Some of the properties of associative arrays which are specified using wildcard index type are also shown below.

The entire array can be displayed using `do while`. If a default value is specified, then reading a nonexistent element shall yield the specified default value, and no warning shall be issued.īelow example shows associative array declarations and adding elements to the array. The associative array methods available ensure fastest access to all array elements.Īssociative arrays can be assigned only to another Associative array of a compatible type and with the same index type.In the same way, associative arrays can be passed as arguments only to associative arrays of a compatible type and with the same index type.Īssociative array literals use the ‘ That is, associative array maintains the entries that have been assigned values and their relative order according to the index data type. Associative array’s index expression is not restricted to integral expressions, but can be of any type.Īssociative array uses key value pairs and it implements a look up table. That means, it is dynamically allocated, but has non-contiguous elements. When the size of the collection is unknown or the data space is sparse, an associative array is used, which does not have any storage allocated unitil it is used. We have already discussed about dynamic array, which is useful for dealing with contiguous collection of variables whose number changes dynamically. Associative array is one of aggregate data types available in system verilog.

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