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FunctionRegistry

mf_expression::functions

Struct FunctionRegistry 

Source 
pub struct FunctionRegistry { /* private fields */ }
Expand description

函数注册表

负责管理和查找所有可用的函数定义，包括内置函数和已废弃函数

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impl FunctionRegistry

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pub fn get_definition(kind: &FunctionKind) -> Option<Rc<dyn FunctionDefinition>>

根据函数类型获取函数定义

§参数
  • kind - 函数类型（内置、已废弃、闭包或自定义）
§返回值
  • Some(Rc<dyn FunctionDefinition>) - 找到的函数定义
  • None - 未找到对应的函数定义

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fn from(t: T) -> T

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type Error = Infallible

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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.