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/*
* Linux DTrace
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
#!/usr/sbin/dtrace -s
/*
* SYNOPSIS
* sudo ./006intro-associative.d
*
* DESCRIPTION
* The D language also supports associative arrays.
*/
/* associative arrays can be declared explicitly by key (if any) and value types */
int exp[string, int];
BEGIN
{
/* associative arrays can also be declared implicitly */
imp["hello", 5] = 1234;
/* values not set are assumed to be 0 */
printf("set value is %d; unset value is %d\n",
imp["hello", 5],
exp["hello", 5]);
/* when you are done, set a value back to 0 to free the memory */
imp["hello", 5] = 0;
/*
* By the way, you cannot promote a char associative array
* to a string -- whether with stringof or (string) -- since
* it is not a consecutive block of memory holding chars in sequence.
*/
exit(0);
}
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