Struct eval::Function

pub struct Function {
    pub max_args: Option<usize>,
    pub min_args: Option<usize>,
    pub compiled: Box<Fn(Vec<Value>) -> Result<Value, Error> + Sync + Send>,
}

Custom function

Fields

max_args: Option<usize>

Maximum number of arguments.

min_args: Option<usize>

Minimum number of arguments.

compiled: Box<Fn(Vec<Value>) -> Result<Value, Error> + Sync + Send>

Accept values and return a result which contains a value.

Methods

impl Function

pub fn new<F>(closure: F) -> Function where     F: 'static + Fn(Vec<Value>) -> Result<Value, Error> + Sync + Send,

Create a function with a closure.

Trait Implementations

impl Debug for Function

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.