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Top 35 Self Developers on 26 May 2019 on Toogit. Self Developers on Toogit are highly skilled and talented. Hiring Self Developers on Toogit is quite affordable as compared to a full-time employee and you can save upto 50% in business cost by hiring Self Developers on Toogit. Hiring Self Developers on Toogit is 100% safe as the money is released to the Freelancer only after you are 100% satisfied with the work.

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Nitin DhageSoftware QA tester, India
$12 /hr
0 Years Exp.
0 Followers
• I am 7+ years experienced, detail-oriented Software QA Tester with a proven expertise in Manual Testing for Desktop Applications, Web Servers, and w...Read More
Tripti JaiswalBI Consultant, India
$35 /hr
6 Years Exp.
0 Followers
Working in the field of Analytics and Business Intelligence with proficiency as a self-motivated and goal oriented professional specializing in SAS,Or...Read More
Mohammed MuzammilConsultant, India
$5 /hr
6 Years Exp.
0 Followers
Iam certified sas programmer and have 6+ years of experience in analytics and data management
Vivek KumarDATA ANALYST, India
$5 /hr
2 Years Exp.
0 Followers
2 year work experience, Passout from Tier-1 university, Highly skilled in python, SQL , machine learning,deep learning, Natural language processing &a...Read More
Ankit SudaData Visualization and Analytics Consultant, India
$15 /hr
7 Years Exp.
0 Followers
I am currently working for MNC in BFSI domain. I am highly skilled at Data Visualization and Analytics. I am a Tableau Architect and Advanced Excel an...Read More
My Expertise lay in analysing the data from multiple industries and provide meaning full insights for business which helps business for all decisions...Read More
Syed Jamal Ud DinComputer Scientist, Pakistan
$3 /hr
2 Years Exp.
0 Followers
I am a Computer scientist with expertise in programming (specially object oriented programming) and Data science Concepts. I am a good c++ and python...Read More
Sarmistha MukherjeeData Analyst, India
$9 /hr
6 Years Exp.
0 Followers
I have 4+years of experience in Data Entry, Excel, VBA, Python . Here to solve Data Analysis problems .
Grace RadhuberData Analyst, United States
$15 /hr
7 Years Exp.
0 Followers
Data Analyst with Masters in Business Information Systems from Virginia Tech
Arun SankarSenior software tester, India
$17 /hr
7 Years Exp.
0 Followers
I'm a Senior software tester with 8+ years of exp
Jyoti ChopraManual Tester, India
$3 /hr
2 Years Exp.
0 Followers
I am 2+ years experienced QA professional .
Divya KrishnarajBusiness analyst, testing, India
$9 /hr
5 Years Exp.
0 Followers
I have 5+ years of experience in Manual testing, user acceptance testing, application development and business analysis
Bhupesh SingalBusiness Analyst Advisor, India
$10 /hr
14 Years Exp.
0 Followers
I am oracle certified, and automation expert
Ravindrakanth ReddyDot Net Developer, India
$9 /hr
0 Years Exp.
0 Followers
I have 1+ Year experience in .Net .
Jaykumar MakatiFront Office Lead, India
$3 /hr
6 Years Exp.
0 Followers
I have more than 6 Years of IT experience within Hewlett-Packard Global Soft Pvt Ltd from July 2011 till Feb 2018, which also includes 1.5 years of cl...Read More
Jena RamsaranMs Access automation, United States
$30 /hr
12 Years Exp.
0 Followers
