Trait GroupFunctionTrait 

pub trait GroupFunctionTrait:
    Send
    + Sync
    + Debug
    + Display
    + FunctionTrait {
    // Required methods
    fn call(&self, input: &str) -> String;
    fn box_clone(&self) -> Box<dyn GroupFunctionTrait>;
}

User supplied Mapping function

Required Methods

fn call(&self, input: &str) -> String

calls the function

fn box_clone(&self) -> Box<dyn GroupFunctionTrait>

Creates a boxed clone of the function object (clone doesn’t work with boxed traites)

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors