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Popular Hash Programming Tips

Convert a complex nested hash to an object

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4 responses · ruby, json, hash, object

Convert Ruby hash keys to symbols

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1 response · rails, hash

Extract key/value pairs from a hash in ruby using an array of keys.

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2 responses · ruby, keys, hash, array

Count duplicate elements in ruby array (Ruby 1.9+)

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0 responses · ruby, hash, array, enumerable

Rename Hash keys

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0 responses · ruby, hash, iteration

Deleting nested hashes

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0 responses · ruby, rails, hash

Ruby hashes and "try"

Marc Anguera Insa

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1 response · ruby, rails, hash

Node.js - Create strong password hashes with this function

Sebastian Schepis

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1 response · hash, javascript, nodejs, crypto

Ruby - Instantiate Hash from Array

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1 response · ruby, hash, array

Start interactive commit messages with # (Hash)

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0 responses · commit, interactive, hash, git

Diving into ruby hashes

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2 responses · ruby, tip, hash, default

Mapping a Hash key in Mac OS X

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0 responses · terminal, keyboard, apple, os x

Read nested object property ( t('a.b.c') ) via string in JS

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0 responses · attributes, keys, hash, helper

Using Gravatar in an App (Python)

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0 responses · python, gravatar, hash, mariwahl

Access data from a hash via dot notation.

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0 responses · ruby, hash, data

Configuring DataMapper with a YAML file

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2 responses · ruby, hash, yaml, datamapper

Efficient way to protect a password on a database

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4 responses · php, security, hash, password

Symbolized Hash With Indifferent Access

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0 responses · ruby, hash, indifferentaccess, symbols

Easy MD5/SHA1 Hashes in RubyMotion

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0 responses · ruby, hash, ios, digest

Ruby Core Extends

thomas petrachi

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5 responses · ruby, rails, hash, array

Hash passwords securely

Martin Janeček

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0 responses · php, security, hash, passwords

Hash value inheritance

Stevenson Jean-Pierre

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0 responses · ruby, hash, lookup

Default value of hash (with nice examples)

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0 responses · ruby, trick, hash, array

Nested ruby hashes w/o needing ||=

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0 responses · ruby, hash

Change all ruby 1.8 hashes to 1.9

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0 responses · ruby, sed, hash

Displaying tips 1 - 25 of 34 in total

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Recent Activity

Ruby - Instantiate Hash from Array

· ruby, hash, array

Symbolized Hash With Indifferent Access

· ruby, hash, indifferentaccess, symbols

Convert a complex nested hash to an object

· ruby, json, hash, object

Recursive Hash Reduce, merging hashes while summing its values.

Lucas Neves Martins

· ruby, hash, reduce, sum

Access data from a hash via dot notation.

· ruby, hash, data

Newest Hash protips

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Coderwall Dev Community

Explore the all-time favorite tutorials, design patterns and engineering guides that thousands of readers keep sharing and coming back to, year after year.

These proven techniques, reusable code samples, programming tips and vibe coding habits earned their place through steady views and member likes.

Each entry here is still useful today, covering programming languages, frameworks and workflows that stay relevant long after they were first published.

Whether you're new to a tech stack or an experienced engineer refreshing your skills, start with the most useful tips our dev community members recommend and build on solid, well-tested coding knowledge.