MainasuK

// If you use self-size cell with stack view or Auto Layout.
// Try this to change row height with animation

// Assume you set the content heightConstraint which group in your stack view
// Or other heightConstraint to make your cell self-size

func changeRowHeight(in tableView: UITableView, at indexPath: IndexPath, with height: CGFloat) {
    tableView.beginUpdates()
    
    // Change your cell heightConstraint height

MainasuK

//: The up to date code snippet (Xcode 8 beta 6) for List which comforms Collection — *Advanced Swift*

import UIKit

private enum ListNode<Element> {
    case end
    indirect case node(Element, next: ListNode<Element>)
    
    func cons(x: Element) -> ListNode<Element> {
        return .node(x, next: self)

MainasuK

    TableView<T> tableView;
    TableColumn<T, Boolean> booleanColumn;

    private void setupTableView() {
        tableView.setEditable(true);
    }

    private void setupTableViewColumn() {
        booleanColumn.setCellFactory(column -> new CheckBoxTableCell<>());
        booleanColumn.setCellValueFactory(cellData -> {

MainasuK

import java.io.*;
import java.math.BigInteger;
import java.security.SecureRandom;

/**
 * Created by MainasuK on 2017-5-9.
 */
public class RSA {

    // public key

MainasuK

import Vapor
import Glibc

extension Droplet {
    func setupRoutes() throws {
        get("hello") { req in
            var json = JSON()
            try json.set("hello", "world")
            return json
        }

MainasuK

import requests
import pdfkit
from bs4 import BeautifulSoup

url = 'https://developer.apple.com/library/content/documentation/NetworkingInternetWeb/Conceptual/SafariAppExtension_PG/index.html'
pdfkit.from_url(url, 'out.pdf')

MainasuK

import requests
import sys
from bs4 import BeautifulSoup
from sys import stdin

# usage:
# echo 'https://developer.apple.com/library/content/documentation/NetworkingInternetWeb/Conceptual/SafariAppExtension_PG/index.html' | python3 document_urls.py

# Use this script get link of pages for *one* apple programming guide document

MainasuK

  func startDownload() {
    let eoCategories = EONET.categories
    let downloadedEvents = eoCategories.flatMap { categories in
        return Observable.from(categories.map { category in
            EONET.events(forLast: 360, category: category)
        })
    }
    .merge(maxConcurrent: 2)
    let updatedCategories = eoCategories.flatMap { categories in

MainasuK

[
  {
    "address": "0x4E84E9e5fb0A972628Cf4568c403167EF1D40431",
    "symbol": "$FFC",
    "decimal": 18,
    "type": "default"
  },
  {
    "address": "0xa024e8057eec474a9b2356833707dd0579e26ef3",
    "symbol": "$FYX",

MainasuK

It often be helpful to be able to debug memory usage in Swift on Linux, for example to debug memory leaks.

This is a quick overview of how to generate a report of memory usage for your Swift app. This guide will only show you how to generate the report, not how to analyze it, it might be written up in a blog post later.

Install Valgrind

First we need to install a tool called Valgrind, which is used to trace memory usage.