Bundler is for dependency management in ruby projects.

A ruby gem is a software package that contains a reusable ruby application or library.

rbenv is for managing multiple Ruby versions and here are some of its commonly used commands summarized for quick reference.

JavaScript typeof returns and falsy values.

How to dynamically insert js.

How to quickly generate random secure token with nodejs

How to generate 26 english letters in js.

How to view memcached data.

NPM common commands cheatsheet.

nodenv is a great tool to manage multiple NodeJS versions and here are some of its commonly used commands summarized for quick reference.