Trait Attempt 

pub trait Attempt {
    // Required methods
    fn retrieve_attempt(&self) -> Option<u32>;
    fn push_attempt(&mut self, attempt: u32);
    fn increment_attempt(&mut self);
}

Artificial trait implemented for FieldTable to allow convenient handling of the header HEADER_ATTEMPT that carries the processing attempt number.

Required Methods

fn retrieve_attempt(&self) -> Option<u32>

Extracts the header value at the key HEADER_ATTEMPT in this FieldTable, if it can be inferred as a valid u32.

This method does not do any logical inference: e.g., if no attempt value is present, None is promptly returned.

fn push_attempt(&mut self, attempt: u32)

Sets the header value at the key HEADER_ATTEMPT in this FieldTable to the given u32 value.

fn increment_attempt(&mut self)

Increments the existing header value at the key HEADER_ATTEMPT in this FieldTable by one. If no value exists at that key, sets the new value to one.

Implementations on Foreign Types

impl Attempt for FieldTable

fn retrieve_attempt(&self) -> Option<u32>

fn push_attempt(&mut self, attempt: u32)

fn increment_attempt(&mut self)

Implementors