manhpham90vn

#!/bin/bash

# https://developer.apple.com/documentation/bundleresources/privacy_manifest_files/describing_use_of_required_reason_api
searchTerms=(
    # File timestamp APIs
    "creationDate"
    "modificationDate"
    "fileModificationDate"
    "contentModificationDateKey"
    "creationDateKey"

manhpham90vn

PostgreSQL is Enough

• Simplify: move code into database functions
• Just Use Postgres for Everything
• PostgreSQL is the worlds’ best database
• Hacker News discussion

Background and Cron Jobs

• https://github.com/citusdata/pg_cron

manhpham90vn

#!/usr/bin/env bash

# Author: @11808s8 - Adriano
# Email: [email protected]
# Version: 1.1.0 - 07/04/2020
#
# @TODO: Refactor this, breaking parts into modules
# and include more comments/User feedbacks
#
# @TODO: Remove hardcoded credentials

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// for multiple requests
let isRefreshing = false;
let failedQueue = [];

const processQueue = (error, token = null) => {
  failedQueue.forEach(prom => {
    if (error) {
      prom.reject(error);
    } else {
      prom.resolve(token);

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import Foundation

go(println("in a thread"))

// buffered channel
var c = Chan(buffer:20)

// sending routing
go {
    while(true) {

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DROP TABLE IF EXISTS `carts`;
CREATE TABLE `carts` (
  `user_id` int NOT NULL,
  `food_id` int NOT NULL,
  `quantity` int NOT NULL,
  `status` int NOT NULL DEFAULT '1',
  `created_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
  `updated_at` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`user_id`,`food_id`),

manhpham90vn

Xcode deinit breakpoint for UIViewController

This breakpoint provides an easy way to track view controller deinitialization (deallocation) in UIKit-based applications. This can help finding memory leaks caused by retain cycles preventing view controllers from being deinitialized when dismissed or popped.

From Cédric Luthi's tweet in 2017:

Useful Xcode breakpoint. When you dismiss a controller and you don’t hear the pop sound (or see the log), you probably have a retain cycle.

manhpham90vn

import SwiftUI

fileprivate extension DateFormatter {
    static var month: DateFormatter {
        let formatter = DateFormatter()
        formatter.dateFormat = "MMMM"
        return formatter
    }

    static var monthAndYear: DateFormatter {

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// The MIT License (MIT)
//
// Copyright (c) 2017 Alexander Grebenyuk (github.com/kean).

import Foundation
import RxSwift
import RxCocoa


extension ObservableType {

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extension AnyObserver {
    static func create<E>(_ relay: PublishRelay<E>) -> AnyObserver<E> {
        return .init { event in
            guard case let .next(value) = event else { return }
            relay.accept(value)
        }
    }

    static func create<E>(_ relay: BehaviorRelay<E>) -> AnyObserver<E> {
        return .init { event in