codesnips

traits

php 
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Recording an Audit Trail of Model Changes with a Laravel Observer

laravel eloquent observers
by codesnips 4 tabs
php 
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Optimistic Locking With a Version Column in Laravel Eloquent

laravel eloquent optimistic-locking
by codesnips 4 tabs
rust 
#[derive(Debug, Clone, PartialEq)]
struct Point {
    x: i32,
    y: i32,
}

Derive macros for automatic trait implementations

rust macros traits
by Marcus Chen 1 tab
rust 
use std::collections::HashMap;
use serde_json::Value;

#[derive(Debug)]
pub enum DispatchError {
    UnknownCommand(String),

Compile-Time Command Dispatch Table With a Rust Declarative Macro

rust macros dispatch
by codesnips 3 tabs
php 
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

Polymorphic Media Attachments in Laravel With a Queued Image Resize Job

laravel polymorphism eloquent
by codesnips 4 tabs
rust 
use std::fmt;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum OrderState {
    Pending,
    Paid,

Type-State Order Lifecycle Machine With Compile-Time Transition Safety in Rust

state-machine enums type-state
by codesnips 3 tabs
rust 
use serde::Deserialize;

#[derive(Debug, Deserialize)]
pub struct Page<T> {
    pub items: Vec<T>,
    #[serde(default)]

Streaming a Paginated HTTP API as a Rust Iterator

rust iterator pagination
by codesnips 3 tabs
rust 
use once_cell::sync::Lazy;
use regex::Regex;
use std::str::FromStr;

#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum Severity {

Grouping Log Lines by Severity and Emitting a Summary Report in Rust

logging parsing cli
by codesnips 3 tabs
rust 
#[derive(Debug, Clone)]
pub enum Outcome {
    Approve,
    Review,
    Reject(String),
}

Modeling and Evaluating a Decision Tree with Recursive Rust Enums

rust enums recursion
by codesnips 3 tabs
rust 
use std::error::Error;
use std::fmt;
use std::io;
use std::num::ParseIntError;

#[derive(Debug)]

Custom Error Enum With From Conversions for the ? Operator in Rust

rust error-handling traits
by codesnips 3 tabs
rust 
struct Logger {
    name: String,
}

impl Drop for Logger {
    fn drop(&mut self) {

Drop trait for custom cleanup logic

rust traits memory-management
by Marcus Chen 1 tab
rust 
fn print_size<T: ?Sized>(value: &T) {
    // Can accept both &str and &String
    println!("Value: {:p}", value as *const T as *const ());
}

fn main() {

Sized trait and ?Sized for dynamically-sized types

rust traits types
by Marcus Chen 1 tab