mfaani

// https://www.hackingwithswift.com/articles/119/codable-cheat-sheet
import Foundation 

struct Packet: Decodable {
    var value: Int
    var array: [Packet]?    
}

enum Lett {
    indirect case a(m: M) 

mfaani

Great video on stdin vs stdout: https://www.youtube.com/watch?v=OsErpB0-mWY

stdin

As a standard your input usually comes from the keyboard. Ex cat file.txt. <- here you're passing file.txt as a parameter.

However you can do cat < $file_name i.e. make the input to the cat command a variable.

Both cat file.txt & cat < file.txt achieve the same, but through different mechanics. < is passing something as an input.

I suppose it's because the cat command has abilities to handle file names as arguments and through stdin

mfaani

1. Learned how to search for files in VSC. Need to use cmmd+P
2. The config.js is king
3. For the config.js stuff to come to an affect, you need to do gatsby develop again.
4. gatsby build doesn't work locally. Not sure what it does. ?????
5. The location of media assets are under the static/media not sure why it's in there. For more see https://www.gatsbyjs.com/docs/how-to/images-and-media/static-folder/

mfaani

class Solution {
    
    var remaining : [String: Int] = ["(": 0, "[": 0, "{": 0]
    func isValid(_ s: String) -> Bool {
        let validChars = ["(", ")", "[", "]","{", "}"]
        let opens = ["[", "(", "{"]
        let closes = ["]", ")", "}"]
        
        for c in s {
            let c = String(c)

mfaani

class Solution {
   func removeKdigits(_ num: String, _ k: Int) -> String {
        var drops = k
        var maxStack: [Character] = []
       
       for digit in num {
           // only if there is something bigger in the stack to drop...
           while drops > 0 && !maxStack.isEmpty && maxStack.last! > digit {
               maxStack.popLast()
               drops -= 1 

mfaani

• I've read and understood the CONTRIBUTING guidelines and have done my best effort to follow.

• Authors: @prohoney, @AliSoftware
• Date: 1 Jan, 2021

Motivation

Starting from December 8, 2020, Apple has required new apps and app updates to include App privacy details on the App Store. App owners have to go through every pod and all its dependency's readmes or if nothing is revealed then reach out to pod creators to just figure out what information the pod collects. The current process is not transparent nor easy.

Proposal

mfaani

import Foundation

class Foo {
    func testDispatchItems() {
        let queue = DispatchQueue.global()

        var item: DispatchWorkItem?

        item = DispatchWorkItem { [weak self] in
            for i in 0 ... 10 {

mfaani

import Foundation

//Cancel without setting `item` to `nil`
class Foo {
    func testDispatchItems() {
        let queue = DispatchQueue.global()

        var item: DispatchWorkItem?

        item = DispatchWorkItem { [weak self] in

mfaani

// https://stackoverflow.com/questions/55446713/true-false-question-about-swift-subclass-superclass
class Person {

    var age : Int?
    
    func incrementAge() {
        guard age != nil else {
            age = 1
            return
        }

mfaani

class C {
    lazy var x: () -> Void = {
        return { print("hi") }
    }()
    
    lazy var y: (Int) -> Void = { // `input in` shouldn't be written here!
        return { input in
            print(input)
        }
    }()