lantzbuilds

Virtual List Calculator — Cascade AI Coding Exercise

Overview

Build a virtual list calculator that computes which items to render in a scrollable viewport. Get as far as you can in 20 min.

Requirements

Implement the following methods:

lantzbuilds

Event Emitter — Cascade AI Coding Exercise

Overview

Build a type-safe event emitter in TypeScript. Get as far as you can in 20 min.

Requirements

Implement the following methods:

lantzbuilds

FastAPI Concepts for Interviewers

A reference guide covering key FastAPI/Pydantic patterns used in the Employee Directory API solution.

---

1. Flask Dataclass vs Pydantic BaseModel

In the Flask solution, we use Python's built-in dataclass:

lantzbuilds

Queue Data Structures in Python — When to Use What

A practical comparison of list, deque, heapq, and queue module for queue implementations.

---

Quick Reference

Data Structure	Best For	append	pop left	pop right	peek min/max	Random Access

lantzbuilds

Making the Task Queue Thread-Safe with Python's threading

A practical guide to concurrent access patterns for shared data structures.

---

Why Thread Safety Matters

When multiple threads access shared data simultaneously, you can get race conditions — bugs that depend on unpredictable timing:

lantzbuilds

Understanding Python's heapq for Priority Queues

A practical guide using the Task Queue example.

---

The Core Problem

We need to efficiently get the highest priority task from a collection. Two approaches:

lantzbuilds

Rate Limiter — Coding Exercise

Overview

Build a simple rate limiter in Python that restricts how many requests a user can make per minute. You have approximately 15 minutes.

Requirements

Implement a class with the following method:

lantzbuilds

Task Queue Processor — Cascade AI Coding Exercise

Overview

Build a simple in-memory task queue in Python. Get as far as you can in 20 min.

Requirements

Implement a class with the following methods:

lantzbuilds

#root

lantzbuilds

Lantz Warrick

Seattle, WA 98199 | (360) 674-9928 | betalantz@gmail.com | LinkedIn | GitHub | Portfolio

Summary

---

A returning Seattle-native, I am a web and iOS developer who absorbs and applies new technologies\