I am able to use Access and Excel to automate processes, integrate into other software including Quickbooks and web, build and move files, communicate...Read More
Ali Naveed Senior Database Architecture , India
$29 /hr
12 Years Exp.
0 Followers
I have 12+ years of experience in the IT industry. Overall 12.5 years of experience as an Oracle SQL/PLSQL Developer and Oracle + MSSQL DBA. Experie...Read More
Venkat Full stack developer , India
$12 /hr
8 Years Exp.
0 Followers
I am certified java developer having 8+ years of experience.
Mostafa WardiFull Stack Developer, Morocco
$20 /hr
9 Years Exp.
0 Followers
Full Stack developer, 9 years of experience in IT Consulting, I worked with Several companies, Passionate by learning and finding solutions. -JS Fun-
Raazia Tariq Software Engineer, Pakistan
$12 /hr
1 Years Exp.
0 Followers
I am an software engineer with working experience on android development, PHP, Java Spring Boot, firebase and etc.
Malcolm MillSystems and tools developer, United Kingdom
$12 /hr
67 Years Exp.
0 Followers
I am a self-taught web/database developer with an academic background in law and languages. I develop full stack solutions using Ruby on Rails; write...Read More
Narendar data entry operator, India
$2 /hr
1 Years Exp.
0 Followers
i have good experience in ms office i have 2 yrs experience as data entry operator
Vinay Saraf Excel Yourself, India
$9 /hr
8 Years Exp.
0 Followers
I am a Chartered Accountant having more than 5 years of experience in the field of Audit, Financial Reporting, Financial Modelling, Valuation, Taxatio...Read More
Asish PradhanTech lead, India
$20 /hr
8 Years Exp.
0 Followers
Having 8 years experience in java development
Phumulani NdebeleETL Developer, South Africa
$18 /hr
6 Years Exp.
0 Followers
I'm a certified BI SQL Developer with 7 years of experience, currently and ETL Developer Consultant for Discovery. My passion for Data and Coding...Read More
Manju B SApplication support , India
$9 /hr
3 Years Exp.
0 Followers
I m having 3.2 years of experience in application and production support for KOTAK Mahindra Bank
sql Unix 
Pooja IT Analyst, India
$52 /hr
5 Years Exp.
0 Followers
I have worked with TCS for 5 years as a Business Analyst..Developer..I want to work on basic SQL queries..
Arun Data Analyst, India
$3 /hr
9 Years Exp.
0 Followers
I'm a data analyst with 9+ years experience in data cleansing and data mining with Excel and SQL. Have worked extensively in automation of excel...Read More
Raviteja Damerasenior software engineer, India
$4 /hr
5 Years Exp.
0 Followers
I am a Certified oracle plsql developer having 5+ years of experience in plsql developement and maintenance projects.
Ashish ParmarBusiness Analyst, India
$9 /hr
2 Years Exp.
0 Followers
Business analyst
Gurusiddesh KattiSoftware Engineer, India
$10 /hr
1 Years Exp.
0 Followers
I am a python and ASP.NET developer with 1 year of solid experience in developing and maintaining web applications
Keerthana ViyasarayanFreelance Developer, Czech Republic
$20 /hr
8 Years Exp.
0 Followers
Masters in Computer Science Expertise includes: End to end development, DOTnet, Java, Python, PHP, SQL, Bigdata
Nikhil Software Developer, India
$18 /hr
6 Years Exp.
0 Followers
I am a professional developer from Pune, India. I have deep specialization in development on the base of Microsoft .NET stack of technologies. Over...Read More
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Articles Related To Self


