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| <span style="font-size:120%; color:black"><b><section begin=dpl_desc/>Print a UnicodeNamedArraylist<section end=dpl_desc/></b></span>
| | #REDIRECT [[Print (GenericNamedArraylist subroutine)]] |
| [[Category:UnicodeNamedArraylist methods|Print subroutine]]
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| <!--DPL?? Category:UnicodeNamedArraylist methods|Print subroutine: Print a UnicodeNamedArraylist-->
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| <p>
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| Print is a member of the [[UnicodeNamedArraylist class]].
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| </p>
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| This subroutine displays the contents of a UnicodeNamedArraylist on the user's
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| standard output device, typically a terminal.
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| The list item values, displayed in order by their subscript names,
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| are preceded by their item number and item name, both of which by default
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| are followed by a colon (<tt>:</tt>) and a blank.
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| ==Syntax==
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| %unamrayl:Print( [method] -
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| [, NumWidth=itemnumlen] -
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| [, Separator=separator] -
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| [, NameWidth=itemnamelen] -
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| [, Start=firstitem] -
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| [, MaxItems=maxitems] -
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| [, Label=label] )
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| ===Syntax Terms===
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| <dl>
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| <dt><i>%rc</i>
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| <dd>A numeric variable that is set to the number of UnicodeNamedArraylist items displayed.
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| <dt><i>%unamrayl</i>
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| <dd>A UnicodeNamedArraylist object.
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| <dt><i>method</i>
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| <dd>The method that is applied to ''%unamrayl'' items to produce the
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| printed output.
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| The method must take no parameters and produce an intrinsic (Float,
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| String, Fixed, Unicode) value.
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| It may be a system or user-written
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| method, a class Variable or Property, a local method ([[??]] refid=localm.),
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| or a [[Method variables|Method variable]].
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| The default value of ''method'' is <tt>ToString</tt>.
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| <dt><b>NumWidth=</b><i> itemnumlen</i>
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| <dd>The number of bytes in the display of each item to use for the
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| item number.
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| This is an optional parameter; if you specify a value, the parameter
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| name <tt>NumWidth</tt> is required.
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| Item numbers are right-justified within the indicated number of bytes, and they
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| are truncated on the left if the length of the item number exceeds the
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| space allocated for it.
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| The width must be a number between -1 and 10 inclusive.
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| If you specify a value of 0, the item number is not displayed.
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| If NumWidth is -1, the default, the method uses the minimum number
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| of bytes required to show the item number.
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| For example, one byte is required for item number 5, while five bytes
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| are required for item number 98764.
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| <dt><b>Separator=</b><i> separator</i>
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| <dd>A String, 15 characters or less, to be used to separate both the item
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| number and the item name from what follows.
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| That is, the ''separator'' you specify appears twice: once after the
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| item number and once after the item name.
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| This is an optional argument whose default is a colon (<tt>:</tt>).
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| A blank always follows the ''separator'' string.
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| If you specify a value, the parameter name <tt>Separator</tt> is required.
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| <dt><b>Start=</b><i> firstitem</i>
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| <dd>The item number of the initial item in the output display.
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| This is an optional argument, and it defaults to 1.
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| If you specify a value, the parameter name <tt>Start</tt> is required.
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| <dt><b>MaxItems=</b><i> maxitems</i>
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| <dd>The maximum number of items to display.
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| A zero or negative value means to display all the items.
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| This is an optional argument, and it defaults to zero.
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| If you specify a value, the parameter name <tt>MaxItems</tt> is required.
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| <dt><b>Label=</b><i> label</i>
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| <dd>A literal string that gets output before each line.
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| This is useful for “tagging” lines to make them more identifiable.
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| This is an optional argument whose default is a null string.
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| If you specify a value, the parameter name <tt>Label</tt> is required.
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| <dt><b>NameWidth=</b><i> itemnamelen</i>
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| <dd>The number of bytes in the display of the item name.
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| This must be a number from -1 through 255.
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| If you specify a value, the parameter name <tt>NameWidth</tt> is required.
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| Item names are left-justified within the indicated number of bytes, and they
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| are truncated on the right if the length of the item name exceeds the
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| space allocated for it.
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| This can result
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| in names being truncated in the middle of a character encoding of a Unicode
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| character that is not translatable to EBCDIC (as shown in
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| "[[Collections#Examples of subscript display format for named collections|Examples of subscript display format for named collections]]").
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| If you specify a value of 0, the item name is not displayed.
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| This is an optional argument; it defaults to -1, which directs the method to use
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| whatever number of bytes are necessary to show the entire item name.
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| For example, three bytes are required for item name <tt>Foo</tt>, while
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| eight bytes are required for item name <tt>Malmberg</tt>.
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| </dl>
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| ==Usage Notes==
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| <ul>
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| <li>All errors in Print result in request cancellation.
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| <li>Since the maximum number of bytes of a subscript name that can be
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| displayed is 255, and the names in UnicodeNamedArraylists can be 127 characters
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| long and might be character encoded on display, Print may not
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| be able to display the full name of certain item subscripts.
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| If all the characters in a Unicode name need to be encoded, the 255-byte limit
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| can still accommodate 31 characters.
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| <li>[[Audit (UnicodeNamedArraylist subroutine)|Audit]] and [[Trace (UnicodeNamedArraylist subroutine)|Trace]] are
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| the same as Print except they send their output to the audit trail
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| and selected trace destination, respectively.
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| <li>For examples of Print method calls, see [[Collections#Printing a collection|Printing a collection]].
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| </ul>
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