Archive for November, 2007

Description Operator (Professional web hosting) (bitwise); converts expression1 and expression2 to

Monday, November 26th, 2007

Description Operator (bitwise); converts expression1 and expression2 to 32-bit unsigned integers, and returns a 1 in each bit position where the corresponding bits in expression1 or expression1, but not both, are 1. Example The following example uses the bitwise XOR operator on the decimals 15 and 9 and assigns the result to the variable x. // 15 decimal = 1111 binary // 9 decimal = 1001 binary x = 15 ^ 9 trace(x) // 1111 ^ 1001 = 0110 // returns 6 decimal( = 0110 binary) ^= (bitwise XOR assignment) Availability Flash Player 5. Usage expression1 ^= expression2 Parameters expression1,expression2 Integers and variables. Returns None. Description Operator (bitwise compound assignment); assigns expression1 the value of expression1 ^ expression2. For example, the following two statements are the same: x ^= y x = x ^ y Example The following is an example of a ^= operation. // 15 decimal = 1111 binary x = 15; // 9 decimal = 1001 binary y = 9; trace(x ^= y); //returns 6 decimal ( = 0110 binary) See also ^ (bitwise XOR) ^= (bitwise XOR assignment) 247
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Usage 1 and 2: The following (Web hosting top) example creates

Sunday, November 25th, 2007

Usage 1 and 2: The following example creates an array called employee_array and uses the trace() action to send the elements to the Output panel. In the fourth line, an element in the array is changed and the fifth line sends the newly modified array to the Output panel: employee_array = [”Barbara”, “George”, “Mary”]; trace(employee_array); // Barbara, George, Mary employee_array[2]=”Sam”; trace(employee_array); // Barbara, George, Sam Usage 3: In the following example, the expression inside the brackets (”piece” + i) is evaluated and the result is used as the name of the variable to be retrieved from the my_mc movie clip. In this example, the variable i must live on the same Timeline as the button. If the variable i is equal to 5, for example, the value of the variable piece5 in the my_mc movie clip will be displayed in the Output panel: on(release){ x = my_mc[”piece”+i]; trace(x); } Usage 3: In the following code, the expression inside the brackets is evaluated and the result is used as the name of the variable to be retrieved from movie clip name_mc: name_mc[”A” + i]; If you are familiar with the Flash 4 ActionScript slash syntax, you can use the eval function to accomplish the same result: eval(”name.A” & i); Usage 3: You can also use the array access operator on the left side of an assignment statement to dynamically set instance, variable, and object names: name[index] = “Gary”; See also Array class, Object class, eval() ^ (bitwise XOR) Availability Flash Player 5. Usage expression1 ^ expression2 Parameters expression1,expression2 A number. Returns None. 246 Chapter 12: ActionScript Dictionary
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Web hosting companies - Returns Nothing. Description Operator; initializes a new array

Saturday, November 24th, 2007

Returns Nothing. Description Operator; initializes a new array or multidimensional array with the specified elements (a0, and so on), or accesses elements in an array. The array access operator lets you dynamically set and retrieve instance, variable, and object names. It also lets you access object properties. Usage 1: An array is an object whose properties are called elements, which are each identified by a number called an index. When you create an array, you surround the elements with the array access operator (or brackets). An array can contain elements of various types. For example, the following array, called employee, has three elements; the first is a number and the second two are strings (inside quotation marks). employee = [15, “Barbara”, “Erick”]; Usage 2: You can nest brackets to simulate multidimensional arrays. The following code creates an array called ticTacToe with three elements; each element is also an array with three elements. ticTacToe = [[1,2,3],[4,5,6],[7,8,9]]; // choose Debug > List Variables in test movie mode // to see a list of the array elements Usage 3: Surround the index of each element with brackets to access it directly; you can add a new element to an array, change or retrieve the value of an existing element. The first element in an array is always 0: my_array[0] = 15; my_array[1] = “Hello”; my_array[2] = true; You can use brackets to add a fourth element, as in the following: my_array[3] = “George”; Usage 4: You can use brackets to access an element in a multidimensional array. The first set of brackets identifies the element in the original array, and the second set identifies the element in the nested array. The following line of code sends the number 6 to the Output panel. ticTacToe = [[1,2,3],[4,5,6],[7,8,9]]; trace(ticTacToe[1][2]); // returns 6 Usage 5: You can use the array access operator instead of the eval function to dynamically set and retrieve values for movie clip names or any property of an object: name[”mc” + i] = “left_corner”; Example Usage 1: The following code samples show two different ways of creating a new empty Array object; the first line uses brackets. my_array =[]; my_array = new Array(); [] (array access) 245
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/= (division assignment) Availability Flash Player 4. Usage

