QuadFlask

겁나 간단한 수준의 정규식밖에 못써서 이렇게 했는데;;;

function isValidIP(str) {
  var r = /^([\d]{1,})\.([\d]{1,})\.([\d]{1,})\.([\d]{1,})$/g;
  var result = r.exec(str);
  if (result&&result.length==5)
    return result.slice(1).every(s=>(s.length==1?true:s[0]!='0') && 0<=+s && +s<=255);
  return false;
}

QuadFlask

간단한 암/복호화

message: my secret code i want to secure
key:     passwordpasswordpasswordpasswor

var alphabet = 'abcdefghijklmnopqrstuvwxyz';
var key = 'password';

// creates a cipher helper with each letter substituted

QuadFlask

http://www.codewars.com/kata/52b7ed099cdc285c300001cd/train/javascript

겹치는(overlap) 인터벌은 합치고 모든 인터벌의 길이의 합을 출력

sumIntervals( [
   [1,2],
   [6, 10],
   [11, 15]
] ); //=> returns 9

QuadFlask

겁나게 긴 숫자 덧셈기를 만드는 문제

최대한? 펑셔널하게 해보고 싶었는데 오히려 코드가 길어진듯...

MySolution

function add(n1, n2) {
	if (n1.length < n2.length) {
		var t = n1;
 n1 = n2;

QuadFlask

문자열

1 3 +

을 계산

function calc(expr) {
  if (!expr) return 0;

QuadFlask

이미 isArray 가 존재함...;;

뭔가 너무 어렵게 풀어낸듯?

My Solution

Array.prototype.isArray =()=> toString.call(this) == '[object Array]';
Array.prototype.sameStructureAs = function (other) {
  return this.length == other.length?
 this.map((a,i)=> {

QuadFlask

https://danielmiessler.com/study/vim/

Verbs

Verbs are the actions we take, and they can be performed on nouns. Here are some examples:

d: delete

c: change

QuadFlask

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

QuadFlask

Pete, the baker (part 2)

재료를 모두 사용할 수 있는 갯수에 대한 부족분을 계산(? 말로 적으니까 이상한데?)

var recipe = {flour: 200, eggs: 1, sugar: 100};

getMissingIngredients(recipe, {flour: 50, eggs: 1}); // must return {flour: 150, sugar: 100}
getMissingIngredients(recipe, {}); // must return {flour: 200, eggs: 1, sugar: 100}
getMissingIngredients(recipe, {flour: 500, sugar: 200}); // must return {flour: 100, eggs: 3, sugar: 100}

QuadFlask

달팽이 모양 배열 한줄로 뽑기

array = [[1,2,3],
         [8,9,4],
         [7,6,5]]
snail(array) #=> [1,2,3,4,5,6,7,8,9]