lakshmankashyap

'use strict';

var elasticsearch = require('elasticsearch');

var log = console.log.bind(console);

var client = new elasticsearch.Client({
    host: 'localhost:9200',
    log: 'trace'
});

lakshmankashyap

#!/bin/bash

###################################
# Usage: sudo ./installer.sh [os] #
###################################

OS=$1;
UBUNTU="ubuntu";

#############

lakshmankashyap

const { connect, keyStores } = require("near-api-js");
const path = require("path");
const homedir = require("os").homedir();
const nacl = require("tweetnacl");
const sha256 = require("js-sha256");

const ACCOUNT_ID = "near-example.testnet";
const CREDENTIALS_DIR = ".near-credentials";

lakshmankashyap

// first install @solana "@solana/web3.js"
// yarn add @solana/web3.js

import {
  Connection,
  clusterApiUrl,
  Keypair,
  LAMPORTS_PER_SOL,
  PublicKey,
} from '@solana/web3.js';

lakshmankashyap

const web3 =  require('@solana/web3.js');
const splToken = require('@solana/spl-token');

(async () => {

    //create connection to devnet
    const connection = new web3.Connection(web3.clusterApiUrl("devnet"));

    //generate keypair and airdrop 1000000000 Lamports (1 SOL)
    const myKeypair = web3.Keypair.generate();

lakshmankashyap

'use strict'

const autocannon = require('autocannon');
let jsf = require('json-schema-faker');

let schema = {
    type: 'object',
    properties: {
        id: -1,
        Info: {

lakshmankashyap

Install Robo3t On Ubuntu 18.04

Download the package form Robo3t or using wget

wget https://download.robomongo.org/1.2.1/linux/robo3t-1.2.1-linux-x86_64-3e50a65.tar.gz

Extract here using

tar -xvzf robo3t-1.2.1-linux-x86_64-3e50a65.tar.gz

lakshmankashyap

Node.js interview questions

What is the architecture of node?

Application & Modules

This is where you write your application & installed modules live. Usually they are written in plain Javascript.

C/C++ bindings

lakshmankashyap

var start = new Date(2013, 5, 4)
var end = new Date(2013, 5, 6)
db.mention_stat.find({"verification": {"$gte": start, "$lt": end}})

lakshmankashyap

var mention_id = 620996;

db.mentionStats.aggregate([
    { $match: {'mention_id': mention_id}},
    { $group: {'_id': {
                    'year': { '$year': "$verification_date" },
                    'month': { '$month': "$verification_date" },
                    'day': { '$dayOfMonth': "$verification_date" }
                },
                'retweets': { $last: "$retweets" }}},