Chapter 5.3: Unique Collections

GLang provides a unique collection in its standard library, std_hashmap.

The std_hashmap module isn’t built in by default, so you’ll need to import it using the fetch keyword. We’ll cover fetch in more detail later, but for now, just add it to the top of your file.

fetch std_hashmap;

obj my_hashmap = hashmap();
hashmap_set(my_hashmap, "name", "Bob");
hashmap_set(my_hashmap, "favorite-color", "Green");

A hashmap is a collection of key–value pairs, think of it like a small, efficient lookup table.

Key	Value
name	Bob
favorite-color	Green

You can set new entries by providing a key and value, or get existing values by their corresponding keys.

fetch std_hashmap;

obj my_hashmap = hashmap();
hashmap_set(my_hashmap, "name", "Bob");

obj name = hashmap_get(my_hashmap, "name"); # 'Bob'