Module dictionary 

Dictionary encoding for repeated strings.

If your data has lots of repeated strings (like node labels or edge types), dictionary encoding stores each unique string once and references it by a small integer code. A million “Person” labels becomes one string + a million 4-byte codes instead of a million strings.

Example

let mut builder = DictionaryBuilder::new();
builder.add("Person");
builder.add("Company");
builder.add("Person");  // same as first - reuses code 0
builder.add("Person");  // reuses code 0 again

let dict = builder.build();
// Dictionary: ["Person", "Company"]
// Codes:      [0, 1, 0, 0]
assert_eq!(dict.dictionary_size(), 2);  // Only 2 unique strings stored

Structs

DictionaryBuilder

Builds a dictionary encoding by streaming values through.

DictionaryEncoding

Stores repeated strings efficiently by referencing them with integer codes.

Traits

IntoDictionaryEncoding

Extension trait for building dictionary encodings from iterators.