hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

sag333ar

for f in *.png
do	
	# Process to get File Name & 2x, 3x file names
	xNAME=`echo "$f" | cut -d'.' -f1`
	cp "$f" "$xNAME@3x.png"
	cp "$f" "$xNAME@2x.png"

	# Set proper resolution to original file
	sips -s dpiHeight 72.0 -s dpiWidth 72.0 "$f"

mstfldmr

from matplotlib import pyplot as plt
import cv2

img = cv2.imread('/Users/mustafa/test.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

plt.imshow(gray)
plt.title('my picture')
plt.show()

miguelfermin

//
//  ViewController.swift
//  PageViewController
//
//  Created by Miguel Fermin on 5/8/17.
//  Copyright © 2017 MAF Software LLC. All rights reserved.
//

import UIKit

fethica

public struct Units {
  
  public let bytes: Int64
  
  public var kilobytes: Double {
    return Double(bytes) / 1_024
  }
  
  public var megabytes: Double {
    return kilobytes / 1_024

iKenndac

Hello,

I attended WWDC this year, and overall it was a fantastic experience. I would, however, like to give some feedback on one particular aspect of the conference.

Before I begin, I understand that it would be easy to brush off my feedback as coming from just some grumpy English guy, but I genuinely believe this is important feedback. Please do read until the end.

I would like to ask that the cheering, whooping, clapping and hollering by conference staff is toned down.

I'm a person that would describe myself as "slightly introverted". I cannot begin to describe how deeply uncomfortable it was to walk into the registration room on Sunday to multiple employees cheering and clapping at me, trying to give me high fives. I understand the want to make people excited, but this needs to have its limits. During the conference, I got cheered and high-fived pretty much the entire week for things like:

mecid

//
//  BottomSheetView.swift
//
//  Created by Majid Jabrayilov
//  Copyright © 2019 Majid Jabrayilov. All rights reserved.
//
import SwiftUI

fileprivate enum Constants {
    static let radius: CGFloat = 16

Tprezioso

enum ScreenSize {
    static let width = UIScreen.main.bounds.size.width
    static let height = UIScreen.main.bounds.size.height
    static let maxLength = max(ScreenSize.width, ScreenSize.height)
    static let minLength = min(ScreenSize.width, ScreenSize.height)
}

enum DeviceType {
    static let idiom = UIDevice.current.userInterfaceIdiom
    static let nativeScale = UIScreen.main.nativeScale

DreamingInBinary

# A Best in Class Checklist
A boiled down checklist adapted from this [post](https://www.swiftjectivec.com/a-best-in-class-app/), created by @jordanmorgan10.

> To use this, create a Github Issue in your own repo, and simply copy and paste this text.

## iOS Core Technology
_Things any iOS app can benefit from_

- [ ] iCloud Sync
- [ ] Focus Filter Support

spencerwooo

// Variables used by Scriptable.
// These must be at the very top of the file. Do not edit.
// icon-color: orange; icon-glyph: quote-right;

// Change these to your usernames!
const user = "spencer"

const jike = "4DDA0425-FB41-4188-89E4-952CA15E3C5E"
const telegram = "realSpencerWoo"
const github = "spencerwooo"