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JavaScript Primer: Basics for Beginners

This guide introduces fundamental JavaScript concepts, including variables and functions, in a simple and clear way. It's designed for beginners to understand the basics and build a strong foundation.

Variables in JavaScript

What is a Variable?

A variable is like a labeled box where you store data (like numbers, text, or other values) to use later in your program. You give it a name, and you can change or retrieve its contents as needed.

How to Declare a Variable

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Palindrome Definition

A palindrome is a sequence of characters that reads the same forward and backward. This sequence can be a word, phrase, number, or any string of characters. When determining if a sequence is a palindrome, spaces, punctuation, and capitalization are often ignored, focusing only on the alphanumeric characters.

Examples:

• Word: "radar" (reads the same forward and backward)
• Phrase: "A man, a plan, a canal: Panama" (ignoring spaces, punctuation, and case, it reads "amanaplanacanalpanama")
• Number: "12321" (same when reversed)
• Non-palindrome: "hello" (reads differently when reversed: "olleh")

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Troubleshooting Firebase Expo EAS iOS Build Error

This guide provides steps to resolve the "Unknown error" in the Install pods build phase during an Expo EAS build for iOS with Firebase.

1. Check Podfile Configuration

Ensure your Podfile is correctly set up for Firebase. Below is a sample Podfile for an Expo project:

require_relative '../node_modules/react-native/scripts/react_native_pods'
require_relative '../node_modules/@react-native-firebase/app'

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PRD Generation Prompt Template

Use this prompt template to generate comprehensive Product Requirements Documents (PRDs) and associated task lists for your projects.

Prompt Template

You are an experienced product manager and technical architect. Generate a complete Product Requirements Document (PRD.md) and associated task management files for the following project:

**PROJECT DETAILS:**

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🧠 Are There Basis Vectors in Concept Embedding Spaces?

Yes — while not literal basis vectors like in linear algebra, there are useful analogues in neural embedding spaces that serve similar purposes.

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🧭 Quick Linear Algebra Refresher

• A basis is a minimal set of vectors that span a space.
• Any vector can be written as a linear combination of basis vectors.
• In 3D space: v = a·x̂ + b·ŷ + c·ẑ

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🧠 Why Are They Called "Neural" Networks?

The term "neural network" is mostly metaphorical. While inspired by biology, artificial neural networks differ greatly from real brains.

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✅ What Neural Nets Share with the Brain

1. Basic Neuron Inspiration

• Inspired by biological neurons: take inputs, apply weights, sum them, and fire if a threshold is crossed.

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🧠 What LLMs Struggle With: The Limits of Vectorization

LLMs work best when tasks can be converted into vectors — when meaning and relationships can be embedded in continuous space. But there are important areas where this approach falls short:

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🧭 1. Common Sense That Requires Physical Grounding

LLMs lack sensory experience and embodied reasoning. They struggle with:

• Spatial logic ("Will this fit through the door?")
• Physical dynamics ("Will the stack fall over?")

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🧠 Preventing Models from Learning Flawed Patterns

Even if data is clean and neatly converted into tensors, models can still learn false patterns if the underlying data is flawed. Here's how to mitigate that risk:

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🔍 1. Data Auditing and Exploration

• Check distributions: Look for imbalances in class labels, demographics, etc.
• Verify labels: Ensure labeling quality — are there systematic labeling errors or biases?

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Utility Profit API Usage Guide

This document provides a comprehensive guide for using the Utility Profit API to automate utility service registration and management.

Table of Contents

• Overview
• Prerequisites
• API Authentication
• End-to-End Workflow

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Utility Profit API Curl Examples

Base URL: https://api-dev.utilityprofit.com/web

Activations

Get Activation by ID

curl -X GET "https://api-dev.utilityprofit.com/web/activations/{activationItemId}"