buffer: add .from(), .alloc() and .allocUnsafe()

Several changes:

* Soft-Deprecate Buffer() constructors
* Add `Buffer.from()`, `Buffer.alloc()`, and `Buffer.allocUnsafe()`
* Add `--zero-fill-buffers` command line option
* Add byteOffset and length to `new Buffer(arrayBuffer)` constructor
* buffer.fill('') previously had no effect, now zero-fills
* Update the docs

PR-URL: https://github.com/nodejs/node/pull/4682
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/test/parallel/test-http-res-write-end-dont-take-array.js b/test/parallel/test-http-res-write-end-dont-take-array.js
index 0befd951f0..6aff0661df 100644
--- a/test/parallel/test-http-res-write-end-dont-take-array.js
+++ b/test/parallel/test-http-res-write-end-dont-take-array.js
@@ -11,7 +11,7 @@ var server = http.createServer(function(req, res) {
     // write should accept string
     res.write('string');
     // write should accept buffer
-    res.write(new Buffer('asdf'));
+    res.write(Buffer.from('asdf'));
 
     // write should not accept an Array
     assert.throws(function() {
@@ -27,7 +27,7 @@ var server = http.createServer(function(req, res) {
     res.end('string');
   } else if (test === 2) {
     // end should accept Buffer
-    res.end(new Buffer('asdf'));
+    res.end(Buffer.from('asdf'));
   }
 });