Validation 2.0.0

Validation 2.0.0

LangLanguage SwiftSwift
License MIT
ReleasedLast Release Oct 2017
SwiftSwift Version 4.0
SPMSupports SPM

Maintained by Elvis Nuñez.

A simple type to perform validations on Strings.

struct Validation {
    var minimumLength = 0
    var maximumLength: Int?
    var maximumValue: Double?
    var minimumValue: Double?
    var characterSet: CharacterSet?
    var format: String?


Making complete false will cause minimumLength, minimumValue and format to be ignored this is useful for partial validations, or validations where the final string is in process of been completed. For example when entering characters into an UITextField. With complete true all validations will be run.

func validateString(string: String, complete: Bool = true) -> Bool


Maximum or/and minimum length

var validation = Validation()
validation.minimumLength = 5
validation.maximumLength = 6

validation.validateString("1234") // => returns false
validation.validateString("12345") // => returns true
validation.validateString("1234567") // => returns false

Minimum or/and maximum value

var validation = Validation()
validation.minimumValue = 5
validation.maximumValue = 6

validation.validateString("4") // => returns false
validation.validateString("5") // => returns true
validation.validateString("7") // => returns false


var validation = Validation()
validation.characterSet = NSCharacterSet.decimalDigitCharacterSet()

validation.validateString("23213") // => returns true
validation.validateString("hi there") // => returns false

Format (regex)

var validation = Validation()
validation.format = "[\\w._%+-]+@[\\w.-]+\\.\\w{2,}"

validation.validateString("[email protected]") // => returns true
validation.validateString("") // => returns false
validation.validateString("hi there [email protected]") // => returns false


Validation is available through CocoaPods. To install
it, simply add the following line to your Podfile:

pod 'Validation'


Validation is available under the MIT license. See the LICENSE file for more info.


Elvis Nuñez, @3lvis