ExSwift

JavaScript (Lo-Dash, Underscore) & Ruby inspired set of Swift extensions for standard types and classes.

Contents

• ExSwift extensions

  • Array
    • Instance Methods
    • Class Methods
    • Operators
  • Int
    • Instance Methods
    • Class Methods
  • Float
    • Instance Methods
    • Class Methods
  • String
    • Properties
    • Instance Methods
    • Class Methods
    • Operators
  • Range
    • Instance Methods
    • Class Methods
    • Operators
  • Dictionary
    • Instance Methods
    • Operators
  • NSArray
    • Instance Methods

• Utilities

  • Class Methods

Extensions

Array

Examples in the Wiki

Instance Methods

Name	Signature
first	first () -> Element?
last	last () -> Element?
get	get (index: Int) -> Element?
remove	remove <U: Equatable> (element: U)
at	at (indexes: Int...) -> Array
take	take (n: Int) -> Array
takeWhile	takeWhile (condition: (Element) -> Bool) -> Array
tail	tail (n: Int) -> Array
skip	skip (n: Int) -> Array
skipWhile	skipWhile (condition: (Element) -> Bool) -> Array
contains	contains <T: Equatable> (item: T...) -> Bool
difference	difference <T: Equatable> (values: Array<T>...) -> Array<T>
intersection	intersection <U: Equatable> (values: Array<U>...) -> Array
union	union <U: Equatable> (values: Array<U>...) -> Array
unique	unique <T: Equatable> () -> Array<T>
indexOf	indexOf <T: Equatable> (item: T) -> Int?
lastIndexOf	lastIndexOf <T: Equatable> (item: T) -> Int?
zip	zip (arrays: Array<Any>...) -> Array<Array<Any?>>
partition	partition (var n: Int, var step: Int? = nil) -> Array<Array<Element>> partition (var n: Int, var step: Int? = nil, pad: Element[]?) -> Array<Array<Element>>
partitionAll	partitionAll (var n: Int, var step: Int? = nil) -> Array<Array<Element>>
partitionBy	partitionBy <T: Equatable> (cond: (Element) -> T) -> Array<Array<Element>>
shuffle	shuffle ()
shuffled	shuffled () -> Array
sample (random)	sample (size n: Int = 1) -> Array<T>
max	max <T: Comparable> () -> T
min	min <T: Comparable> () -> T
each	each (call: (Element) -> ()) each (call: (Int, Element) -> ())
eachRight	eachRight (call: (Element) -> ()) eachRight (call: (Int, Element) -> ())
any	any (call: (Element) -> Bool) -> Bool
all	all (call: (Element) -> Bool) -> Bool
reject	reject (exclude: (Element -> Bool)) -> Array
pop	pop() -> Element
push	push(newElement: Element)
shift	shift() -> Element
unshift	unshift(newElement: Element)
groupBy	groupBy <U> (groupingFunction group: (Element) -> (U)) -> Dictionary<U, Array>
countBy	countBy <U> (groupingFunction group: (Element) -> (U)) -> Dictionary<U, Int>
reduceRight	reduceRight <U>(initial: U, combine: (U, Element) -> U) -> U
implode	implode <C: ExtensibleCollection> (separator: C) -> C?
flatten	flatten <OutType> () -> OutType[]

Class Methods

Name	Signatures
range	range <U: ForwardIndex> (range: Range<U>) -> Array<U>

Operators

Name	Signature	Function
-	- <T: Equatable> (first: Array<T>, second: Array<T>) -> Array<T>	Difference
-	- <T: Equatable> (first: Array<T>, second: T) -> Array<T>	Element removal
&	& <T: Equatable> (first: Array<T>, second: Array<T>) -> Array<T>	Intersection
|	| <T: Equatable> (first: Array, second: Array) -> Array	Union
* Int	* <ItemType> (array: ItemType[], n: Int) -> ItemType[]	Returns a new array built by concatenating int copies of self
* String	* (array: String[], separator: String) -> String	Equivalent to array.implode(String)
[x..y] [x...y]	subscript(range: Range<Int>) -> Array	Returns the sub-array from index x to index y
[x, y, ...]	subscript(first: Int, second: Int, rest: Int...) -> Array	Returns the items at x, y

Int

Examples in the Wiki

Instance Methods

Name	Signatures
times	times <T> (call: (Int) -> T) times <T> (call: () -> T) times (call: () -> ())
isEven	isEven () -> Bool
isOdd	idOdd () -> Bool
upTo	upTo (limit: Int, call: (Int) -> ())
downTo	downTo (limit: Int, call: (Int) -> ())
clamp	clamp (range: Range<Int>) -> Int clamp (min: Int, max: Int) -> Int
isIn	isIn (range: Range<Int>, strict: Bool = false) -> Bool
digits	digits () -> Array<Int>
abs	abs () -> Int
gcd	gcd (n: Int) -> Int
lcm	lcm (n: Int) -> Int

Class Methods

Name	Signatures
random	random(min: Int = 0, max: Int) -> Int

Float

Examples in the Wiki

Instance Methods

Name	Signature
abs	abs () -> Float
sqrt	sqrt () -> Float
digits	digits () -> (integerPart: Int[], fractionalPart: Int[])

