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| Attributes: list-valued | |||||
| Related Syntax | |||||
A list-valued attribute's declaration is one of:
When the attribute is a list-valued attribute, a particular item in the list can be accessed with an item (or @) phrase. For example:
attribute col-w @ 3
The selector must not be greater than the number of items in the attribute value. The number of items in a list-valued attribute can be determined by using the number of operator.
Determining the system, public identifier, or notation of an entity name used in an ENTITIES attribute requires the use of the item (or @) phrase.
List-valued attributes differ from shelves in the following ways:
item (or @) phrase, the entire value will be selected as if it were a single string without each token being separated by a space. (A different character can be used to separate the values by specifying it in the delimiter declaration.)
has key operator is not permitted on a list-valued attribute.
The following is an example of how a repeat over can be used to iterate over the values in a list-valued attribute:
element e
local counter attribute-value-length variable
...
repeat over attribute-value-length & attribute multi
set attribute-value-length to length of attribute multi
again
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Related Syntax attribute delimiter has key item number of number of attributes |
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