Arrays

stacks-arrays · Utilities · model-invoked

Statistical operations (average, median, mode, standard deviation, z-score, percentile, covariance) and array manipulation (unique, flatten, partition, shuffle, sample, move), behind the Arr facade.

When to reach for it

• Statistical operations (average, median, mode, standard deviation, z-score, percentile, covariance)
• Array manipulation (unique, flatten, partition, shuffle, sample, move)
• Containment checks
• The Arr facade

Covers

@stacksjs/arrays.

Inside the skill

The sections an agent reads once the skill loads.

• Key Paths
• Architecture
• Array Manipulation (helpers.ts)
• Containment Checks (contains.ts)
• Statistical Functions (math.ts)
• Arr Facade (macro.ts)
• Exported Types
• Gotchas

Where the code lives

• Core package: storage/framework/core/arrays/src/
• Package: @stacksjs/arrays

Using it

This one is model-invoked. Your agent reaches for it on its own when the task matches, and you can also call it by name:

/stacks-arrays

Source: stacks-arrays/SKILL.md. Shadow it for one project with app/Skills/stacks-arrays/SKILL.md, then re-run buddy setup:ai. See Writing your own.