Saturday, November 24th, 2007

/= (division assignment) Availability Flash Player 4. Usage expression1 /= expression2 Parameters expression1,expression2 A number or a variable that evaluates to a number. Returns Nothing. Description Operator (arithmetic compound assignment); assigns expression1 the value of expression1 / expression2. For example, the following two statements are the same: x /= y x = x / y Example The following code illustrates using the /= operator with variables and numbers. x = 10; y = 2; x /= y; // x now contains the value 5 [] (array access) Availability Flash Player 4. Usage my_array = [”a0″, a1,…aN] myMultiDimensional_array = [[”a0″,…aN],…[”a0″,…aN]] my_array[E] = value myMultiDimensional_array[E][E] = value object[”value”] Parameters my_array The name of an array. a0, a1,…aN Elements in an array. myMultiDimensional_array The name of a simulated multidimensional array. E The number (or index) of an element in an array. object The name of an object. value A string or an expression that evaluates to a string that names a property of the object. 244 Chapter 12: ActionScript Dictionary
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Web hosting servers - /* (comment delimiter) Availability Flash Player 5. Usage

Friday, November 23rd, 2007

/* (comment delimiter) Availability Flash Player 5. Usage /* comment */ /* comment comment */ Parameters comment Any characters. Returns Nothing. Description Comment; indicates one or more lines of script comments. Any characters that appear between the opening comment tag /* and the closing comment tag */, are interpreted as a comment and ignored by the ActionScript interpreter. Use the first type of syntax to identify single-line comments. Use the second type of syntax to identify comments on multiple successive lines. Leaving off the closing tag */ when using this form of comment delimiter returns an error message. Example This script uses comment delimiters at the beginning of the script. /* records the X and Y positions of the ball and bat movie clips */ ballX = ball._x; ballY = ball._y; batX = bat._x; batY = bat._y; See also // (comment delimiter) /* (comment delimiter) 243
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Example The following statement divides the (Web hosting providers) floating-point number

Friday, November 23rd, 2007

Example The following statement divides the floating-point number 22.0 by 7.0 and then displays the result in the Output panel. trace(22.0 / 7.0); The result is 3.1429, which is a floating-point number. // (comment delimiter) Availability Flash 1. Usage // comment Parameters comment Any characters. Returns Nothing. Description Comment; indicates the beginning of a script comment. Any characters that appear between the comment delimiter // and the end-of-line character are interpreted as a comment and ignored by the ActionScript interpreter. Example This script uses comment delimiters to identify the first, third, fifth, and seventh lines as comments. // record the X position of the ball movie clip ballX = ball._x; // record the Y position of the ball movie clip ballY = ball._y; // record the X position of the bat movie clip batX = bat._x; // record the Y position of the bat movie clip batY = bat._y; See also /* (comment delimiter) 242 Chapter 12: ActionScript Dictionary
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?: (conditional) Availability Flash Player 4. Usage expression1 (Sri lanka web server)

Thursday, November 22nd, 2007

?: (conditional) Availability Flash Player 4. Usage expression1 ? expression2 : expression3 Parameters expression1 An expression that evaluates to a Boolean value, usually a comparison expression, such as x < 5. expression2, expression3 Values of any type. Returns Nothing. Description Operator; instructs Flash to evaluate expression1, and if the value of expression1 is true, it returns the value of expression2; otherwise it returns the value of expression3. Example The following statement assigns the value of variable x to variable z because expression1 evaluates to true: x = 5; y = 10; z = (x < 6) ? x: y; trace (z); // returns 5 / (division) Availability Flash Player 4. Usage expression1 / expression2 Parameters expression A number or a variable that evaluates to a number. Returns Nothing. Description Operator (arithmetic); divides expression1 by expression2. The result of the division operation is a double-precision floating-point number. / (division) 241
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Web site templates - Parameters variableName An identifier for a variable. type

