https://github.com/nghialv/try

Swift µframework providing Try<T>
https://github.com/nghialv/try

Last synced: 4 months ago
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Swift µframework providing Try<T>

• Host: GitHub
• URL: https://github.com/nghialv/try
• Owner: nghialv
• License: mit
• Created: 2015-06-10T19:03:00.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-09-16T16:51:13.000Z (over 9 years ago)
• Last Synced: 2024-10-03T12:39:57.205Z (5 months ago)
• Language: Swift
• Homepage:
• Size: 189 KB
• Stars: 32
• Watchers: 4
• Forks: 4
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
Try

=====

[![Language](http://img.shields.io/badge/language-swift-brightgreen.svg?style=flat

)](https://developer.apple.com/swift)

[![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)]

(https://github.com/Carthage/Carthage)

[![License](http://img.shields.io/badge/license-MIT-lightgrey.svg?style=flat

)](http://mit-license.org)

[![Issues](https://img.shields.io/github/issues/nghialv/Try.svg?style=flat

)](https://github.com/nghialv/Try/issues?state=open)

Swift µframework providing Try<T>.

This library is inspired by the `Try` implementation in Scala.

##### Without `Try`

``` swift

enum FileError: ErrorType {

	case FileNotFound

	case Unknown

}

	

func lineCountOfFile(filename: String) throws -> Int {

	if exists(filename) {

		let file = open(filename)

		return file.lineCount

	} else {

		throw FileError.FileNotFound

	}

}

	

// traditional way with Swift 2.0

do {

	let lineCount = try lineCountOfFile("data.text")

	// do something

} catch {

	// error handling

}

 

```

##### Code with `Try`

``` swift

let t = Try(try lineCountOfFile("data.text"))

switch t {

 	case .Success(let lines): print(lines)

	case .Failure(let error): print(error)

}

```

- `map` `<^>`

```swift

let t = Try(try lineCountOfFile("data.text")).map { $0 * 5 }

switch t {

	case .Success(let lines): print(lines)

	case .Failure(let error): print(error)

}

```

- `flatMap` `>>-`

```swift

let t = Try(try lineCountOfFile("data.text")).flapMap { Try(try doSomething($0)) }

switch t {

 	case .Success(let lines): print(lines)

	case .Failure(let error): print(error)

}

```

- Operators

``` swift

let t = Try(try lineCountOfFile("data.text")) <^> { $0 * 5} >>- { Try(try doSomething($0)) }

switch t {

	case .Success(let lines): print(lines)

	case .Failure(let error): print(error)

}

```

Installation

-----

- Using Carthage

>	- Insert `github "nghialv/Try"` to your Cartfile

>	- Run `carthage update`

- Using Cocoapods

>	- Insert `use_frameworks!` to your Podfile

>	- Insert `pod "Try"` to your Podfile

>	- Run `pod install`

- Using Submodule

Requirements

-----

- Swift 2.0 (Xcode 7.0 or later)

- iOS 8.0 or later