var str:String = "this is a string with some spaces that need replacing with _"
str = str.split(" ").join("_");
// simple :)
									

cd to the root directory then run the following…

rm -rf `find . -type d -name .svn`

make sure to use the ` character. all .svn directories are now gone

package
{
  public class EmbedJsonTest extends Sprite
  {
    [Embed(source="data.json",mimeType="application/octet-stream")]
    private const JsonData : Class;

    public function EmbedJsonTest()
    {
      var ba : ByteArray = new JsonData() as ByteArray;

      trace("JsonData = " + ba.readUTFBytes(ba.length));
    }
  }
}
									

var filePath : String = this.loaderInfo.url;
var lastIndex : int = filePath.lastIndexOf("/");
trace(filePath.substr(0, lastIndex + 1));
									

but this will only work once the DisplayObject is added to the stage so you can’t put it in the constructor. you need to add an ADDED_TO_STAGE event listener then run it inside an init function.

var camera : Camera = Camera.getCamera();
camera.setQuality(0, 90);
camera.setMode(720, 576, 25);

if (camera != null)
{
  video = new Video(720, 576);
  video.attachCamera(camera);
  addChild(video);
}
else
{
  trace("go buy a camera");
}
									

but if the user navigates to another part of your app and you don’t remove the camera object it will continue to run and use a whole lot of cpu. removing it’s pretty easy too but also easy to forget..

video.attachCamera(null);
video.clear();
removeChild(_video);

camera = null;
									

the key part there is video.attachCamera(null); that’s the part that will turn off the little light next to your notebook’s camera

var obj : Object = {uid:15, title:"hello"};
var jsonObj : String = JSON.encode(obj);
trace(jsonObj);
									

the JSON class here is part of a useful library of as3 utility class files from mike chambers available here..

https://github.com/mikechambers/as3corelib

another very useful one that’s part of this collection is a JPG encoder that takes a BitmapData object and returns a ByteArray that can then be sent to a server with AMF.

var box : Sprite = new Sprite();
box.graphics.beginFill(0x009900);
box.graphics.drawRect(0, 0, 50, 50);
box.graphics.endFill();
addChild(box);

box.cacheAsBitmapMatrix = box.transform.concatenatedMatrix;
box.cacheAsBitmap = true;

// now move, scale, rotate and change the alpha of box much more efficiently on mobile devices
									

note: cacheAsBitmap and cacheAsBitmapMatrix are only for displayObjects that do not have nested animation. this will require flash player to redraw on each frame the contents on the displayObject that changed

var bmd : BitmapData;
// some other code here

 bmd.lock();

for(var i : uint = 0; i < 20; i++)
{
    // multiple calls to bmd.copyPixels
}

 bmd.unlock();

// bit faster
									

that’s the most important thing to know. before doing this i was wondering why the performance using blitting wasn’t any better than standard rendering.

// Bitmap(BitmapData, pixelsnapping, smoothing)
var bm : Bitmap = new Bitmap(bmd, "auto", true);
									

but what confused me is if i then draw something to the BitmapData property, smoothing gets set to false.

bm.bitmapData.draw(someDisplayObj);
// now smoothing for the Bitmap is set back to the default false. so..

bm.smoothing = true;
									

easy enough to fix

http://www.funky-monkey.nl/blog/2010/09/29/using-ftp-with-ant-and-fdt/

that worked well but the server i’m working with at the moment is SFTP (SSH File Transfer Protocol) and it didn’t work. so after a bit more searching around i found how it’s done. before reading on go over the content at the link above then download this .jar file and copy it to..

FDT/plugins/org.apache.ant_1.7.1v20100518-1145/lib/

and add it to the Ant Home Entries Classpath as described in the above tutorial

then instead of using the FTP tag in ANT use SCP like this..

<scp remoteTodir="username@yourwebsite.com:/home/username/public_html" password="pword" trust="yes" sftp="true" port="22">
  <fileset dir="../bin">
    <include name="main.swf" />
    <include name="index.html />
  </fileset>
</scp>
									

info on SCP can be found here..

http://ant.apache.org/manual/Tasks/scp.html

hope this helps