в 09:19, 26 мая 2010

2010-05-26T09:19:13Z

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2010-05-26T08:15:08Z

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==Arithmetic Operators in Actionscript==



<source lang="java">

Operator Name Example
+ Plus x + y
- Minus/Negation x - y
* Multiply x*y
/ Divide x/y
% Modulo x%y
package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var nYear:Number = 2004;
trace(nYear % 4); // Displays: 0

}
}
}
</source>

==Assignment Operators==



<source lang="java">

Operator Name Example What It Means
= Equals (assignment) x = y x = y
+= Add by value x += y x = x + y
-= Subtract by value x -= y x = x - y
*= Multiply by value x *= y x = x * y
/= Divide by value x /= y x = x / y
%= Modulo by value x %= y x = x % y
<<= Left shift by value x <<= y x = x << y
>>= Right shift by value x >>= y x = x >> y
>>>= Right shift zero fill by value x >>>= y x = x >>> y
&= Bitwise AND by value x &= y x = x & y
|= Bitwise OR by value x |= y x = x | y
^= Bitwise XOR by value x ^= y x = x ^ y
</source>

==Compound Assignment Operators (+=, -=, *=, /=, and %=): x += 1; is the same as writing x ===



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var x:Number = 0;

x += 5; // x = 5
trace(x);

x -= 3; // x = 2
trace(x);
x *= 3; // x = 6
trace(x);
x /= 2; // x = 3
trace(x);
x %= 3; // x = 0
trace(x);
}
}
}
</source>

==Increment (++) and Decrement ( -- )==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var x:Number = 5;
x++; // 6
trace(x);

x--; // 5
trace(x);
}
}
}
</source>

==Modulo (%)==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var a:int = 9;
var b:int = 3;

trace(a%b);
}
}
}
</source>

==myVariable *= 6; is the same as: myVariable = myVariable * 6;==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var myVariable:Number = 6;

myVariable *= 6;
trace(myVariable);

myVariable = myVariable * 6;

trace(myVariable);

}
}
}
</source>

==myVariable += 6; is the shorthand version of the following: myVariable = myVariable + 6;==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var myVariable:Number = 6;

myVariable = myVariable + 6;
trace(myVariable); //12

myVariable += 6;

trace(myVariable); //18
}
}
}
</source>

==Using Mathematical Operators: prefix and postfix==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var quantity:Number = 5;
trace(quantity++); // Displays: 5
trace(quantity); // Displays: 6

var quantity:Number = 5;
trace(++quantity); // Displays: 6
trace(quantity); // Displays: 6
}
}
}
</source>

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Flash / Flex / ActionScript/Language/Arithmetic Operators - История изменений

в 09:19, 26 мая 2010

Admin: 1 версия