类似于JavaScript的Swift数组：swift-javascriptish-arrays
swift-javascriptish-arrays 是一个类似 JavaScript的Swift 数组扩展。
push
添加多个元素到一个数组：
var fruits = ["Banana", "Orange"] fruits.push("Apple") fruits.push("Kiwi", "Papaya") // fruits == ["Banana", "Orange", "Apple", "Kiwi", "Papaya"] pop
移除和返回数组的最后一个元素：
var fruits = ["Apple", "Banana", "Orange"] var popped = fruits.pop() // popped == "Orange" // fruits == ["Apple", "Banana"]
shift
移除和返回数组的第一个项：
var fruits = ["Banana", "Orange", "Apple", "Mango"] var shifted = fruits.shift() // shifted == "Banana" // fruits == ["Orange", "Apple", "Mango"]
unshift
从数组开始位置添加新元素：
var fruits = ["Banana", "Orange"] fruits.unshift("Lemon","Pineapple") // fruits == ["Lemon","Pineapple", "Banana", "Orange"] concat
假如多个数组，不改变现有的数组，但是会返回一个新的数组：
var yellowFruits = ["Banana", "Lemon"] var otherFruits = ["Orange", "Apple"] var allFruits = yellowFruits.concat(otherFruits) // allFruits == ["Banana","Lemon", "Orange", "Apple"]
indexOf
Searches the array for the specified item, and returns its position. The search will start at the specified position, or at the beginning if no start position is specified, and end the search at the end of the array. Returns -1 if the item is not found. If the item is present more than once, the indexOf method returns the position of the first occurence.
var fruits = ["Banana", "Orange", "Apple", "Mango"] var a = fruits.indexOf("Apple") // a == 2 var fruits = ["Banana", "Orange", "Apple", "Mango", "Banana", "Orange", "Apple"] var a = fruits.indexOf("Apple", startIndex:4) // a == 6 join
Joins all elements of an array into a string
var fruits = ["Banana", "Orange", "Apple", "Mango"] var result = fruits.join() // result = "Banana,Orange,Apple,Mango" var fruits = ["Banana", "Orange", "Apple", "Mango"] var result = fruits.join(separator:" & ") // result = "Banana & Orange & Apple & Mango"
slice
Returns the selected elements in an array, as a new array object. Method selects the elements starting at the given start argument, and ends at, but does not include, the given end argument. The original array will not be changed.
var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"] var myBest = fruits.slice(-3, -1) // myBest == ["Lemon","Apple"]
splice
Adds/removes items to/from an array at position, and return the removed items.
var fruits = ["Banana", "Orange", "Apple", "Mango"] var spliced = fruits.splice(index:2, howMany:1, elements: "Lemon", "Kiwi") // spliced == ["Apple"] // fruits == ["Banana","Orange","Lemon","Kiwi","Mango"]