oatmealine

A metatable can be defined like

local t = setmetatable({}, {
  __tostring = function() return 'custom tostring behavior!' end
})

Here are the metamethods that you can define, and their behavior

Operators

Higher08

//
//  Router.swift
//  Routing
//
//

import SwiftUI

enum Views: CaseIterable {
    case main

c-villain

extension View {
    
    // MARK: Vertical Center
    func vCenter() -> some View {
        self
            .frame(maxHeight: .infinity, alignment: .center)
    }
    
    // MARK: Vertical Top
    func vTop() -> some View {

LeviSnoot

Discord Timestamps

Discord timestamps can be useful for specifying a date/time across multiple users time zones. They work with the Unix Timestamp format and can be posted by regular users as well as bots and applications.

The Epoch Unix Time Stamp Converter is a good way to quickly generate a timestamp. For the examples below I will be using the Time Stamp of 1543392060, which represents November 28th, 2018 at 09:01:00 hours for my local time zone (GMT+0100 Central European Standard Time).

Formatting

Style	Input	Output (12-hour clock)	Output (24-hour clock)
Default	<t:1543392060>	November 28, 2018 9:01 AM	28 November 2018 09:01

BrentMifsud

import Foundation
import SwiftUI
#if canImport(UIKit)
import UIKit
#elseif canImport(AppKit)
import AppKit
#endif

extension Image {
    /// Initializes a SwiftUI `Image` from data.

WorldDownTown

// https://www.w3.org/TR/WCAG20/
// Contrast ratio
// Relative luminance

import UIKit

extension UIColor {
    convenience init(hex: UInt, alpha: CGFloat = 1) {
        self.init(red: CGFloat((hex & 0xff0000) >> 16) / 255,
                  green: CGFloat((hex & 0x00ff00) >> 8) / 255,

seanf

import java.lang.ProcessBuilder.Redirect
import java.util.concurrent.TimeUnit

fun String.runCommand(workingDir: File? = null) {
    val process = ProcessBuilder(*split(" ").toTypedArray())
            .directory(workingDir)
            .redirectOutput(Redirect.INHERIT)
            .redirectError(Redirect.INHERIT)
            .start()
    if (!process.waitFor(10, TimeUnit.SECONDS)) {

lzhoucs

#!/bin/bash

echo "removing evaluation key"
rm ~/.IntelliJIdea15/config/eval/idea15.evaluation.key
# for mac go to: /Users/username/Library/Preferences/IntelliJIdea2016.3/eval/idea163.evaluation.key

echo "resetting evalsprt in options.xml"
sed -i '/evlsprt/d' ~/.IntelliJIdea15/config/options/options.xml
# for mac go to: /Users/lzhoucs/Library/Preferences/IntelliJIdea2016.3/options/options.xml

fabiomsr

private val HEX_CHARS = "0123456789ABCDEF".toCharArray()

fun ByteArray.toHex() : String{
    val result = StringBuffer()

    forEach {
        val octet = it.toInt()
        val firstIndex = (octet and 0xF0).ushr(4)
        val secondIndex = octet and 0x0F
        result.append(HEX_CHARS[firstIndex])

jpillora

1. Go to https://developer.apple.com/downloads/index.action and search for "Command line tools" and choose the one for your Mac OSX

2. Go to http://brew.sh/ and enter the one-liner into the Terminal, you now have brew installed (a better Mac ports)

3. Install transmission-daemon with

   brew install transmission
   

4. Copy the startup config for launchctl with

   ln -sfv /usr/local/opt/transmission/*.plist ~/Library/LaunchAgents