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@jkereako
jkereako / ReCAPTCHAViewController.swift
Created September 8, 2020 13:15
ReCAPTCHA v2 in Swift
import UIKit
import WebKit
final class ReCAPTCHAViewController: UIViewController {
private var webView: WKWebView!
private let viewModel: ReCAPTCHAViewModel
init(viewModel: ReCAPTCHAViewModel) {
self.viewModel = viewModel
@maestrow
maestrow / post.md
Last active June 25, 2024 17:17
Теория категорий в программировании
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

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