Thursday, November 22nd, 2007

Parameters variableName An identifier for a variable. type A native data type, class name that you have defined, or interface name. functionName An identifier for a function. parameter An identifier for a function parameter. Description Operator; specifies the variable type, function return type, or function parameter type. When used in a variable declaration or assignment, this operator specifies the variable s type; when used in a function declaration or definition, this operator specifies the function s return type; when used with a function parameter in a function definition, this operator specifies the variable type expected for that parameter. Types are a compile-time-only feature. All types are checked at compile time, and errors are generated when there is a mismatch. (For more information, see Appendix A, Error Messages, on page 783.) Mismatches can occur during assignment operations, function calls, and class member dereferencing using the dot (.) operator. To avoid type mismatch errors, use explicit typing (see Strict data typing on page 38). Types that you can use include all native object types, classes and interfaces that you define, and Void and Function (which exist only as types, not as objects). The recognized native types are Array, Boolean, Button, Color, CustomActions, Date, Function, LoadVars, LocalConnection, Microphone, MovieClip, NetConnection, NetStream, Number, Object, SharedObject, Sound, String, TextField, TextFormat, Video, Void, XML, XMLNode, and XMLSocket. Example Usage 1: The following example declares a public variable named userName whose type is String and assigns an empty string to it. public var userName:String = “”; Usage 2: This example demonstrates how to specify a function s parameter type. The following code defines a function named setDate() that takes a parameter named currentDate of type Date. function setDate(currentDate:Date) { this.date = currentDate; } Usage 3: The following code defines a function named squareRoot() that takes a parameter named val of the Number type and returns the square root of val, also a Number type. function squareRoot(val:Number):Number { return Math.sqrt(val); } 240 Chapter 12: ActionScript Dictionary
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Web hosting - . (dot) Availability Flash Player 4. Usage object.property_or_method

Wednesday, November 21st, 2007

. (dot) Availability Flash Player 4. Usage object.property_or_method instancename.variable instancename.childinstance.variable Parameters object An instance of a class. The object can be an instance of any of the built-in ActionScript classes or a custom class. This parameter is always to the left of the dot (.) operator. property_or_method The name of a property or method associated with an object. All of the valid method and properties for the built-in classes are listed in the method and property summary tables for that class. This parameter is always to the right of the dot (.) operator. instancename The instance name of a movie clip. childinstance A movie clip instance that is a child of, or nested in, another movie clip. variable A variable on the Timeline of the movie clip instance name to the left of the dot (.)operator. Returns Nothing. Description Operator; used to navigate movie clip hierarchies in order to access nested (child) movie clips, variables, or properties. The dot operator is also used to test or set the properties of an object, execute a method of an object, or create a data structure. Example The following statement identifies the current value of the variable hairColor in the movie clip person_mc. person_mc.hairColor This is equivalent to the following Flash 4 syntax: /person_mc:hairColor : (type) Availability Flash Player 6. Usage [modifiers] [var] variableName:[type] function functionName():[type] { … } function functionName(parameter1[:type], … , parameterN[:type]) { … } : (type) 239
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Web site construction - Example Usage 1: The following example assigns the

Wednesday, November 21st, 2007

Example Usage 1: The following example assigns the value 50 to the variable x. x = 5; y = 10; trace (x *= y); // returns 50 Usage 2: The second and third lines of the following example calculate the expressions on the right-hand side of the equals sign and assign the results to x and y. i = 5; x = 4 - 6; y = i + 2; trace(x *= y); // returns -14 See also * (multiplication) , (comma) Availability Flash Player 4. Usage expression1, expression2 Parameters None. Returns Nothing. Description Operator; evaluates expression1, then expression2, and returns the value of expression2. This operator is primarily used with the for loop statement. Example The following code sample uses the comma operator: var a=1, b=2, c=3; This is equivalent to writing the following code: var a=1; var b=2; var c=3; 238 Chapter 12: ActionScript Dictionary
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