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Rahul Sainani rahulsainani

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@karpathy
karpathy / llm-wiki.md
Created April 4, 2026 16:25
llm-wiki

LLM Wiki

A pattern for building personal knowledge bases using LLMs.

This is an idea file, it is designed to be copy pasted to your own LLM Agent (e.g. OpenAI Codex, Claude Code, OpenCode / Pi, or etc.). Its goal is to communicate the high level idea, but your agent will build out the specifics in collaboration with you.

The core idea

Most people's experience with LLMs and documents looks like RAG: you upload a collection of files, the LLM retrieves relevant chunks at query time, and generates an answer. This works, but the LLM is rediscovering knowledge from scratch on every question. There's no accumulation. Ask a subtle question that requires synthesizing five documents, and the LLM has to find and piece together the relevant fragments every time. Nothing is built up. NotebookLM, ChatGPT file uploads, and most RAG systems work this way.

@objcode
objcode / Stars.kt
Last active December 9, 2021 10:00
A quick animation exploration drawing a star field using Compose
/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@DavidIbrahim
DavidIbrahim / DashedBorder.kt
Last active July 16, 2026 01:07
dashedBorder modifier for android compose
import androidx.compose.foundation.BorderStroke
/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
@marcellogalhardo
marcellogalhardo / LifecycleCollect.kt
Last active June 3, 2021 08:46
Utility functions to collect coroutines Flow respecting Android's Lifecycle.
package dev.marcellogalhardo.lifecycle
import android.app.Activity
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.LifecycleCoroutineScope
import androidx.lifecycle.LifecycleOwner
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Job
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.flow.Flow
@objcode
objcode / Permissions.kt
Last active February 21, 2023 23:01
Quick demo of compose permissions using activity result API. Uses Flow instead of State to make it reusable outside of Compose.
/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@emmaguy
emmaguy / textcolor-stats.kts
Created February 17, 2020 12:41
Look at all Android layout files and collate what value is set for 'android:textColor' and count the usages of each
val textColorsUsed = mutableMapOf<String, Int>()
File("../").walkTopDown().forEach { file ->
if (file.isFile && file.extension == "xml" && file.path.contains("res/layout")) {
val builder: DocumentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder()
val xmlInput = InputSource(StringReader(file.readText()))
val doc: Document = builder.parse(xmlInput)
val androidViews = XPathFactory.newInstance()
.newXPath()
@objcode
objcode / ConcurrencyHelpers.kt
Last active August 12, 2026 13:45
Helpers to control concurrency for one shot requests using Kotlin coroutines.
/* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
@RBusarow
RBusarow / TestCoroutineExtension.kt
Last active July 11, 2025 13:30
A JUnit 4 Rule and JUnit 5 Extension for utilizing TestCoroutineDispatcher and TestCoroutineScope from kotlinx.coroutines-test
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.test.TestCoroutineDispatcher
import kotlinx.coroutines.test.TestCoroutineScope
import kotlinx.coroutines.test.resetMain
import kotlinx.coroutines.test.setMain
import org.junit.jupiter.api.extension.AfterAllCallback
import org.junit.jupiter.api.extension.AfterEachCallback
import org.junit.jupiter.api.extension.BeforeAllCallback
import org.junit.jupiter.api.extension.ExtendWith
import org.junit.jupiter.api.extension.ExtensionContext
@raulraja
raulraja / di.kt
Last active October 30, 2021 16:30
Simple Kotlin DI
package com.fortyseven.fptraining
import arrow.core.Either
import arrow.core.right
import arrow.effects.IO
import arrow.effects.extensions.io.fx.fx
data class Account(val balance: Int)
data class AccountEntity(val balance: Int)
@mrk-han
mrk-han / emulator-install-using-avdmanager.md
Last active August 26, 2026 11:25
Installing and creating Emulators with AVDMANAGER (For Continuous Integration Server or Local Use)

Install and Create Emulators using AVDMANAGER and SDKMANAGER

TL;DR

For an emulator that mimics a Pixel 5 Device with Google APIs and ARM architecture (for an M1/M2 Macbook):

  1. List All System Images Available for Download: sdkmanager --list | grep system-images

  2. Download Image: sdkmanager --install "system-images;android-30;google_atd;arm64-v8a"