Struct FunctionRegistry 

pub struct FunctionRegistry {
    pub native_functions: NativeFunctionMap,
    pub expression_functions: ExpressionFunctionMap,
}

Registry for different types of functions available in an evaluation context.

This struct holds three types of functions:

1. Native functions: Rust functions that can be called from expressions
2. Expression functions: Functions defined using expression strings
3. User functions: Functions defined by the user with custom behavior

This is an internal implementation detail and users typically don’t interact with it directly.

Fields

native_functions: NativeFunctionMap

Native functions implemented in Rust code

expression_functions: ExpressionFunctionMap

Functions defined using expression strings

Trait Implementations

impl Clone for FunctionRegistry

fn clone(&self) -> FunctionRegistry

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for FunctionRegistry

fn default() -> FunctionRegistry

Returns the “default value” for a type.