Module handler 

Handler traits and implementations for processing environments.

This module provides a handler system that allows functions to process environments and extract parameters from them in various ways:

• Handler - For immutable handlers that don’t change during execution
• HandlerMut - For mutable handlers that may modify their state
• HandlerOnce - For single-use handlers that are consumed during processing

The module also provides utility functions to convert regular functions into handlers with automatic parameter extraction from environments.

Structs

AnyViewBuilder

A builder for creating views from handler functions.

IntoHandler

Wrapper that converts a function into a handler.

IntoHandlerOnce

Wrapper that converts a function into a handler.

IntoHandlerWithState

A wrapper that allows a handler function with state to be used as a regular handler.

Traits

Handler

Handler trait that processes an environment and produces a result of type T.

HandlerFn

Function-like trait for immutable handlers that extract parameters from the environment.

HandlerFnOnce

Function-like trait for single-use handlers that extract parameters from the environment.

HandlerFnWithState

Function-like trait for immutable handlers that extract parameters from the environment with additional state.

HandlerOnce

Handler trait for single-use handlers that are consumed during execution.

ViewBuilder

A trait for types that can repeatedly construct views.

Functions

into_handler

Converts a function into an immutable handler.

into_handler_once

Converts a single-use function into a one-time handler.

into_handler_with_state

Creates a handler with associated state from a handler function and state value.

Type Aliases

ActionObject

Type alias for an action handler that produces no result.

BoxHandler

A boxed handler with dynamic dispatch.

BoxHandlerOnce

A boxed one-time handler with dynamic dispatch.