Add Subtrie::is_empty method

sdleffler / qp-trie-rs

An idiomatic and fast QP-trie implementation in pure Rust.

Mozilla Public License 2.0

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Closed messense closed 6 years ago

messense commented 6 years ago

Currently I have to use the following workaround:

let is_empty = subtrie.iter().next().is_none();

sdleffler commented 6 years ago

Looks good to me! Thanks for the PR!