VideoCarp

Lexing for beginners

This is a guide that should teach you how to perform basic lexing in a functional programing language.
Everything was written in Elixir, but you should be able to follow it if you are using any functional programming language.
Or even an imperative programming language like Python, C or Java.\

What is lexing?

The first question you should ask yourself is, what is lexing? It's the same as tokenising, scanning or lexical analysis.
That might not help you if you haven't heard of these either. Put simply, lexing is the process of breaking down a string
into meaningful units, indepdendent of context. What a lexer will do is make the following happen:

ClementNerma

ZSH CheatSheet

This is a cheat sheet for how to perform various actions to ZSH, which can be tricky to find on the web as the syntax is not intuitive and it is generally not very well-documented.

Strings

Description	Syntax
Get the length of a string	${#VARNAME}
Get a single character	${VARNAME[index]}

stellakunzang

README Spike

1. What is a README?

(high level overview)

A helpful reference document attached to your project that offers:

- overview of the project 
- explanation of file structure

• instructions for cloning/forking and running the project locally

JaimeStill

Syntax Highlight Guide Notes

• Visual Studio Code - Syntax Highlight Guide
• Visual Studio Code - Color Theme Guide
• Visual Studio Code - Theme Color Reference
• Visual Studio Code - Color Themes
• TextMate
• Intro to TextMate
• Creating a VS Code Theme

kirillshevch

Run rails new --help to see all of the options you can use to create a new Rails application:

Output for Rails 8+

Usage:
  rails COMMAND [options]

You must specify a command:

lisawolderiksen

Using Git Commit Message Templates to Write Better Commit Messages

The always enthusiastic and knowledgeable mr. @jasaltvik shared with our team an article on writing (good) Git commit messages: How to Write a Git Commit Message. This excellent article explains why good Git commit messages are important, and explains what constitutes a good commit message. I wholeheartedly agree with what @cbeams writes in his article. (Have you read it yet? If not, go read it now. I'll wait.) It's sensible stuff. So I decided to start following the

iandouglas

Intro to Co-Authored Git Commits

Why

In student projects, I commonly look at contribution graphs to see how much code they worked on, to get an idea if one student is doing more work than others on the project. This can be used for coaching and performance grading.

How

Start with your ~/.gitconfig file in your home folder. Add these lines:

miglen

List of Linux networking tools

netstat (ss)

Displays contents of /proc/net files. It works with the Linux Network Subsystem, it will tell you what the status of ports are ie. open, closed, waiting, masquerade connections. It will also display various other things. It has many different options. Netstat (Network Statistic) command display connection info, routing table information etc. To displays routing table information use option as -r.

Sample output:

Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4 0 0 127.0.0.1.62132 127.0.0.1.http ESTABLISHED

acamino

Shortcut — Action

• CTRL + A — Move to the beginning of the line
• CTRL + E — Move to the end of the line
• CTRL + [left arrow] — Move one word backward (on some systems this is ALT + B)
• CTRL + [right arrow] — Move one word forward (on some systems this is ALT + F)
• CTRL + U — (bash) Clear the characters on the line before the current cursor position
• CTRL + U —(zsh) If you're using the zsh, this will clear the entire line
• CTRL + K — Clear the characters on the line after the current cursor position
• ESC + [backspace] — Delete the word in front of the cursor

eliotsykes

Run rails new --help to view all of the options you can pass to rails new:

$ bin/rails new --help
Usage:
  rails new APP_PATH [options]

Options:
  -r, [--ruby=PATH]                                      # Path to the Ruby binary of your choice
                                                         # Default: /Users/eliot/.rbenv/versions/2.2.0/bin/ruby