Swift BasicsLesson 14Free preview

Swift Ranges

This lesson is part of Swift · All levels

Summary

This lesson is a peek at the Range Operators in Swift that are used to express sequential range values. Swift provides an inclusive closed range operator and a half-open range operator that excludes the end limits. This range is very commonly used in for-repetition and slicing collections. (.b)

Key points

Closed Range Operator 'a...b' includes all values from a to b (included)
Half-Open Range Operator 'a..<b' includes a value from a to less than b (excluding the end limit)
One-Sided Ranges (such as 'a...' or '...b') are used to take slices of a collection to the ends
Supports the verification of membership value using the '.contains(value) method

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