Lydia Cupery on Atomic Spin

Development

Versioned Records – Part 1: Storing Variable Attributes in a Version Table

Records may have variable attributes that change over time. To find which variable attributes are effective for a given date, we maintain a few invariants.

Web Apps

Scrollable Grid with Just-in-Time Data Loading – Part 5: Hooking Up the Database

How to update our GraphQL resolver to query our database, creating a truly full-stack implementation of just-in-time data loading.

Web Apps

Scrollable Grid with Just-in-Time Data Loading – Part 4: Fetching Data with Apollo Client and GraphQL

How to use Apollo Client to fetch data in batches from a GraphQL endpoint and hook that data up to Infinite Loader.

Web Apps

Scrollable Grid with Just-in-Time Loading – Part 3: Using React Table with React Window

An overview of how React Table can be used to simplify rendering logic for React Window's virtualized Grid component.

Web Apps

Scrollable Grid with Just-in-Time Data Loading – Part 2: Storing and Restoring Scroll Position with React Window

To restore the user to their previous scroll location, create a bit of state storing the user's most recent scroll location, then navigate the user to their most recent scroll loca

Web Apps

Scrollable Grid with Just-in-Time Data Loading – Part 1: Using React Window

React-window's infinite loader provides a loader to fetch data in batches, and react-window supplies UI components that render a windowed chunk of rows.

DevOps & System Admin.

Updating AWS Lambda Function Code when Local Files Change

How to use "make" to update AWS Lambda layer and AWS Lambda function configuration and code whenever local files change.

Platforms & Languages

Asking for Things in SQL: Postgres Conditional Expressions and Window Functions

Using conditional expressions (CASE AND COALESCE) and window functions to define database views in Postgres.

Web Apps

Recursion in the Real World – Using Recursive Algorithms in Web Dev

Recursion isn't just useful in algorithms class. We use it for things like parsing spaces off an object and defining types in Typescript, querying info about nester hierarchies in

Extracurricular Activities

How to Connect Raspberry Pi to a Laptop in 6 Easy Steps

A laptop and an internet connection are all you need to get started working with your Raspberry Pi. It only takes 6 quick steps.

Web Apps

Single Sign-On/Sign-Out With SAML 2.0

An introduction to single sign-on/single sign-out, and a step-by-step overview of the SAML 2.0 flow for Login and Logout.

Extracurricular Activities

Computer Science for Middle Schoolers – BOGO Sort, Insertion Sort, and Bubble Sort

Sorting algorithms introduce some core concepts of computer science: time complexity and algorithmic thinking.

Lydia Cupery

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