ostholz

render :edit
render action: :edit
render "edit"
render "edit.html.erb"
render action: "edit"
render action: "edit.html.erb"
render "books/edit"
render "books/edit.html.erb"
render template: "books/edit"
render template: "books/edit.html.erb"

ostholz

__weak __typeof(self) weakSelf = self;

[self doSomeThingWithBlock:^(void) {
  if (weakSelf) {
    __strong __typeof(weakSelf) strongSelf = weakSelf;
    strongSelf.someProperty = someValue;
    [strongSelf performSomeMethod];
  }
}];

ostholz

###show all envirement variables
  xcodebuild -workspace appname.xcworkspace -scheme scheme -showBuildSettings
  xcodebuild -project appname.xcproj -target target -showBuildSettings

ostholz

// copy from https://www.craftappco.com/blog/2018/5/30/simple-throttling-in-swift
class Throttler {

    private var workItem: DispatchWorkItem = DispatchWorkItem(block: {})
    private var previousRun: Date = Date.distantPast
    private let queue: DispatchQueue
    private let minimumDelay: TimeInterval

    init(minimumDelay: TimeInterval, queue: DispatchQueue = DispatchQueue.main) {
        self.minimumDelay = minimumDelay

ostholz

extension UIView {
    
    /**
     * Set aspect ratio for self
     *
     * Examples: there is a view `v`
     *     v.aspectRatio(ratio: 2.0)
     */
    public func aspectRatio(ratio: CGFloat)  {
        self.translatesAutoresizingMaskIntoConstraints = false

ostholz

//
//  Logger.swift
//
//  Created by on 24.01.20.
//

import Foundation
import os.log

public struct Logger {

ostholz

### Print swift object at address
  `e -l swift -O -- 0xaddress`

### print ObjectivC object at address
`e -l objc -O -- 0xaddress`