tankala’s gists

tankala / PassAVariableToCallbackFunction.js

Created August 5, 2018 15:12

How to pass a Variable or Argument to a callback function in Node.js

	var mainFunction = function(callback) {
	//Did something
	console.log("In Main Function");
	callback();
	}

	var callbackFunction = function() {
	console.log('Variable: ' + this.variable);
	console.log("In Callback Function");
	}

tankala / UpdateAddressOfAUser.js

Created August 5, 2018 15:24

Updating user address with the passing a variable to callback function concept using bind()

	var mysql = require('mysql');

	var con = mysql.createConnection({
	host: "localhost",
	user: "root",
	password: "root",
	database: "Employee"
	});

	con.connect(function (err) {

tankala / printDataBetweenTokenRangeOfCassandrTable.js

Created September 8, 2018 15:13

Finding minimum and maximum token range in a Cassandra table and Printing data between certain range.

	const cassandra = require('cassandra-driver');
	const client = new cassandra.Client({contactPoints: ['127.0.0.1'], keyspace: 'movie_lens'});
	const bignum = require('bignum');

	//Finding minimum and maximum token range in a Cassandra table
	client.execute('select MIN(token(movie_id)), MAX(token(movie_id)) from movies;',
	function(err, result) {
	let minToken = result.rows[0]['system.min(system.token(movie_id))'];
	let maxToken = result.rows[0]['system.max(system.token(movie_id))'];
	console.log("Minimum token: " + minToken);

tankala / CartPoleGameUnderstanding.py

Last active October 19, 2018 11:26

First time we want to understand exactly what happens with CartPole game this code snippet will help you

	import gym
	env = gym.make('CartPole-v1')
	env.reset()
	for step_index in range(1000):
	env.render()
	action = env.action_space.sample()
	observation, reward, done, info = env.step(action)
	print("Step {}:".format(step_index))
	print("action: {}".format(action))
	print("observation: {}".format(observation))

tankala / CartPoleDataPreperation.py

Last active January 9, 2019 20:10

For preparing data of CartPole game which we need to use for our deep learning model training.

	def model_data_preparation():
	training_data = []
	accepted_scores = []
	for game_index in range(intial_games):
	score = 0
	game_memory = []
	previous_observation = []
	for step_index in range(goal_steps):
	action = random.randrange(0, 2)
	observation, reward, done, info = env.step(action)

tankala / CartPoleGamePlayWithDeepLearning.py

Last active October 19, 2018 12:51

With deep learning model playing CartPole game

	scores = []
	choices = []
	for each_game in range(100):
	score = 0
	prev_obs = []
	for step_index in range(goal_steps):
	env.render()
	if len(prev_obs)==0:
	action = random.randrange(0,2)
	else:

tankala / MountainCarDataPreperation.py

Last active October 19, 2018 16:47

For preparing data of MountainCar game which we need to use for our deep learning model training.

	def model_data_preparation():
	training_data = []
	accepted_scores = []
	for game_index in range(intial_games):
	score = 0
	game_memory = []
	previous_observation = []
	for step_index in range(goal_steps):
	action = random.randrange(0, 3)
	observation, reward, done, info = env.step(action)

tankala / animalSoundsFeeder.js

Created January 9, 2019 07:22

Node.js Example for Redis Hashes

	const readline = require('readline');
	const redisClient = require('redis').createClient();

	const userInteractor = readline.createInterface({
	input: process.stdin,
	output: process.stdout
	});

	var initiateUserInteraction = async function() {
	while(true) {

tankala / asyncQueueExample.js

Created February 11, 2019 07:35

Async Queue Example

	const async = require('async');

	var processQueue = function (message, callback) {
	setTimeout(function() {
	console.log(`Task ${message} completed`);
	callback();
	}, 500);
	}

	var queue = async.queue(processQueue, 3);

tankala / asyncQueueExample.js

Last active February 11, 2019 07:40

Async Queue Example

	const async = require('async');

	//Code for processing the task
	var processQueue = function (message, callback) {
	setTimeout(function() {
	console.log(`Task ${message} completed`);
	callback();
	}, 500);
	}

Tankala Ashok tankala