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Imagining this again as a spreadsheet, it would have 11 columns and five rows, but they would span across four worksheets, giving you a total of 220 pigeonholes If you remember that each one of these elements can take a string up to 65,400 characters, you begin to see how much memory can be used by a simple array and how much data can be stored Dimensioning an array immediately allocates memory to it this is an important consideration when planning your program Taking up large chunks of memory can cause your program and Windows to run inefficiently Because Windows itself is a graphical application, it uses large amounts of RAM (random access memory) to hold information You may find that using a large array slows Windows down, and other applications run more slowly and take longer to process information This may be all right on your home computer, but a professional application needs to take this into account Further dimensions are possible, but these become difficult to keep track of and manipulate Five dimensions is considered the safe maximum to use If you go back to thinking of an array as being like a series of spreadsheets, think how complicated a five-dimensional spreadsheet would be! ReDim can still be used to resize the array, but you cannot use it to change the number of dimensions in the array, nor can you use it to change the type of the array for example, from string to integer

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Delete messages by opening a folder in the navigation pane and performing one of the following actions:

Sometimes you do not know how large an array needs to be A good example is if you are recursively storing pathnames from a disk device in each array element You do not know how many subdirectories there are and how long a branch will extend You could set your array to 1,000 elements, taking up valuable memory in the process, and then find that you only needed 500 elements Alternatively, there could be 2,000 subdirectory pathnames, so you would run out of room You create a dynamic array in exactly the same way as a normal array using the Dim statement at the global, module, or local level, or using Static at the local level You give it an empty dimension list:

The idea of detecting when a Touch Sensor is pressed is pretty simple, but there are times when it s important to know when the Touch Sensor has been released. The release state is returned from the Touch Sensor whenever the actuator has returned to its normal position after being pressed. In a program, it may be important to know that the robot is no longer making contact with the object that it came in contact with originally. For example, your code could have logic that tells the robot to back up when the Touch Sensor is pressed then back up until the Touch Sensor is released, as shown in Figure 7 7.

Delete one message by clicking a message in the Folder pane and in the Home tab Delete group, clicking Delete Or Right-clicking a message in the Folder pane and clicking Delete

Dim temp()

Delete a block of messages by clicking the first message, holding down SHIFT, clicking the last message (all of the messages in between are selected as well), and in the Home tab Delete group, clicking Delete Delete multiple noncontiguous messages by pressing CTRL while clicking the messages you want to remove, and then in the Home tab Delete group, clicking Delete

1 Click the Deleted Items folder 2 Choose one:

You then use the ReDim statement within your procedure to resize the number of elements within the array The ReDim statement can only be used within a procedure, and you cannot change the number of dimensions:

Right-click the Deleted Items folder, and click Empty Deleted Items Folder Press CTRL+A to select all items in the folder, click Delete, and click Yes Select files to be permanently deleted as you did earlier, click Delete, and click Yes

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ReDim temp(100)