hasDuplicates

Checks if an array contains duplicate values.

Usage

import { hasDuplicates } from 'rattail'

hasDuplicates([1, 2, 3, 2]) // true
hasDuplicates([1, 2, 3]) // false

Arguments

Arg	Type	Defaults
arr	Array

Return

Type
boolean

Notes

• Returns true if any value appears more than once in the array.
• Uses strict equality for comparison.