Class Methods

Name	Signatures
random	random(min: Float = 0, max: Float) -> Float

String

Examples in the Wiki

Properties

Name
length

Instance Methods

Name	Signature
explode	explode (separator: Character) -> String[]
at	at (indexes: Int...) -> String[]
matches	matches (pattern: String, ignoreCase: Bool = false) -> NSTextCheckingResult[]?
capitalized	capitalized () -> String
insert	insert (index: Int, _ string: String) -> String
ltrimmed	ltrimmed () -> String
rtrimmed	rtrimmed () -> String
trimmed	trimmed () -> String

Class Methods

Name	Signature
random	func random (var length len: Int = 0, charset: String = "...") -> String

Operators

Name	Signature
[x]	subscript(index: Int) -> String?
[x..y] [x...y]	subscript(range: Range<Int>) -> String
[x, y, z]	subscript (indexes: Int...) -> String[]
S * n	* (first: String, second: Int) -> String
=~	=~ (string: String, pattern: String) -> Bool =~ (string: String, options: (pattern: String, ignoreCase: Bool)) -> Bool =~ (strings: String[], pattern: String) -> Bool =~ (strings: String[], options: (pattern: String, ignoreCase: Bool)) -> Bool
|~	|~ (string: String, pattern: String) -> Bool |~ (string: String, options: (pattern: String, ignoreCase: Bool)) -> Bool

Range

Examples in the Wiki

Instance Methods

Name	Signatures
times	times (call: (T) -> ()) times (call: () -> ())
each	each (call: (T) -> ())

Class Methods

Name	Signature
random	random (from: Int, to: Int) -> Range<Int>

Operators

Name	Signature	Function
=	== <U: ForwardIndex> (first: Range<U>, second: Range<U>) -> Bool	Compares 2 ranges

Dictionary

Examples in the Wiki

Instance Methods

Name	Signatures
difference	difference <V: Equatable> (dictionaries: Dictionary<KeyType, V>...) -> Dictionary<KeyType, V>
union	union (dictionaries: Dictionary<KeyType, ValueType>...) -> Dictionary<KeyType, ValueType>
intersection	intersection <K, V where K: Equatable, V: Equatable> (dictionaries: Dictionary<K, V>...) -> Dictionary<K, V>
has	has (key: KeyType) -> Bool
isEmpty	isEmpty () -> Bool
map	map <K, V> (mapFunction map: (KeyType, ValueType) -> (K, V)) -> Dictionary<K, V>
mapValues	mapValues <V> (mapFunction map: (KeyType, ValueType) -> (V)) -> Dictionary<KeyType, V>
each	each(eachFunction each: (KeyType, ValueType) -> ())
filter	filter(testFunction test: (KeyType, ValueType) -> Bool) -> Dictionary<KeyType, ValueType>
merge	merge (dictionaries: Dictionary<KeyType, ValueType>...) -> Dictionary<KeyType, ValueType>
shift	shift () -> (KeyType, ValueType)
groupBy	groupBy <T> (groupingFunction group: (KeyType, ValueType) -> (T)) -> Dictionary<T, Array<ValueType>>
countBy	countBy <T> (groupingFunction group: (KeyType, ValueType) -> (T)) -> Dictionary<T, Int>
any	any (test: (KeyType, ValueType) -> (Bool)) -> Bool
all	all (test: (KeyType, ValueType) -> (Bool)) -> Bool
reduce	reduce <U> (initial: U, combine: (U, Element) -> U) -> U
pick, at	pick (keys: KeyType[]) -> Dictionary pick (keys: KeyType...) -> Dictionary at (keys: KeyType...) -> Dictionary

Operators

Name	Signature	Function
-	- <K, V: Equatable> (first: Dictionary<K, V>, second: Dictionary<K, V>) -> Dictionary<K, V>	Difference
&	& <K, V: Equatable> (first: Dictionary<K, V>, second: Dictionary<K, V>) -> Dictionary<K, V>	Intersection
|	| <K, V: Equatable> (first: Dictionary<K, V>, second: Dictionary<K, V>) -> Dictionary<K, V>	Union

NSArray

Examples in the Wiki

Instance Methods

Name	Signatures
cast	cast <OutType> () -> OutType[]
flatten	flatten <OutType> () -> OutType[]

Utilities

Examples in the Wiki

Class Methods

Name	Signatures
after	after <P, T> (n: Int, call: P -> T) -> (P -> T?) func after <T> (n: Int, call: () -> T) -> (() -> T?)
once	once <P, T> (call: P -> T) -> (P -> T?) once <T> (n: Int, call: () -> T) -> (() -> T?)
partial	partial <P, T> (function: (P...) -> T, _ parameters: P...) -> ((P...) -> T?)
bind	bind <P, T> (function: (P...) -> T, _ parameters: P...) -> (() -> T)

To Do

• Wiki
• Xcode project for both iOS & OS X
• Review code comments
• Example project
• Installation instructions
• Benchmark
• ...