A chatbot is an artificial intelligence powered piece of software in a device, application, web site or alternative networks that try to complete consumer’s needs and then assist them to perform a selected task. Now a days almost every company has a chatbot deployed to interact with the users.

 

Chatbots are often used in many departments, businesses and every environment. They are artificial narrow intelligence (ANI). Chatbots only do a restricted quantity of task i.e. as per their design. However, these Chatbots make our lives easier and convenient. The trend of Chatbots is growing rapidly between businesses and entrepreneurs, and are willing to bring chatbots to their sites. You might also produce it yourself using Python.

 

How do chatbots work?

There are broadly two variants of chatbotsRule-Based and Self learning.

  1. In a Rule-based approach, a bot answers questions based on some rules on that it is trained on. The rules outlined could be very easy to very complicated. The bots will handle easy queries but fail to manage complicated ones.
  2. The Self learning bots are those that use some Machine Learning-based approaches and are positively a lot of economical than rule-based bots. These bots may be of additional two types: Retrieval based or Generative.
    1. In retrieval-based models, Chatbot uses the message and context of conversation for selecting the best response from a predefined list of bot messages.
    2. Generative bots can generate the answers and not always reply with one of the answers from a set of answers. This makes them more intelligent as they take word by word from the query and generates the answers.

 

Building a chatbot using Python

NLP:

The field of study that focuses on the interactions between human language and computers is called Natural Language Processing. NLP is a way for computers to analyze, understand, and derive meaning from human language in a smart and useful way. However, if you are new to NLP, you can read Natural Language Processing in Python.

 

NLTK:

NLTK (Natural Language Toolkit) is a leading platform for building Python programs to work with human language data. It provides easy-to-use lexical resources such as WordNet, along with a suite of text processing libraries.

 

Importing necessary libraries

import nltk 

import numpy as np 

import random 

import string # to process standard python strings

 

Copy the content in text file named ‘chatbot.txt’, read in the text file and convert the entire file content into a list of sentences and a list of words for further pre-processing.

 

f=open('chatbot.txt','r',errors = 'ignore')

raw=f.read()

raw=raw.lower()# converts to lowercase

nltk.download('punkt') # first-time use only

nltk.download('wordnet') # first-time use only

sent_tokens = nltk.sent_tokenize(raw)# converts to list of sentences 

word_tokens = nltk.word_tokenize(raw)# converts to list of words

 

Pre-processing the raw text

We shall now define a function called LemTokens which will take as input the tokens and return normalized tokens.

 

lemmer = nltk.stem.WordNetLemmatizer()

#WordNet is a semantically-oriented dictionary of English included in NLTK.

def LemTokens(tokens):     

return [lemmer.lemmatize(token) for token in tokens]

remove_punct_dict = dict((ord(punct), None) for punct in string.punctuation) 

def LemNormalize(text):     

return LemTokens(nltk.word_tokenize(text.lower().translate(remove_punct_dict)))

 

Keyword matching

Define a function for greeting by bot i.e. if user’s input is greeting, the bot shall return a greeting response.

GREETING_INPUTS = ("hello", "hi", "greetings", "sup", "what's up","hey",)

GREETING_RESPONSES = ["hi", "hey", "*nods*", "hi there", "hello", "I am glad! You are talking to me"]

def greeting(sentence):

for word in sentence.split():

if word.lower() in GREETING_INPUTS:

return random.choice(GREETING_RESPONSES)

 

Generate responses

To generate a response from our bot for input queries, the concept of document similarity is used. Therefore, we start by importing necessary modules.

From scikit learn library, import the TFidf vector to convert a collection of raw documents to a matrix of TF-IDF features

from sklearn.feature_extraction.text import TfidfVectorizer

Also, import cosine similarity module from scikit learn library

from sklearn.metrics.pairwise import cosine_similarity

This will be used to find the similarity between words entered by the user and therefore the words within the corpus. This can be the simplest possible implementation of a chatbot.

Define a function response that searches the user’s vocalization for one or more known keywords and returns one of several possible responses. If it doesn’t find the input matching any of the keywords, it returns a response: “I’m sorry! I don’t understand you”

 

def response(user_response):

robo_response=''

sent_tokens.append(user_response)

TfidfVec = TfidfVectorizer(tokenizer=LemNormalize, stop_words='english')

tfidf = TfidfVec.fit_transform(sent_tokens)

vals = cosine_similarity(tfidf[-1], tfidf)

idx=vals.argsort()[0][-2]

flat = vals.flatten()

flat.sort()

req_tfidf = flat[-2]

if(req_tfidf==0):

robo_response=robo_response+"I am sorry! I don't understand you"

return robo_response

else:  robo_response = robo_response+sent_tokens[idx]

return robo_response

 

I have tried to explain in simple steps how you can build your own chatbot using NLTK and of course it’s not an intelligent one.

I hope you guys have enjoyed reading.

Happy Learning!!!

