phamd1989

{"event":"DISCOVER_QUESTION_CLICKED","category":"NEW_EVENT","label":"TOP","value":"null","meta":{"device_id":"1369eb5fba4241e2","version":9999,"platform":"Android","user_id":"39486045"},"data":{"question_text":"What is the best movie you have ever seen?","question_id":null,"bucket":"LIKE","FEED_TYPE":"TOP","current_fragment":"DiscoverFragment","current_activity":"MainActivity"},"timestamp":1454450393022}

phamd1989

public class Solution {
    public int longestValidParentheses(String s) {
        int maxLen = 0;
        // the index that right before the beginning of the current longest substring 
        int left = -1;
        
        Stack<Integer> stack = new Stack<Integer>();
        for (int i=0; i<s.length(); i++) {
            if (s.charAt(i) == '(') {
                stack.push(i);

phamd1989

[
  {
    "company_deals": [
      "\/steak-n-shake\/"
    ],
    "title": [
      "Buy 1, Get 1 Free Holiday Specialty Shakes "
    ],
    "type": "In-store Coupon",
    "image_url": [

phamd1989

import random

class Card(object):
    
    suits = {'C':'Club', 'D':'Diamond', 'H':'Heart', 'S':'Spade'}
    ranks = {1:'Ace', 11:'Jack', 12:'Queen', 13:'King'}
    
    def __init__(self, rank, suit):
        # go from 1 to 13
        self.rank = rank

phamd1989

# This is to solve the Lyft Programming Challenge
import math

def distance_between(p1, p2):
    """This calculates the linear distance between two points
    on a 2D coordinates system.
    
    Args:
        p1: the start point (a tuple of x,y coordinates)
        p2: the end point (a tuple of x,y coordinates)

phamd1989

1. Listen to changes in the model can be implemented through the initialize() by the following format: this.on('change', callback_function). Listen to changes of a specific attribute can be done through this way too (just add in what attribute after change: change -> change:attr_name)

2. validation through Model.validate()

3. View does not contain the HTML markup. It contains the logic behind the presentation of the model's data to the user.

4. A view’s render() method can be bound to a model’s change() event, enabling the view to instantly reflect model changes without requiring a full page refresh.

5. el - a reference to the DOM element which every view has