Swift filter array of objects

Question

class book{
    var nameOfBook: String!
}

var englishBooks=[book(),book(),book()]
var arr = englishBooks.filter {
    contains($0.nameOfBook, \"rt\")
}

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Answer 1

2020 | SWIFT 5.1:

short answer:

books.filter { $0.alias.range(of: filterStr, options: .caseInsensitive) != nil }

long sample:

public filterStr = ""

public var books: [Book] = []
public var booksFiltered: [Book] {
   get {
      (filterStr.isEmpty )
         ? books
         : books.filter { $0.alias.range(of: filterStr, options: .caseInsensitive) != nil }
   }
}