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Ruby Array Methods

Tracy Atteberry

2024-11-26 217 words 2 minutes

/posts/ruby_array_methods/fruit_array.jpg

Contents

Ruby Array Methods

I wondered if this information would be more digestible using fruit. The taste test is ongoing.

Input	Method	Output
[🍋, 🍋, 🍋]	`all? { \|🧺\| 🧺 == 🍋 }`	true
[🍋, 🍋, 🍊]	`any? { \|🧺\| 🧺 == 🍊 }`	true
[🍋, 🍋, 🍋]	`count`	3
[🍋, 🚫, 🍋]	`compact`	[🍋, 🍋]
[🍋, 🍉, 🍋, 🍊]	`first`	🍋
[[🍋, 🍊, 🍉], [🍋, 🍊, 🍉]]	`flatten`	[🍋, 🍊, 🍉, 🍋, 🍊, 🍉]
[🍋, 🍉, 🍋, 🍊]	`include?(🍉)`	true
[🍋, 🍉, 🍋, 🍊]	`join`	🍋🍉🍋🍊
[🍋, 🍉, 🍋, 🍊]	`last`	🍊
[🍋, 🍉, 🍌]	`map { \|🧺\| 🧺 * 2 }`	[🍋🍋, 🍉🍉, 🍌🍌]
[🍋, 🍉, 🍋, 🍊]	`none? { \|🧺\| 🧺 == 🍎 }`	true
[🍋, 🍉, 🍋, 🍊]	`one? { \|🧺\| 🧺 == 🍋 }`	false
[🍋, 🍋, 🍊]	`reject { \|🧺\| 🧺 == 🍋 }`	[🍊]
[🍋, 🍉, 🍋, 🍊]	`reverse`	[🍊, 🍋, 🍉, 🍋]
[🍋, 🍊, 🍉, 🍌, 🍎, 🍒]	`rotate(2)`	[🍉, 🍌, 🍎, 🍒, 🍋, 🍊]
[🍋, 🍋, 🍊]	`select { \|🧺\| 🧺 == 🍋 }`	[🍋, 🍋]
[🍋, 🍉, 🍋, 🍊]	`slice(1..2)`	[🍉, 🍋]
[[🍋, 🍊, 🍉], [🍋, 🍊, 🍉]]	`transpose`	[[🍋, 🍋], [🍊, 🍊], [🍉, 🍉]]
[🍋, 🍉, 🍋, 🍊]	`uniq`	[🍋, 🍉, 🍊]
[🍋, 🍋, 🍊]	`zip([🍉, 🍉, 🍉])`	[[🍋, 🍉], [🍋, 🍉], [🍊, 🍉]]

🚫 = nil