4.Change the current folder specification to “Test”.

• Use Variable Manager (page 27) to create a folder named “Test” and change the current folder specification.

5.Perform the following operations to view the contents of variables “eq1” and “eq2”.

eq1E

(Since this key operation does not access the “main” folder, the variable name (“eq1”) is displayed without showing the variable contents.)

main\eq1E

(Specifying the path to the “main” folder where “eq1” is located displays the contents of the variable.)

eq2E

(Since variable “eq2” is stored in the “library” folder, you do not need to indicate a path to access it.)

Tip: Specifying a variable name that exists in both the current folder and the “library” folder causes the variable in the current folder to be accessed. For details about the variable access priority sequence and how to access variables in particular folders, see “Rules Governing Variable Access” below.

Rules Governing Variable Access

Normally, you access a variable by specifying its variable name. The rules in this section apply when you need to reference a variable that is not located in the current folder or to access a variable that has the same name as one or more variables located in other folders.

kVariable Search Priority Sequence

Specifying a variable name to access a variable causes variables to be searched in the sequence below.

(1) Local variables(2) Current folder variables(3) “library” folder variables

 

 

 

•Multiple variables with the same name can exist simultaneously as a local variable, as a variable in the current folder, and as a variable in the “library” folder. In this case, the ClassPad searches folders according to the sequence shown above and accesses the first instance of the variable that it finds. If you want to access such a variable when it occurs lower in the above sequence, you need to specify the folder name along with the variable name as shown in “Specifying a Variable in a Particular Folder” below.

•If a variable you specify cannot be found, it is treated as an “undefined variable”.

•Note that “system” variables are not included in the above variable search. When accessing a system variable, you need to specify the variable name only, without specifying the folder name.

Tip: Only local variables and current folder variables are searched in the case of an operation that stores variable data or a command that performs an operation on a variable (like “DelVar”). Normally, “library” folder variables are not searched. If you want to include “library” folders in the search, you need to specify the “library” folder as the variable location as explained below.

kSpecifying a Variable in a Particular Folder

You can access a variable located inside the “main” folder, “library” folder, or a particular user folder by specifying the folder name along with the variable name.

Use the following syntax when specifying a folder name:<folder name>\<variable name>Example: To specify variable “abc” located in the “main” folder main\abc

Chapter 1: Basics

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