HP Prime Graphing NW280AAABA manual Variables and Programs

TYPE Syntax: TYPE(object)

Returns the type of the object:

0:Real

1:Integer

2:String

3:Complex

4:Matrix

5:Error

6:List

8:Function

9:Unit

14.?: cas object. The fractional part is the cas type.

Variables and Programs

The HP Prime has four types of variables: Home variables, App variables, CAS variables, and User variables. You can retrieve these variables from the Variable menu (a).

The names of Home variables are reserved; that is, they cannot be deleted from the system and cannot be used to store objects of any other type than that for which they were designed. For example, A–Z and θ are reserved to store real numbers, Z0–Z9 are reserved to store complex numbers, and L0–L9 are reserved to store lists, etc. As a result, you cannot store a matrix in L8 or a list in Z.

Home variables keep the same value in Home and in apps; that is, they are global variables common to the system. They can be used in programs with that understanding.

App variable names are also reserved, though a number of apps may share the same app variable name. In any of these cases, the name of the app variable must be qualified if that variable is not from the current app. For example, if the current app is the Function app, Xmin will return the minimum x-value in the Plot view of the Function app. If you want the minimum value in the Plot view of the Polar app, then you must enter Polar.Xmin. App

556 Programming in HP PPL