Applied Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

bahadiraraz / Git_Commit_Freeze_Solution.md

Last active August 13, 2026 15:01

Git Commit Freeze Due to GPG Lock Issues (Solution)

Git Commit Freeze Due to GPG Lock Issues

If you encounter a problem where you cannot commit changes in Git – neither through the terminal nor via the GitHub Desktop application – the issue might be a freeze during the Git commit process. This is often caused by GPG lock issues. Below is a concise and step-by-step guide to resolve this problem.

Solution Steps

1. Check for GPG Lock Messages

Open your terminal and try to perform a GPG operation (like signing a test message). If you see repeated messages like gpg: waiting for lock (held by [process_id]) ..., it indicates a lock issue.

davidbarsky / SKILL-1.md

Last active August 26, 2026 08:45

my Claude skills for authoring Rust. See the first comment for installation instructions!

name	rustdoc
description	Rust documentation conventions (RFC 1574). Apply when writing doc comments on public Rust items. Covers summary sentences, section headings, type references, and examples.

Rust Documentation Conventions (RFC 1574)

Apply these rules when writing doc comments (///) on public Rust items.

Diego Parra dpsoft