As you know, JavaScript is the top programming language in the world, the language of the web, of mobile hybrid apps (like PhoneGap or Appcelerator), of the server side (like NodeJS or Wakanda) and has many other implementations. It’s also the starting point for many new developers to the world of programming, as it can be used to display a simple alert in the web browser but also to control a robot (using nodebot, or nodruino). The developers who master JavaScript and write organized and performant code have become the most sought after in the job market.

 

In this article, I’ll share a set of JavaScript tips, tricks and best practices that should be known by all JavaScript developers regardless of their browser/engine or the SSJS (Server Side JavaScript) interpreter.

 

Don’t forget var” keyword when assigning a variable’s value for the first time.

Assignment to an undeclared variable automatically results in a global variable being created. Avoid global variables.

Use “===” instead of “==”

The == (or !=) operator performs an automatic type conversion if needed. The === (or !==) operator will not perform any conversion. It compares the value and the type, which could be considered faster than ==

[10] === 10    // is false

[10]  == 10    // is true

'10' == 10     // is true

'10' === 10    // is false

 []   == 0     // is true

 [] ===  0     // is false

 '' == false   // is true but true == "a" is false

 '' ===   false // is false 

undefined, null, 0, false, NaN, '' (empty string) are all falsy.

 

Use Semicolons for line termination

The use of semi-colons for line termination is a good practice. You won’t be warned if you forget it, because in most cases it will be inserted by the JavaScript parser. For more details about why you should use semi-colons.

 

Create an object constructor

function Person(firstName, lastName){

    this.firstName =  firstName;

    this.lastName = lastName;        

}  

var Khalid = new Person("Khalid", "Ansari");

 

Be careful when using typeof, instanceof and constructor.

typeof: a JavaScript unary operator used to return a string that represents the primitive type of a variable, don’t forget that typeof null will return “object”, and for the majority of object types (Array, Date, and others) will return also “object”.

constructor: is a property of the internal prototype property, which could be overridden by code.

 

instanceof: is another JavaScript operator that check in all the prototypes chain the constructor it returns true if it’s found and false if not.

 

var arr = ["a", "b", "c"];

typeof arr;   // return "object" 

arr  instanceof Array // true

arr.constructor();  //[]

 

Define a Self-calling Function

This is often called a Self-Invoked Anonymous Function or Immediately Invoked Function Expression (IIFE). It is a function that executes automatically when you create it, If you want to use this function you can write in the following way: 

 

(function(){

    // some private code that will be executed automatically

})();  

(function(p,q){

    var r = p+q;

    return r;

})(40,50);

 

Get a random item from an array

var items_array = [12, 548 , 'a' , 2 , 5478 , 'toogit' , 8852, , 'freelance' , 2145 , 119];

var  randomItem = items[Math.floor(Math.random() * items.length)];

 

Get a random number in a specific range

This code snippet can be useful when trying to generate fake data for testing purposes, such as a salary between min and max.

var x = Math.floor(Math.random() * (max - min + 1)) + min;

 

Generate an array of numbers with numbers from 0 to max

var numbersArray = [] , max = 100;

for( var i=1; numbersArray.push(i++) < max;);  // numbers = [1,2,3 ... 100] 

 

Generate a random set of alphanumeric characters

function generateRandomAlphaNum(len) {

    var rdmString = "";

    for( ; rdmString.length < len; rdmString  += Math.random().toString(36).substr(2));

    return  rdmString.substr(0, len);

}

 

Shuffle an array of numbers

var numbers = [5, 458 , 120 , -215 , 228 , 400 , 122205, -85411];

numbers = numbers.sort(function(){ return Math.random() - 0.5});

 

A better option could be to implement a random sort order by code (e.g. : Fisher-Yates shuffle), than using the native sort JavaScript function

 

A string trim function

The classic trim function of Java, C#, PHP and many other language that remove whitespace from a string doesn’t exist in JavaScript, so we could add it to the String object.

String.prototype.trim = function(){return this.replace(/^s+|s+$/g, "");};  

A native implementation of the trim() function is available in the recent JavaScript engines.

