Trait SerializeHelper 

pub trait SerializeHelper<T> {
    // Required methods
    fn get_val_unsafe(&self, attr: &str, fun: fn(&Values) -> Option<T>) -> T;
    fn get_val_opt(
        &self,
        attr: &str,
        fun: fn(&Values) -> Option<T>,
    ) -> Option<T>;
    fn get_val_res(
        &self,
        attr: &str,
        fun: fn(&Values) -> Option<T>,
    ) -> Result<T, ParseError>;
    fn rm_val(
        &mut self,
        attr: &str,
        fun: fn(Values) -> Option<T>,
    ) -> Result<T, ParseError>;
    fn map_val(
        &mut self,
        attr: &str,
        fun: fn(Values) -> Result<T, ParseError>,
    ) -> Result<T, ParseError>;
    fn map_ref_val(
        &mut self,
        attr: &str,
        fun: fn(&Values) -> Result<T, ParseError>,
    ) -> Result<T, ParseError>;
    fn map_val_and_err<E: Error>(
        &mut self,
        attr: &str,
        fun: fn(Values) -> Result<T, E>,
    ) -> Result<T, ParseError>;
    fn map_opt_val(
        &mut self,
        attr: &str,
        fun: fn(Values) -> Option<T>,
    ) -> Result<Option<T>, ParseError>;
}

Helper Trait for Serializing JSON

Required Methods

fn get_val_unsafe(&self, attr: &str, fun: fn(&Values) -> Option<T>) -> T

directly get T without any further checks Warning: this operation calls the .unwrap() method

fn get_val_opt(&self, attr: &str, fun: fn(&Values) -> Option<T>) -> Option<T>

get an Option<T> without the Error message why the operation maybe failed

fn get_val_res( &self, attr: &str, fun: fn(&Values) -> Option<T>, ) -> Result<T, ParseError>

get a Result of T or ParseError containing Info why the operation failed. In this case the function only takes a referenced Values object and returns an Option<T>

fn rm_val( &mut self, attr: &str, fun: fn(Values) -> Option<T>, ) -> Result<T, ParseError>

get a Result of T or ParseError containing Info why the operation failed. In this case the function only takes a Values object and returns an Option<T>

fn map_val( &mut self, attr: &str, fun: fn(Values) -> Result<T, ParseError>, ) -> Result<T, ParseError>

get a Result of T or ParseError containing Info why the operation failed. In this case the function only takes a Values object and returns an Result<T,ParseError>

fn map_ref_val( &mut self, attr: &str, fun: fn(&Values) -> Result<T, ParseError>, ) -> Result<T, ParseError>

get a Result of T or ParseError containing Info why the operation failed. In this case the function only takes a referenced Values object and returns an Result<T,ParseError>

fn map_val_and_err<E: Error>( &mut self, attr: &str, fun: fn(Values) -> Result<T, E>, ) -> Result<T, ParseError>

get a Result of T or ParseError containing Info why the operation failed. In this case the function only takes a referenced Values object and returns an Result<T,E>

fn map_opt_val( &mut self, attr: &str, fun: fn(Values) -> Option<T>, ) -> Result<Option<T>, ParseError>

get a Result of Option<T> or ParseError containing Info why the operation failed. In this case the function only takes a referenced Values object and returns an Result<T,ParseError>

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<T> SerializeHelper<T> for HashMap<String, Values>

fn get_val_unsafe(&self, attr: &str, fun: fn(&Values) -> Option<T>) -> T

fn get_val_opt(&self, attr: &str, fun: fn(&Values) -> Option<T>) -> Option<T>

fn get_val_res( &self, attr: &str, fun: fn(&Values) -> Option<T>, ) -> Result<T, ParseError>

fn rm_val( &mut self, attr: &str, fun: fn(Values) -> Option<T>, ) -> Result<T, ParseError>

fn map_val( &mut self, attr: &str, fun: fn(Values) -> Result<T, ParseError>, ) -> Result<T, ParseError>

fn map_ref_val( &mut self, attr: &str, fun: fn(&Values) -> Result<T, ParseError>, ) -> Result<T, ParseError>

fn map_val_and_err<E: Error>( &mut self, attr: &str, fun: fn(Values) -> Result<T, E>, ) -> Result<T, ParseError>

fn map_opt_val( &mut self, attr: &str, fun: fn(Values) -> Option<T>, ) -> Result<Option<T>, ParseError>

Implementors