в 09:19, 26 мая 2010

2010-05-26T09:19:12Z

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2010-05-26T08:14:42Z

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==Iterate through the key-value pairs of an object with the for..in and for each..in loops.==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var notes:Object = {t: 2, g: 14, s: 9};
for (var name:String in notes)
{
trace("Notes on " + name + ": " + notes[name]);
}
}
}
}
</source>

==Using an Object as a Lookup Key with Dictionaries==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*
public class Main extends Sprite{
public function Main(){
var notes:Dictionary = new Dictionary();
var city:String = "New York City";
var currentConditions:String = "light showers";
var currentTemp:Number = 56;

notes[city] = "Central Park";
notes[currentTemp] = "20";
notes[currentConditions] = "70% chance of precipitation";

trace("Current Weather for", city, notes[city]);
trace("Current Temperature :", currentTemp, "degrees", notes[currentTemp]);
trace("Current Conditions :", currentConditions, "(", notes[currentConditions],")");
}
}
}
</source>

==When using delete on an item in an Array, the length property is not updated.==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var pastas:Object = {t: 2, g: 14, s: 9};
trace(pastas.length); // Displays 9
delete pastas["s"];
trace(pastas.length); // Displays undefined
}
}
}
</source>

==Working with Associative Arrays==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var lotto:Array = new Array(12, 30, 42, 6, 29, 75);
lotto.description = "This week"s lotto picks.";
trace(lotto[3]); // Displays: 6
trace(lotto["description"]); // Displays: This week"s lotto picks.
}
}
}
</source>

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Flash / Flex / ActionScript/Array/Dictionary - История изменений

в 09:19, 26 мая 2010

Admin: 1 версия