 

Append an array to another array

var array1 = [12 , "foo" , {name "Joe"} , -2458];

var array2 = ["Doe" , 555 , 100];

Array.prototype.push.apply(array1, array2);

 

Transform the arguments object into an array

var argArray = Array.prototype.slice.call(arguments);

 

Verify that a given argument is a number

function isNumber(n){

    return !isNaN(parseFloat(n)) && isFinite(n);

}

 

Verify that a given argument is an array

function isArray(obj){

    return Object.prototype.toString.call(obj) === '[object Array]' ;

}

Note that if the toString() method is overridden, you will not get the expected result using this trick.

Or Use..

Array.isArray(obj); // its a new Array method

You could also use instanceofif you are not working with multiple frames. However, if you have many contexts, you will get a wrong result.

var myFrame = document.createElement('iframe');

document.body.appendChild(myFrame);

var myArray = window.frames[window.frames.length-1].Array;

var arr = new myArray(a,b,10); // [a,b,10]  

// instanceof will not work correctly, myArray loses his constructor 

// constructor is not shared between frames

arr instanceof Array; // false

 

Get the max or the min in an array of numbers

var  numbers = [5, 458 , 120 , -215 , 228 , 400 , 122205, -85411]; 

var maxInNumbers = Math.max.apply(Math, numbers); 

var minInNumbers = Math.min.apply(Math, numbers);

 

Empty an array

var myArray = [12 , 222 , 1000 ];  

myArray.length = 0; // myArray will be equal to [].

 

Don’t use delete to remove an item from array

Use splice instead of using delete to delete an item from an array. Using delete replaces the item with undefined instead of the removing it from the array.

Instead of…

var items = [12, 548 ,'a' , 2 , 5478 , 'foo' , 8852, , 'Doe' ,2154 , 119 ]; 

items.length; // return 11 

delete items[3]; // return true 

items.length; // return 11 

Use

var items = [12, 548 ,'a' , 2 , 5478 , 'foo' , 8852, , 'Doe' ,2154 , 119 ]; 

items.length; // return 11 

items.splice(3,1) ; 

items.length; // return 10 

 

Clearing or truncating an array

An easy way of clearing or truncating an array without reassigning it is by changing its length property value:

const arr = [11,22,33,44,55,66];

// truncanting

arr.length = 3;

console.log(arr); //=> [11, 22, 33]

// clearing

arr.length = 0;

console.log(arr); //=> []

console.log(arr[2]); //=> undefined

 

Simulating named parameters with object destructuring

Chances are high that you’re already using configuration objects when you need to pass a variable set of options to some function, like this:

doSomething({ foo: 'Hello', bar: 'Toogit!', baz: 42 });

function doSomething(config) {  

const foo = config.foo !== undefined ? config.foo : 'Hi';  const bar = config.bar !== undefined ? config.bar : 'Me!';  const baz = config.baz !== undefined ? config.baz : 13;  // ...

}

This is an old but effective pattern, which tries to simulate named parameters in JavaScript. The function calling looks fine. On the other hand, the config object handling logic is unnecessarily verbose. With ES2015 object destructuring, you can circumvent this downside:

function doSomething({ foo = 'Hello', bar = 'Toogit!', baz = 13 }) {  // ...}

And if you need to make the config object optional, it’s very simple, too:

function doSomething({ foo = 'Hello', bar = 'Toogit!', baz = 13 } = {}) {  // ...}

 

Object destructuring for array items

Assign array items to individual variables with object destructuring:

const csvFileLine = '1997,John Doe,US,john@doe.com,New York';const { 2: country, 4: state } = csvFileLine.split(',');

 

 

What is the difference between Java and JavaScript?

 

These are two different programming languages.

 

Javascript is a language that has gained tremendous popularity as a language on the web browsers to create dynamic and interactive web pages.

 

Java is a language that has got a similar popularity when you build a “backend” system, which is a fancy word for “almost anything”.

 

Despite the common prefix, they are not related; there creators are different and so are their origin stories (as highlighted by other answers). 

- JavaScript is a genius marketing scam that polluted the world of browsers exceptionally well. The browser reads JavaScript’s code line by line and executes it.

