Built-In Packages ================= {{#include ../../links.md}} `Engine::new` creates an [`Engine`] with the `StandardPackage` loaded. `Engine::new_raw` creates an [`Engine`] with _no_ [package] loaded. | Package | Description | In `Core` | In `Standard` | | ---------------------- | ----------------------------------------------------------------------------------------------------------- | :-------: | :-----------: | | `LanguageCorePackage` | core functions for the Rhai language | yes | yes | | `ArithmeticPackage` | arithmetic operators (e.g. `+`, `-`, `*`, `/`) for numeric types that are not built in (e.g. `u16`) | yes | yes | | `BitFieldPackage` | basic [bit-field] functions | **no** | yes | | `BasicIteratorPackage` | numeric ranges (e.g. `range(1, 100, 5)`), iterators for [arrays], [strings], [bit-fields] and [object maps] | yes | yes | | `LogicPackage` | logical and comparison operators (e.g. `==`, `>`) for numeric types that are not built in (e.g. `u16`) | **no** | yes | | `BasicStringPackage` | basic string functions (e.g. `print`, `debug`, `len`) that are not built in | yes | yes | | `BasicTimePackage` | basic time functions (e.g. [timestamps], not available under [`no_time`] or [`no_std`]) | **no** | yes | | `MoreStringPackage` | additional string functions, including converting common types to string | **no** | yes | | `BasicMathPackage` | basic math functions (e.g. `sin`, `sqrt`) | **no** | yes | | `BasicArrayPackage` | basic [array] functions (not available under [`no_index`]) | **no** | yes | | `BasicBlobPackage` | basic [BLOB] functions (not available under [`no_index`]) | **no** | yes | | `BasicMapPackage` | basic [object map] functions (not available under [`no_object`]) | **no** | yes | | `BasicFnPackage` | basic methods for [function pointers] | yes | yes | | `DebuggingPackage` | basic functions for [debugging][debugger] (requires [`debugging`]) | yes | yes | | `CorePackage` | basic essentials | yes | yes | | `StandardPackage` | standard library (default for `Engine::new`) | **no** | yes | `CorePackage` ------------- If only minimal functionalities are required, register the `CorePackage` instead. ```rust use rhai::Engine; use rhai::packages::{Package, CorePackage}; let mut engine = Engine::new_raw(); let package = CorePackage::new(); // Register the package into the 'Engine'. package.register_into_engine(&mut engine); ```