Ruby – Code Snippets

Category: Utilities

tags:

Minitest Testing

Unit Tests with Minitest

Stdlib Minitest spec — no extra gems needed.

Author: chris

Language: Ruby

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Category: Utilities

tags:

Memoization Performance

Memoize a Method in Ruby

Cache an expensive call with the `||=` idiom.

Author: chris

Language: Ruby

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Category: Utilities

tags:

Identifiers Uuid

Generate a UUID in Ruby

Generate a v4 UUID with the SecureRandom stdlib.

Author: chris

Language: Ruby

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Category: CLI & System

tags:

Args Cli Optionparser

OptionParser CLI in Ruby

Parse CLI flags with the stdlib OptionParser.

Author: chris

Language: Ruby

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Category: Concurrency

tags:

Concurrency Tag Http Threads

Threaded HTTP Requests in Ruby

Fan out HTTP calls across threads and join them.

Author: chris

Language: Ruby

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Category: Database

tags:

Activerecord Orm Sql

ActiveRecord Query Snippet

Define a model and run a chained where/order query with ActiveRecord.

Author: chris

Language: Ruby

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Category: Web Development

tags:

Routes Sinatra Web

Sinatra Hello World

Bare-minimum Sinatra app responding to GET /.

Author: chris

Language: Ruby

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Category: File I/O

tags:

File Glob Recursion

Recursive Glob in Ruby

Find every `.rb` file under a tree with Dir.glob and `**` recursion.

Author: chris

Language: Ruby

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Category: Sorting & Data Structures

tags:

Arrays Hashes Sort

Sort Array of Hashes by Key

Sort an array of hashes by a numeric attribute using sort_by.

Author: chris

Language: Ruby

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Category: Strings & Text

tags:

Capture Regex

Regex Named Captures in Ruby

Use named captures and MatchData to extract fields.

Author: chris

Language: Ruby

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