Comparing two strings in Swift is straightforward and can be done using the equality operator
==. This operator checks if two strings are exactly the same in terms of their characters and the order in which these characters appear.
Here’s an example:
let string1 = "Hello" let string2 = "World" let string3 = "Hello" let areStringsEqual1 = string1 == string2 // This will be false let areStringsEqual2 = string1 == string3 // This will be true
In this example:
"World"are different strings.
If you want to compare strings in a case-insensitive manner (where “hello” is considered equal to “Hello”), you can use the
uppercased() method on both strings before comparing:
let areStringsEqualCaseInsensitive = string1.lowercased() == string2.lowercased()
For locale-sensitive comparisons, where the comparison takes the user’s language and region settings into account (important in some languages), use
let comparisonResult = string1.localizedStandardCompare(string2) == .orderedSame
This method compares strings according to the rules of the current locale, which is typically the user’s locale.
String comparison in Swift is versatile and can be adapted to different needs, whether you require a simple equality check or a more complex, locale-aware comparison.