forked from bezhermoso/memoize-until.js

`memoizeUntil` -- memoize function for n milliseconds

	var R = require("ramda");

	var memoizeUntil = function (fn, expiry) {

	var cache = {};
	var onExpiry = [];
	var onCache = [];
	var onCachedResult = [];

	var memoized = function () {

hemeda3 / Keycloak JWT Token validation in Bash

Created March 6, 2022 10:15 — forked from justindav1s/Keycloak JWT Token validation in Bash

	#!/bin/bash

	# This script requires jq, a command line to to parse and format JSon.
	# https://stedolan.github.io/jq/

	function padBase64 {
	STR=$1
	MOD=$((${#STR}%4))
	if [ $MOD -eq 1 ]; then
	STR="${STR}="

hemeda3 / A simple Docker and Docker Compose install script for Ubuntu.md

Created February 7, 2022 01:58 — forked from EvgenyOrekhov/A simple Docker and Docker Compose install script for Ubuntu.md

A simple Docker and Docker Compose install script for Ubuntu

Usage

sh install-docker.sh
log out
log back in

Links

hemeda3 / README.md

Created February 7, 2022 01:39 — forked from wuriyanto48/README.md

Kafka, Redis, Elastic Search, Mongodb with docker compose

Run

$ docker-compose up

hemeda3 / custom-my-account-endpoint.php

Created January 9, 2022 18:44 — forked from claudiosanches/custom-my-account-endpoint.php

Example of custom My Account endpoint.

	<?php
	class My_Custom_My_Account_Endpoint {

	/**
	* Custom endpoint name.
	*
	* @var string
	*/
	public static $endpoint = 'my-custom-endpoint';

hemeda3 / display-attributes-as-table.php

Created January 1, 2022 09:13 — forked from helgatheviking/display-attributes-as-table.php

Display the WooCommerce product attributes as a table element via shortcode [display_attributes]

	<?php

	/**
	* Attributes shortcode callback.
	*/
	function so_39394127_attributes_shortcode( $atts ) {

	global $product;

	if( ! is_object( $product ) \|\| ! $product->has_attributes() ){