Cargo features

Every optional capability is off by default. A plain dependency therefore stays sequential, pulls in no Rayon and no statistical language detector, and costs you nothing you did not ask for.

Available features

Crate(s)	Feature	What it enables
14 crates, listed below	parallel	Explicit par_* batch APIs backed by Rayon.
verbora-language	language-detection	WhatlangDetector, backed by the optional whatlang dependency.
verbora-language	fast-language-detection	HashedLinearDetector, using compiled-in model weights and no extra dependency.

Those three are the whole list. Nothing here gates a serialization hook: where serialization exists it is unconditional — verbora-tfidf persists a corpus through TfIdf::to_json / TfIdf::from_json, and verbora-classifiers through its own model format — so there is no feature to turn on and no feature that compiles to nothing.

parallel

Available in:

verbora-analyzers       verbora-classifiers     verbora-distance
verbora-language        verbora-normalizers     verbora-phonetics
verbora-sentiment       verbora-spellcheck      verbora-stemmers
verbora-tagger          verbora-tfidf           verbora-tokenizers
verbora-transliterators verbora-wordnet

It never turns a sequential API into an implicitly parallel one. You opt in twice: once to the Cargo feature, once to an explicitly named par_* call.

[dependencies]
verbora-tokenizers = { version = "0.2", features = ["parallel"] }
verbora-language = {
  version = "0.2",
  features = ["fast-language-detection", "parallel"]
}

Use it for batches large enough to amortize scheduling; for a single item or a small batch, the ordinary sequential API wins. See Parallelism for the available operations and the measured crossover points.

Crates without optional features

verbora-core, verbora-inflectors, verbora-ngrams, verbora-trie and verbora-util have no optional features. default-features = false is harmless anywhere in the workspace, because every default feature set is empty.

Both extremes of the feature matrix are supported:

cargo test --workspace --no-default-features
cargo test --workspace --all-features

Build profiles

Profile	Settings	Use it for
release	opt-level = 3, thin LTO, 16 codegen units	Normal production builds
release-max	fat LTO, one codegen unit	Maximum runtime speed when longer builds are acceptable

cargo build --profile release-max