Swift BasicsLesson 12Free preview

Swift Strings

This lesson is part of Swift · All levels

Summary

This lesson reviews the String data type in Swift that is fully compatible with the latest Unicode standards. Strings in Swift are efficient value types with Copy-on-Write (COW) optimization. The developer will learn text manipulation, multi-line strings with three quotes, as well as accurate character counts.

Key points

The strings in Swift fully support the international Unicode standard and emoji accuracy
Multi-line strings are flanked by three double quotes '"""...""""
The property '.count' counts the number of human display characters (grapheme clusters)
String is a value type (copied while passed), but optimized with copy-on-write

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