 

- Java is a general purpose language that is used almost everywhere, from Android mobile apps and cryptography to OS and cloud computing. Java’s code is stored in bytecoded format and then gets JIT compiled before the actual execution. In other words, it translates the bytecode to machine code.

 

- Java is class based. JS is prototype based. All objects, like Array or Function inherit from the Object.prototype which remains on top of the chain.

 

- JavaScript uses dynamic type checking (checks the variables while the code executes), unlike Java’s static checking system (variables are verified at compile time), which is more bug free.

 

- The word “Script.” It’s a joke, in case you didn’t get it.

 

 

A large number of people think that “freelancing” is something you do when you cannot get a real job. On the other hand, “freelancers” know that there is nothing more real than that to be the owner, director, and the financial manager at the same time.

 

Freelancing is basically being self-employed and not committed to any one company or firm. You’ve heard those seemingly perfect freelance stories. Some designer quits his jobs and starts freelancing and now he’s making more money than he was while at a firm. All the while travelling the world and working for himself. Not to mention he gets to choose what kind of work he does.

 

When I say “full-time job” I mean one that’s 30-hours per week or more. Basically, you’ve hit the threshold for wherever you’ve started to receive benefits for the time you work each week. Generally, over 30-hours is considered regular, and 40-hours is that the “traditional” hours for full time, however many jobs will go over that mark.

 

When you work as a freelancer, you’re not permanently employed by any one company. You may have a long-term contract, however freelancers are usually working with totally different employers at any given time and should have a spread of tasks that they'll be employed for.

 

“I choose to be in freelance because I’m able to work my own hours, determine my own salary, and be creative in my work.”

Freelance work offers tremendous advantages and can represent an attractive alternative to a traditional job. If you are considering a freelance career, you should explore the benefits of freelancing. 

  1. Working from home: Working from home is a perfect resolution for balancing work and family or personal life, during which you can with success make for a living and support yourself and your family. Engaging from home and thereby carve out a comfortable life, it's fully possible. But, as long as you're willing to work hard.
  2. Flexibility of hours: Working from home or from a remote workplace as a freelancer allows you to dictate your own hours and work on times most convenient to you. Freelancers with young kids, for instance, will work when the children are sleeping; freelancers with traditional employment or part-time jobs will perform their freelance work around their regular work hours.
  3. Perform multiple task as same time: Large Scale Company engaged in one activity or an entrepreneur who knows how to do five things at once? Freelancers are themselves in their work. That speaks to that they constantly further educate, constantly wide network of contacts and work hard at acquiring new skills that can make them more competitive in the work they are dealing with.
  4. Lower Cost: Utility costs, equipment, insurance, and running the business from the office building has become too costly. If the profit is insufficient, jobs will fail because of the buildup of these costs. Freelancers, on the other hand, almost don't have any additional cost, then will get started by simply registering at premium freelancing sites like Toogit.
  5. Freedom: As a freelancer, you can choose the clients you wish to work with and the projects on which you work, particularly if you have an excess of work. You can drop high maintenance or slow-paying clients or turn down undesirable projects if you desire.
  6. Income Control: Your income is the direct results of your own efforts instead of being set by the law firm or company. In most cases, the harder you work, the greater the reward. Your paycheck or bonus will not be capped, reduced or eliminated by your leader, though it will vary month to month, depending on your efforts and business.
  7. Learning through Work: Do not think about work like at a company wherever you work twenty years the same thing, you'll change jobs and employers on a weekly basis, and lots of additional can learn what is going to be helpful for future jobs.
  8. Full credit: When you work as a freelancer, you receive full credit for your work. You don't have to worry about the blunders of other employees, compromising your work product for the sake of the team or others taking credit for your work.
  9. Opportunity for all: Increasing employment of vulnerable teams like mothers and fathers with young kids, people with mobility problems and people living in remote areas.

 

“I prefer the freedom to choose what sort of work I do without my schedule being controlled and my choices being commanded by someone else. I can express myself and be appreciated for it as well as bring beauty to the world by way of my work. It also is less stressful than an office environment and allows me the time necessary to take care of my farm.”

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