0.8.4

• motoko (moc)

  • Performance improvement: UTF-8 coding and validation is now properly tail recursive (#3842).

  • Performance improvement: eliminated bounds checking for certain array accesses (thanks to nomeata) (#3853).

  • Performance improvement: optimized {array, blob, text}.size() operations (thanks to nomeata) (#3863).

  • Performance improvement: efficient tuple results in switch statements (thanks to nomeata) (#3865).

  • Performance improvement: more efficient untagging operation (#3873).

  • bugfix: restored a grammar regression caused by let-else (#3869).

• motoko-base

  • Add Array.subArray function (caffeinelabs/motoko-base#445).

  • BREAKING CHANGE (Minor)

    Optimized AssocList.{replace, find} to avoid unnecessary allocation (caffeinelabs/motoko-base#535, caffeinelabs/motoko-base#539).
    Note: this subtly changes the order in which the key-value pairs occur after replacement. May affect other containers that use AssocList.

  • Performance improvement: Optimized deletion for Trie/TrieMap (caffeinelabs/motoko-base#525).