Flash / Flex / ActionScript/Array/Array Dimension
Содержание
- 1 Compose dynamic properties
- 2 Create an associative array by adding properties to object
- 3 Create a single array in which each element is a string containing both pieces of data, separated by a delimiter such as a colon (:)
- 4 Creating an Associative Array
- 5 Multidimensional Arrays
- 6 Reading Elements of an Associative Array
- 7 Storing Complex or Multidimensional Data
- 8 The idea behind parallel arrays is to create two (or more) arrays in which the elements with the same indices are related.
- 9 Two ways to add properties to dynamic object
- 10 Use nested for loop to deal with multiple sets of data
- 11 With multidimensional arrays, concat( ) or slice( ) only duplicates the top level of the array
- 12 Working with Multidimensional Arrays
- 13 Working with multiple sets of data: create a multidimensional array
- 14 Working with Single-Dimension Arrays
- 15 You can specify the properties of the object in any order you like
Compose dynamic properties
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var members:Object = new Object();
members.c1 = "B";
members.c2 = "D";
members.c3 = "V";
for (var i:int = 1; i <= 3; i++) {
trace(members["c" + i]);
}
}
}
}
</source>
Create an associative array by adding properties to object
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var members:Object = new Object( );
members.s = "F";
members.c = "G";
members.t = "S";
trace(members.t);
}
}
}
</source>
Create a single array in which each element is a string containing both pieces of data, separated by a delimiter such as a colon (:)
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var aEmployees:Array = new Array();
aEmployees.push("A:555-1234");
aEmployees.push("P:555-4321");
aEmployees.push("C:555-5678");
aEmployees.push("H:555-8765");
var aTempEmployeeInfo:Array = null;
for(var i:Number = 0; i < aEmployees.length; i++) {
aTempEmployeeInfo = aEmployees[i].split(":");
trace("Employee:" + aTempEmployeeInfo[0]);
trace("Phone Number:" + aTempEmployeeInfo[1]);
}
}
}
} Employee:A Phone Number:555-1234 Employee:P Phone Number:555-4321 Employee:C Phone Number:555-5678 Employee:H Phone Number:555-8765
</source>
Creating an Associative Array
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var members:Object = {s: "F",
c: "G",
t: "S"};
trace(members);
}
}
}
</source>
Multidimensional Arrays
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var row1:Array = [6, 2.99]; // Quantity 6, Price 2.99
var row2:Array = [4, 9.99]; // Quantity 4, Price 9.99
var row3:Array = [1, 59.99]; // Quantity 1, Price 59.99
var spreadsheet:Array = [row1, row2, row3];
for (var i:int = 0; i < spreadsheet.length; i++) {
trace(spreadsheet[i][0]);
}
}
}
}
</source>
Reading Elements of an Associative Array
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var members:Object = new Object( );
members.s= "F";
members.c= "G";
members.t= "S";
for (var sRole:String in members) {
trace(sRole + ": " + members[sRole]);
}
}
}
}
</source>
Storing Complex or Multidimensional Data
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var colors:Array = ["red", "blue", "blue", "gray"];
var years:Array = [1997, 2000, 1985, 1983];
var makes:Array = ["H", "C", "M", "F"];
for (var i:int = 0; i < makes.length; i++) {
trace("A " + colors[i] + " " +
years[i] + " " +
makes[i]);
}
}
}
} A red 1997 H A blue 2000 C A blue 1985 M A gray 1983 F
</source>
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var aEmployeeNames:Array = ["A", "P", "C", "H"];
var aEmployeePhone:Array = ["555-1234", "555-4321", "555-5678", "555-8765"];
for(var i:Number = 0; i < aEmployeeNames.length; i++) {
trace("Employee:" + aEmployeeNames[i]);
