Audit (Arraylist subroutine)
Audit Arraylist (Arraylist class)
The Audit subroutine displays the contents of an Arraylist in a readable form on the Model 204 audit trail. The listed item values are displayed in ascending order by their position and, by default, are preceded by their item number, a colon and a blank space (': '
).
Audit is identical to Print and Trace, except that their output is sent to the and user's standard output (terminal) and the currently selected trace stream respectively.
Syntax
al:Audit[( [itemFunction], [NumWidth= number], [Separator= string], - [Start= number], [MaxItems= number], [Label= string])]
Syntax terms
al | An Arraylist object. |
---|---|
itemFunction | A function that is to be applied to al items to produce the audit trail output. itemFunction must take no parameters and produce an intrinsic (be that Float, String, Fixed or Unicode) value. It may be a system or user-written method, a class variable or property, a local method, or a method variable.
The default value of itemFunction is ToString. |
NumWidth | The number of bytes in the display of each item to use for the item number. This is an optional, name required, parameter; if you specify a value, the parameter name NumWidth is required.
Item numbers are right-justified within the indicated number of bytes, and they are truncated on the left if the length of the item number exceeds the space allocated for it. The NumWidth value must be a number between If NumWidth is |
Separator | A string, 15 characters or less, to be used to separate the item number from the item value. This is an optional, name required, argument; if you specify a value, the parameter name Separator is required.
The default value for Separator is a colon ( |
Start | The item number of the initial item in the output display. This is an optional, name required, argument; if you specify a value, the parameter name Start is required. The default value for Start is |
MaxItems | The maximum number of items to display. A zero or negative value means to display all the items. This is an optional, name required, argument; if you specify a value, the parameter name MaxItems is required.
The default value for MaxItems is |
Label | A literal string that gets output before each line. This is useful for "tagging" lines to make them more identifiable. This is an optional, name required, argument; if you specify a value, the parameter name Label is required.
The default value for Label is the null string |
Usage notes
- All errors in Audit result in request cancellation.
- Print and Trace are the same as Audit except they send their output to the current user output device (terminal) or currently selected trace destinations, respectively.
Examples
For examples of the Audit method calls, see "Printing a collection".