preshed_preshmap_integer_key_value_storage_quickstart.py

1from preshed.maps import PreshMap
2
3# Initialize the map with an initial capacity
4# PreshMap is a hash map that stores 64-bit keys and 64-bit values
5h = PreshMap(initial_size=1024)
6
7# Insert a key and a value
8# Keys and values must be 64-bit integers (uint64_t)
9key = 123
10value = 456
11h[key] = value
12
13# Retrieve a value by key
14# Returns None if the key is not found
15result = h.get(key)
16print(f"Value for {key}: {result}")
17
18# Check if a key exists in the map
19if key in h:
20    print(f"Key {key} exists in the map.")
21
22# Update a value
23h[key] = 789
24print(f"Updated value for {key}: {h[key]}")