Print (Arraylist subroutine)

Print Arraylist (Arraylist class)

The Print subroutine displays the contents of an Arraylist in a readable form to the user current standard output (terminal) device. 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 (': ').

Print is identical to Audit and Trace, except their output is sent to the Model 204 audit trail (like the User Language Audit statement) and trace destinations, respectively.

Syntax

al:Print[( [itemFunction], [NumWidth= number], [Separator= string], - [Start= number], [MaxItems= number], [Label= string])]

Syntax terms

al	An Arraylist object.
itemFunction	The method that is to be applied to al items to produce the printed output. The method 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 -1 and 10 inclusive. If you specify a value of 0, the item number is not displayed. If NumWidth is -1, the default, the method uses the minimum number of bytes required to show the item number. For example, one byte is required for item number 5, while five bytes are required for item number 98764.
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 (':'); and a blank always follows the Separator string.
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 1; to start with the first item in the al.
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 0; to display all items from Start to the end of the al.
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 ''; to not display any additional "tag" information.

Usage notes

• All errors in Print result in request cancellation.
• Audit and Trace are similar to Print except they send their output to the Model 204 audit trail and trace destinations, respectively.

Examples

For examples of Print method calls, see "Printing a collection".

See also

Arraylist class FloatNamedArraylist class NamedArraylist class UnicodeNamedArraylist class	List of Arraylist methods List of FloatNamedArraylist methods List of NamedArraylist methods List of UnicodeNamedArraylist methods List of Collection methods	Arraylist methods syntax FloatNamedArraylist methods syntax NamedArraylist methods syntax UnicodeNamedArraylist methods syntax
Notation conventions for methods