Document non-deprecated way of creating promises

Author: raboof

ja/overviews/core/futures.md

@@ -571,7 +571,7 @@ Promise の `p` は `p.future` によって返される Future を完了させ
     import scala.concurrent.{ future, promise }
     import scala.concurrent.ExecutionContext.Implicits.global
 
-    val p = promise[T]
+    val p = Promise[T]()
     val f = p.future
 
     val producer = future {
@@ -599,7 +599,7 @@ Promise の `p` は `p.future` によって返される Future を完了させ
 
 以下は Promise を失敗させる具体例だ。
 
-    val p = promise[T]
+    val p = Promise[T]()
     val f = p.future
 
     val producer = future {
@@ -640,7 +640,7 @@ HTTP レスポンスにのみ興味がある場合で、これは最初に Promi
 以下のプログラムは `1` と表示する:
 
     val f = future { 1 }
-    val p = promise[Int]
+    val p = Promise[Int]()
 
     p completeWith f
 
@@ -662,7 +662,7 @@ Promise、Future の `onComplete` メソッド、そして `future`
 以下のように書くことができる:
 
     def first[T](f: Future[T], g: Future[T]): Future[T] = {
-      val p = promise[T]
+      val p = Promise[T]()
 
       f onSuccess {
         case x => p.tryComplete(x)

overviews/core/_posts/2012-09-20-futures.md

@@ -890,7 +890,7 @@ that value. This passing of the value is done using a promise.
     import scala.concurrent.{ future, promise }
     import scala.concurrent.ExecutionContext.Implicits.global
 
-    val p = promise[T]
+    val p = Promise[T]()
     val f = p.future
 
     val producer = Future {
@@ -922,7 +922,7 @@ promise that has already been completed (or failed) will throw an
 
 The following example shows how to fail a promise.
 
-    val p = promise[T]
+    val p = Promise[T]()
     val f = p.future
 
     val producer = Future {
@@ -971,7 +971,7 @@ future. After the future is completed, the promise gets completed with
 the result of that future as well. The following program prints `1`:
 
     val f = Future { 1 }
-    val p = promise[Int]
+    val p = Promise[Int]()
 
     p completeWith f
 

sips/completed/_posts/2012-01-21-futures-promises.md

@@ -556,7 +556,7 @@ Consider the following producer-consumer example:
 
     import scala.concurrent.{ future, promise }
 
-    val p = promise[T]
+    val p = Promise[T]()
     val f = p.future
 
     val producer = future {
@@ -588,7 +588,7 @@ promise that has already been completed (or failed) will throw an
 
 The following example shows how to fail a promise. 
 
-    val p = promise[T]
+    val p = Promise[T]()
     val f = p.future
 
     val producer = future {
@@ -637,7 +637,7 @@ future. After the future is completed, the promise gets completed with
 the result of that future as well. The following program prints `1`:
 
     val f = future { 1 }
-    val p = promise[Int]
+    val p = Promise[Int]()
 
     p completeWith f