Code Explainers

Code explainers tagged #traits

php 
<?php
 
namespace App\Models\Concerns;
 

How an Auditable trait logs Eloquent changes in Laravel

traits model-events polymorphic-relations
Intermediate 8 steps
rust 
pub struct Fibonacci {
    current: u64,
    next: u64,
}

A Fibonacci iterator in Rust

iterators traits lazy-evaluation
Intermediate 6 steps
rust 
use axum::{
    async_trait,
    body::Bytes,
    extract::FromRequest,

A strict JSON extractor in Axum

extractors traits content-negotiation
Advanced 7 steps
rust 
use axum::{
    async_trait,
    extract::{FromRequestParts, State},
    http::{header, request::Parts, StatusCode},

Custom auth extractors in Axum

extractors authentication error-handling
Intermediate 9 steps
rust 
use std::fmt;
use std::str::FromStr;
 
#[derive(Debug, Clone, PartialEq, Eq, Hash)]

A validated Email newtype in Rust

newtype validation error-handling
Intermediate 9 steps
rust 
use axum::{
    async_trait,
    extract::{rejection::JsonRejection, FromRequest, Request},
    http::StatusCode,

A validating JSON extractor in Axum

extractors validation error-handling
Intermediate 7 steps
rust 
/// A custom iterator that yields Fibonacci numbers up to a maximum value.
pub struct Fibonacci {
    current: u64,
    next: u64,

Building a custom Fibonacci iterator in Rust

iterators traits state-machine
Intermediate 6 steps