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Goby Programming Language Cheatsheet
A comprehensive reference guide for the Goby programming language: syntax, classes, modules, concurrency with channels, standard library, and Go interop.
JavaScript Date Object Cheatsheet
A quick reference guide for JavaScript Date object: instantiation, getters, setters, UTC methods, epoch timestamps, and Intl.DateTimeFormat formatting.
JavaScript Concise Idioms & Shorthands Cheatsheet
A quick reference guide for concise JavaScript programming idioms: ternary operators, nullish coalescing, optional chaining, destructuring, and short-circuit evaluation.
Kramdown Markdown Converter Cheatsheet
A quick reference guide for Kramdown in Ruby & Jekyll: extended syntax, custom attributes ({: ... }), footnotes, math, abbreviations, and table alignments.
Lua Cheatsheet
A comprehensive reference guide for Lua: syntax basics, tables and arrays, loops, control flow, metatables, object-oriented programming, and standard library APIs.
Mako Templates Cheatsheet
A quick reference guide for Mako: Python templating syntax, expressions, control structures, Python code blocks, def macros, and template inheritance.
Minitest Cheatsheet
A quick reference guide for Ruby Minitest: unit testing, BDD specs, expectation matchers, assertions, Minitest::Mock, and reporters.
Perl One-Liners (perl -pie) Cheatsheet
A quick reference guide for Perl in-place stream editing with -pie: search and replace, regular expressions, capture groups, and multi-file processing.
RSpec Cheatsheet
A comprehensive reference guide for RSpec: BDD testing in Ruby, describe, context, it, matchers, let, subject, mocks, and spies.
Ruby 2.1 Feature Cheatsheet
A historical reference guide for landmark features introduced in Ruby 2.1: required keyword arguments, def method return symbols, and rational literals.
RubyGems CLI Cheatsheet
A quick reference guide for RubyGems CLI: building, installing, publishing, yanking gems, search queries, and environment inspection.