Omkaragrawal

class Rectangle {
    constructor(w, h) {
        this.w = w;
        this.h = h;
    }
}

/*
 *  Write code that adds an 'area' method to the Rectangle class' prototype
 */

Omkaragrawal

class Rectangle {
    constructor(w, h) {
        this.w = w;
        this.h = h;
    }
}

/*
 *  Write code that adds an 'area' method to the Rectangle class' prototype
 */

Omkaragrawal

Link to problem Statement

Medium Article to understand the problem and the solution.

Below are two files:

• Problematic-code.js : This was the code that I had submitted but was not working.
• Solution.js : This is the actual working code that I have submitted.

Omkaragrawal

for Stackoverflow

A Pen by OMKAR AGRAWAL on CodePen.

License.

Omkaragrawal

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

Omkaragrawal

import pandas as pd
import numpy as np
import seaborn as sns
sns.set(style='white')
import matplotlib.pyplot as plt
from sklearn.preprocessing import LabelEncoder
from sklearn.cross_validation import train_test_split
from sklearn.preprocessing import StandardScaler
from sklearn.ensemble import RandomForestClassifier
from sklearn.model_selection import KFold

Omkaragrawal

import re

import tweepy

from tweepy import OAuthHandler

from textblob import TextBlob

 

Omkaragrawal

var express = require('express'),
    passport = require('passport'),
    TwitterStrategy = require('passport-twitter').Strategy,
    ensureLoggedIn = require('connect-ensure-login').ensureLoggedIn,
    app = express();

app.use(express.static(__dirname + '/public'));
app.use(express.cookieParser());
app.use(express.session({ secret: 'keyboard cat' }));
app.use(passport.initialize());

Omkaragrawal

Authentication with an Express API and Postgres

Setting Up

Let's make sure our Express app has the required base modules:

# within root of API
npm install --save express pg knex bcrypt
npm install --save-dev nodemon

Omkaragrawal

print["Hello World this is my first line of code in Python."]