shorter Chan buffer init

Author: tidwall

GoSwift/go.swift

@@ -146,7 +146,10 @@ public class Chan<T> : ChanAny {
     private var closed = false
 
     convenience init(){
-        self.init(buffer: 0)
+        self.init(0)
+    }
+    init(_ buffer: Int){
+        cap = buffer
     }
     init(buffer: Int){
         cap = buffer

README.md

@@ -60,7 +60,7 @@ func main() {
 
 ```swift
 func main() {
-	var jobs = Chan<Int>(buffer: 5)
+	var jobs = Chan<Int>(5)
 	var done = Chan<Bool>()
 
 	go {

examples/channel-buffering.swift

@@ -13,7 +13,7 @@ func main() {
 
 	// Here we `make` a channel of strings buffering up to
 	// 2 values.
-	var messages = Chan<String>(buffer: 2)
+	var messages = Chan<String>(2)
 
 	// Because this channel is buffered, we can send these
 	// values into the channel without a corresponding

examples/channel-synchronization.swift

@@ -22,7 +22,7 @@ func main() {
 
 	// Start a worker goroutine, giving it the channel to
 	// notify on.
-	var done = Chan<Bool>(buffer: 1)
+	var done = Chan<Bool>(1)
 	go { worker(done) }
 
 	// Block until we receive a notification from the

examples/closing-channels.swift

@@ -11,7 +11,7 @@
 // to a worker goroutine. When we have no more jobs for
 // the worker we'll `close` the `jobs` channel.
 func main() {
-	var jobs = Chan<Int>(buffer: 5)
+	var jobs = Chan<Int>(5)
 	var done = Chan<Bool>()
 
 	// Here's the worker goroutine. It repeatedly receives