searching arrays in apple swift. Search for matching strings and strings containing other strings.

search-array.swift

class Person {
    var name = ""
    var age = 0
    
    init(name: String, age:Int) {
        self.name = name
        self.age = age
    }
}

var people = [ Person(name: "bob", age: 23), Person(name: "alice", age: 56), Person(name: "david", age: 88)]

// search people for those called bob
let bobs = filter(people) { $0.name == "bob" }

println("found \(bobs.count) bobs");
for person in bobs {
    println(person.name);
}

// I can't find an equivalent to the _.find command in underscore (i.e. stop after first match..) 
// Could probably write one I suppose.

let iInName = filter(people) { $0.name.rangeOfString("i") != nil }

println("found \(iInName.count) names with i in");
for person in iInName {
    println(person.name);
}

// Now try people over 30
let notYoung = filter(people) { $0.age > 30 }

println("found \(notYoung.count) people over 30")

// map nicer than for in..!
notYoung.map() { println("a" + $0.name) }

I really like the $0 syntax in swift, so short and simple (represents the first parameter to the closure, e.g the person instance to filter with).

:) nice one ninja..

if I want to search for the name and the age?? how the filter should be.

if I want to search for the name and the age?? how the filter should be.

just add expressions as you want to the { }