uxderrick

Web Animation Best Practices & Guidelines

Document Purpose

This is a comprehensive reference guide for creating high-quality web animations. Use this as a knowledge base for implementing animations in web applications. All principles, timing values, and easing functions provided here are production-tested and ready to use.

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Core Principles

Principle 1: Natural Motion

nandanmen

import "server-only";
import { parse } from "@babel/parser";
import traverse from "@babel/traverse";
import * as t from "@babel/types";
import { generate } from "@babel/generator";

const SNAPSHOT = "__snapshots";

export function parseAlgorithm(code: string) {
  const ast = parse(code);

pasqualevitiello

"use client"

import * as React from "react"
import { Slot } from "@radix-ui/react-slot"
import { cva, VariantProps } from "class-variance-authority"
import { PanelLeftIcon } from "lucide-react"

import { cn } from "@/lib/utils"
import { useIsMobile } from "@/hooks/use-mobile"
import { Button } from "@/components/ui/button"

DeluxeOwl

original: https://www.reddit.com/r/ProgrammingLanguages/comments/1lgcbhe/an_algorithm_for_parsing_with_userdefined_mixfix/?share_id=sScCkD2vAveIZeCurtMw1

This post is meant as a long-overdue reply to u/PitifulTheme411's question on this topic. The length is unfortunate, but I wanted to be sure that I was explaining the algorithm in detail so that it could be reproduced.

An ad-hoc parser for user-defined mixfix operators in contexts

This algorithm supports defining mixfix operators with different parsing behavior based on context: possible contexts include expressions, patterns, types, and top-level declarations. A total order of precedence is assumed, but is not required. This algorithm also does not correspond to any formalism that I am aware of, so it's going to be the only thing that can parse your files if you use it.

Declarations of syntax within the file being parsed are not supported: they're relatively easy to analyze and provide IDE support for (both the file with the definitions and the file b

hirbod

import { File, type FileHandle } from 'expo-file-system/next'

interface FileInput {
  uri: string
}

export default class TusFileReader {
  async openFile({ uri }: FileInput) {
    const handle = new File(uri)
    if (!handle.exists || !handle.size) throw new Error(`File ${uri} not found`)

pqoqubbw

// useful links:
// custom easing by Lochie (x.com/lochieaxon): https://www.easing.dev
// motion-primitives by Ibelick (x.com/Ibelick): https://motion-primitives.com/docs
// The Magic of Clip Path article by Emil Kowalski (x.com/emilkowalski_): https://emilkowal.ski/ui/the-magic-of-clip-path

// we use same transition for every element to make it look consistent
const transition: Transition = {
  duration: 2.5,
  // custom easing from https://www.easing.dev
  ease: [0.175, 0.885, 0.32, 1],

guilhermerodz

// .vscode/settings.json
{
  "tailwindCSS.experimental.classRegex": [
    ["cva\\(([^)]*)\\)", "[\"'`]([^\"'`]*).*?[\"'`]"],
    ["cn\\(([^)]*)\\)", "(?:'|\"|`)([^']*)(?:'|\"|`)"],
    ["styled\\(([^)]*)\\)", "(?:'|\"|`)([^']*)(?:'|\"|`)"]
  ],
}

hirbod

import { useSafeAreaInsets } from 'react-native-safe-area-context'
import { useCallback, useLayoutEffect, useMemo, useReducer, useRef, useState } from 'react'
import { ActivityIndicator, Keyboard, Platform, Text, View, TextInput, useWindowDimensions } from 'react-native'
import Animated from 'react-native-reanimated'

const SearchBar = () => {
  const inset = useSafeAreaInsets()
  const [isFocused, toggle] = useReducer((s) => !s, false)
  const ref = useRef<View>(null)
  const rect = useRef({ width: 0, height: 0, x: 0, y: 0 })

jphsd

How to use channels across different processes in Go

A couple of code samples to show how a named pipe can be used to extend Go's channel paradigm for use between different processes running on a system.

• interprocess1.go details a single byte channel.
• interprocess2.go details a channel that passes slices of bytes.

Note that opening a write channel will return two channels -

AndrasKovacs

Lightweight region memory management in a two-stage language

• Intro
• Basics
  • Stage inference
• Regions
  • Bit-stealing
  • Using regions
• Eager regions