Syntax

void cn_map_set_func_destructor(CN_MAP map, void (*destruct_func)(CNM_NODE *))

Description

Sets the destructor function of map to destruct_func. The destruct function is an optional function that, if not NULL, is called when each node is freed from memory. This function is not intended to be used after data has been inserted into the CN_Map.

Return Value

N/A

Examples

Basic Usage

#include <stdio.h>
#include <stdlib.h>

#include "cn_cmp.h"
#include "cn_map.h"

//Frees the key c-string in a CN_Map node when it is removed from the CN_Map
void destruct_key(CNM_NODE *node) {
	char *v = *(char **) node->key;
	
	if (v != NULL)
		free(v);
}

main() {
	//Create a new cn_map
	CN_MAP map = cn_map_init(char*, int, cn_cmp_cstr);

	//Set the destructor function
	cn_map_set_func_destructor(destruct_key);

	//Free the CN_Map
	cn_map_free(map);
}