trace("Phone Number:" + aEmployeePhone[i]);
}
}
}
} Employee:A Phone Number:555-1234 Employee:P Phone Number:555-4321 Employee:C Phone Number:555-5678 Employee:H Phone Number:555-8765
</source>
Two ways to add properties to dynamic object
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var members:Object = new Object( );
members["c"] = "R";
trace(members.c);
members.c = "a";
trace(members["c"]);
}
}
}
</source>
Use nested for loop to deal with multiple sets of data
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var cars:Array = new Array();
cars.push(["maroon", 1997, "H"]);
cars.push(["beige", 2000, "Chrysler"]);
cars.push(["blue", 1985, "Mercedes"]);
cars.push(["gray", 1983, "Fiat"]);
for (var i:int = 0; i < cars.length; i++) {
for (var j:int = 0; j < cars[i].length; j++) {
trace("Element [" + i + "][" + j + "] contains: " +
cars[i][j]);
}
}
}
}
} Element [0][0] contains: maroon Element [0][1] contains: 1997 Element [0][2] contains: H Element [1][0] contains: beige Element [1][1] contains: 2000 Element [1][2] contains: Chrysler Element [2][0] contains: blue Element [2][1] contains: 1985 Element [2][2] contains: Mercedes Element [3][0] contains: gray Element [3][1] contains: 1983 Element [3][2] contains: Fiat
</source>
With multidimensional arrays, concat( ) or slice( ) only duplicates the top level of the array
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var coordinates:Array = new Array( );
coordinates.push([0,1,2,3]);
coordinates.push([4,5,6,7]);
coordinates.push([8,9,10,11]);
coordinates.push([12,13,14,15]);
var coordinatesDuplicate:Array = coordinates.concat( );
coordinatesDuplicate[0][0] = 20;
trace(coordinates[0][0]); // Displays: 20
coordinatesDuplicate[1] = [21,22,23,24];
trace(coordinates[1]); // Displays: 4,5,6,7
}
}
} 20 4,5,6,7
</source>
Working with Multidimensional Arrays
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var aEmployees:Array = new Array();
aEmployees.push(["A", "555-1234"]);
aEmployees.push(["P", "555-4321"]);
aEmployees.push(["C", "555-5678"]);
aEmployees.push(["H", "555-8765"]);
for(var i:Number = 0; i < aEmployees.length; i++) {
trace("Employee:" + aEmployees[i][0]);
trace("Phone Number:" + aEmployees[i][1]);
}
}
}
} Employee:A Phone Number:555-1234 Employee:P Phone Number:555-4321 Employee:C Phone Number:555-5678 Employee:H Phone Number:555-8765
</source>
Working with multiple sets of data: create a multidimensional array
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var cars:Array = new Array();
cars.push(["maroon", 1997, "H"]);
cars.push(["beige", 2000, "Chrysler"]);
cars.push(["blue", 1985, "Mercedes"]);
cars.push(["gray", 1983, "Fiat"]);
for (var i:int = 0; i < cars.length; i++) {
trace("A " + cars[i][0] + " " +
cars[i][1] + " " +
cars[i][2]);
}
}
}
} A maroon 1997 H A beige 2000 Chrysler A blue 1985 Mercedes A gray 1983 Fiat
</source>
Working with Single-Dimension Arrays
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var aLetters:Array = ["a", "b", "c"];
var aNoLetters:Array = new Array();
var aMoreLetters:Array = new Array("d", "e", "f");
}
}
}
</source>
You can specify the properties of the object in any order you like
<source lang="java">
package{
import flash.display.Sprite;
public class Main extends Sprite{
public function Main(){
var cars:Array = new Array();
cars.push({make: "H", year: 1997, color: "maroon"});
cars.push({make: "Chrysler", year: 2000, color: "beige"});
cars.push({make: "Mercedes", year: 1985, color: "blue"});
cars.push({make: "Fiat", year: 1983, color: "gray"});
for (var i:int = 0; i < cars.length; i++) {
trace("A " + cars[i].color + " " +
cars[i].year + " " +
cars[i].make);
}
}
}
} A maroon 1997 H A beige 2000 Chrysler A blue 1985 Mercedes A gray 1983 Fiat
</source>
