Few examples from Swift and the Swift Algorithms core package

AdventOfCode+Plus.swift

import Algorithms

// The ~= operator means "contains", and is used to test if a value is within a range.
let seq = 9...13
print(seq ~= 9)   // true
print(seq ~= 50)  // false

// The .adjacentPairs() method lets you iterate through a sequence in pairs of current + next.
let pairs = ["a", "b", "c", "d"].adjacentPairs()
for pair in pairs { print(pair) }   // ("a", "b"), ("b", "c"), ("c", "d")

// The .combinations(ofCount:) method returns a collection of combination of specified count length from a sequence.
let combinations = ["a", "b", "c", "d"].combinations(ofCount: 3)
for combination in combinations { print(combination) }
// ["a", "b", "c"], ["a", "b", "d"], ["a", "c", "d"], ["b", "c", "d"]

// Source: https://x.com/SwiftLang/status/1863819687186116655