diff --git a/README.md b/README.md
index 800cce9..eca23b7 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,23 @@ for line in open(filename).lines() {
 }
 ```
 
+#### List all executables in PATH
+
+```swift
+let directories = environment["PATH"]!.split(":")
+for directory in directories {
+	run("find \"\(directory)\" -type f -perm +ugo+x -print") |> standardoutput
+}
+```
+
+or in a Functional Programming style:
+
+```swift
+environment["PATH"]! |> split(":") 
+	|> map { dir in run("find \"\(dir)\" -type f -perm +ugo+x -print") } 
+	|> standardoutput
+```
+
 #### Print standard input with line numbers
 
 ```swift
@@ -42,15 +59,6 @@ for line in standardinput.lines() {
 
 Launch with e.g. `ls | print_linenumbers.swift`
 
-#### List all executables in PATH
-
-```swift
-let directories = environment["PATH"]!.split(":")
-for directory in directories {
-	run("find \"\(directory)\" -type f -perm +ugo+x -print") |> standardoutput
-}
-```
-
 ## Installation
 
 - In the Terminal, go to where you want to download SwiftShell.
diff --git a/SwiftShell/Stream.swift b/SwiftShell/Stream.swift
index e597a2a..9930ffb 100644
--- a/SwiftShell/Stream.swift
+++ b/SwiftShell/Stream.swift
@@ -163,16 +163,19 @@ public func |> (lhs: ReadableStreamType, rhs: WriteableStreamType) {
 	}
 }
 
-/**
-Writes something Printable to a writable stream.
-*/
+/** Writes something Printable to a writable stream. */
 public func |> (lhs: Printable, rhs: WriteableStreamType) {
 	rhs.write(lhs.description)
 }
 
-/**
-Writes a String to a writable stream.
-*/
+/** Writes a String to a writable stream. */
 public func |> (lhs: String, rhs: WriteableStreamType) {
 	rhs.write(lhs)
 }
+
+/** Writes a sequence of streams to another stream. */
+public func |> <S : SequenceType where S.Generator.Element == ReadableStreamType>(lhs: S, rhs: WriteableStreamType) {
+	for stream in lhs {
+		stream |> rhs
+	}
+}
diff --git a/SwiftShellTests/Scripts/listallexecutablesinpath.swift b/SwiftShellTests/Scripts/listallexecutablesinpath.swift
index a1126bb..4608647 100755
--- a/SwiftShellTests/Scripts/listallexecutablesinpath.swift
+++ b/SwiftShellTests/Scripts/listallexecutablesinpath.swift
@@ -2,8 +2,14 @@
 
 import SwiftShell
 
+/*
 let directories = environment["PATH"]!.split(":")
 
 for directory in directories {
 	run("find \"\(directory)\" -type f -perm +ugo+x -print") |> standardoutput
 }
+*/
+
+environment["PATH"]! |> split(":") 
+	|> map { directory in run("find \"\(directory)\" -type f -perm +ugo+x -print") } 
+	|> standardoutput