hash_example.c

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include "gdsl.h"

typedef struct _Block {
    // Important key member
    int key;
    // Rest of the stuff...
    int foo, bar, baz;
    const char * name;
} Block;

const char *my_key(void *val) {
    return (const char *)&(((Block *)val)->key);
}

ulong my_hash(const char *val) {
    return (ulong)(*((int *)val));
}

void print_block(Block *b){
    printf("Block named: %s, key: %d, foo, bar, baz: %d, %d, %d\n", b->name, b->key, b->foo, b->bar, b->baz);
}

int main() {
    gdsl_hash_t hash = gdsl_hash_alloc("hash",
                                       NULL,
                                       NULL,
                                       my_key,
                                       my_hash,
                                       2);
                                       
    Block a = {0, 1, 2, 3, "Hi"}, b = {1, 1, 2, 3, "Sup."};
    
    gdsl_hash_insert(hash, &a);
    gdsl_hash_insert(hash, &b);
    
    print_block(gdsl_hash_search(hash, (char *)&(a.key)));
    print_block(gdsl_hash_search(hash, (char *)&(b.key)));
    
    gdsl_hash_free(hash);
    
    return EXIT_SUCCESS;
}