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# GoSwift - Go Goodies for Swift

Bring some of the more powerful features of Go to your iOS / Swift project such as channels, goroutines, and defers.

##Features

• Goroutines
• Defer
• Panic, Recover
• Channels
  • Buffered Channels
  • Select, Case, Default
  • Closing
• Sync Package
  • Mutex, Cond, Once, WaitGroup
• Error type

##Example

Note that the following example and all of the examples in the examples directory originated from http://gobyexample.com and Mark McGranaghan

Go

package main

import "fmt"

func main() {
	jobs := make(chan int, 5)
	done := make(chan bool)

	go func() {
		for {
			j, more := <-jobs
			if more {
				fmt.Println("received job", j)
			} else {
				fmt.Println("received all jobs")
				done <- true
				return
			}
		}
	}()

	for j := 1; j <= 3; j++ {
		jobs <- j
		fmt.Println("sent job", j)
	}
	close(jobs)
	fmt.Println("sent all jobs")

	<-done
}

Swift

func main() {
	var jobs = Chan<Int>(buffer: 5)
	var done = Chan<Bool>()

	go {
		for ;; {
			var (j, more) = <?jobs
			if more {
				println("received job \(j!)")
			} else {
				println("received all jobs")
				done <- true
				return
			}
		}
	}

	for var j = 1; j <= 3; j++ {
		jobs <- j
		println("sent job \(j)")
	}
	close(jobs)
	println("sent all jobs")

	<-done
}

###Run an Example

Each example has a .swift and .go file that contain the same logic.

./run.sh examples/goroutines.swift
./run.sh examples/goroutines.go

##Installation (iOS and OS X)

Add the following to your Cartfile:

github "tidwall/GoSwift"

Then run carthage update.

Follow the current instructions in Carthage's README for up to date installation instructions.

The import GoSwift directive is required in order to access GoSwift features.

Add the following to your Podfile:

use_frameworks!
pod 'GoSwift'

Then run pod install with CocoaPods 0.36 or newer.

The import GoSwift directive is required in order to access GoSwift features.

###Manually

Copy the GoSwift\go.swift file into your project.

There is no need for import GoSwift when manually installing.

Josh Baker @tidwall

The GoSwift source code available under the MIT License.

The Go source code in the examples directory is copyright Mark McGranaghan and licensed under a Creative Commons Attribution 3.0 Unported License.

The Swift version of the example code is by Josh Baker