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", so this trait is not object safe.

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