Flash / Flex / ActionScript/Data Type/null
Checking for Null Values
<source lang="java">
package{
import flash.display.Sprite; public class Main extends Sprite{ public function Main(){ var weather:String = "rain"; if (weather != null) { trace("checkWeather"); } if (weather) { trace("checkWeather"); } } }
}
</source>
Convert null to string
<source lang="java">
package{
import flash.display.Sprite; public class Main extends Sprite{ public function Main(){ trace(null); // null } }
}
</source>
If statement ladder
<source lang="java">
package{
import flash.display.Sprite; public class Main extends Sprite{ public function Main(){ var weather:String = "rain"; if (weather == "rain") { trace("bringUmbrella"); } else if (weather == "snow"){ trace("bringCoat"); } else if (weather == "sun") { trace("bringSunscreen"); } } }
}
</source>