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I am Software Engineer and want to polish my skills by joining a well reputed organization. I have good coding skills and familiar with bunch of prog...Read More
Amit R.Software Engineer, India
$5 /hr
2 Years Exp.
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Contact me if you want an end to end development of a project.
Yogesh Jaiswal J.Web Scraping/Python developer, India
$6 /hr
7 Years Exp.
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Welcome to my profile. I love to do automation. My capabilities the following: Web scraping, crawling - Data Extraction - Data manipulations - Python...Read More
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Nowadays, Android is not just on tens of thousands of different phones and tablets. It’s on your wrist, in your living room, in your car, and as soon we start assigning IP addresses to inanimate objects, it is going to be pretty much everywhere around us. A lot of ground for even an experienced Android developer to cover!

 

Also there are over one million apps on Google Play, not counting Amazon AppStore or markets we are not generally interested in.

 

So, how can an independent developer create a successful app in this huge market with big players? I have no idea, I haven’t made a successful app! But, I have made a cute one, and I’d like to share my story with you.

Few Android Studio Tips, Tricks & Resources you should be familiar with, as an Android Developer

The reason of this article, is to list helpful tips, tricks, shortcuts and resources for Android Studio that will improve your overall efficiency and performance.

 

1.Material Colors theme for Android Logcat

To change Android Studio Logcat you need to go to:Preferences (Settings on Windows / Linux machines) → Editor → Colors & Fonts → Android Logcat and change the foreground color for every type of log.

 

2. Prevent Android Studio Logcat from clearing the log for the current application when it crashes. 

To do that you need to go to theAndroid Monitorpanel and chooseEdit filter configurationon the right side dropdown.

 

3. Apply a proper code style to your IDE (IntelliJ / Android Studio). 

Go toPreferences → Code Style → Javaand in aSchemedropdown you can choose your code style (or set up a new one).

2 styles which are especially worth to mention:

Square Java Code Styles with Android

Google Java Code Style.

 

4. Use split screen for increasing efficiency.

To turn this feature on, you need to right mouse click on the tab of your main screen and choose Split Vertically / Horizontally feature.

But to be as efficient as possible we need to set up a custom keyboard’s shortcut. To do that go to Preferences → Keymap and search for Split Vertically. Then open a context menu and click Add Keyboard Shortcut

It is shown on a gif below. You can define the shortcut for a horizontal split view as well.

 

5. Distraction Free Mode. 

You can enable it by going to: View → Enter Distraction Free Mode

 

6. Use Live Templates

you can use many already defined templates, like for Toasts or if conditions.

you can use your own custom templates. Here is a great reference article by Reto Meier. You can also refer to the IntelliJ IDEA documentation.

 

Learn XML And Java

Extensible markup language (XML) is a markup language that’s the foundation for the Android user interface (UI) and elements. Java is the back-end coding language of the Android platform, and it’s used with binding functionality with your XML layouts. Let’s take a look at a small example.

 

<?xml version="1.0" encoding="utf-8"?> <layout xmlns:android=http://schemas.android.com/apk/res/android"> <data> <variable name="user" type="com.example.User"/> </data> <LinearLayout android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{user.firstName}"/> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@{user.lastName}"/> </LinearLayout> </layout>

 

This small layout has one data object defined as “User.” For developers used to binding elements in even web design, this should be intuitive for you. The data element is defined in Java, and then the object data is bound to the front-end layout element. In this example, we have a first and last name. The following Java code is an example of a User class used for the binding.

 

public class User { public final String firstName; public final String lastName; public User (String firstName, String lastName){ this.firstName = firstName; this.lastName = lastName; } }

Notice that the constructor takes a first and last name variable and binds the data to the public class properties. When the screen opens on the device, this data is then bound to the front-end elements.

 

Before you get started in Android Application development, you should be expert in both of these technologies. Understanding the fundamentals of XML formats is relatively easy, but Java is an object-oriented language and object-oriented programming (OOP) can be challenging if you’re not familiar with the concept. A newer language and framework, Kotlin, has been introduced to help advance Android app development. It can also be used with legacy Java apps as Kotlin co-operates with Java code.

 

The best way to learn Java is to dive into someone else’s code. GitHub is filled with open-source projects that help you understand Java and OOP concepts. The better your OOP skills are, the easier it will be to create a better coded, less buggy Android app.

 

Understand Memory Limitations

Mobile devices don’t have the high memory limitations that desktops have. In mobile programming, you must learn to code with smaller memory limitations in mind. If you carelessly use memory on an Android device, you run the risk of your app crashing due to “out of memory” errors.

To work around this, use services on the device sparingly and release memory resources when your app is hidden. You can release memory resources by overriding the onTrimMemory event although you should know that this isn’t a magic solution that allows you to ignore other performance optimization throughout your code. The following is a small sample of pseudocode that shows you how to override the event.

@Override public void onTrimMemory(int level) { if (level >= TRIM_MEMORY_MODERATE) {

//release resources here } }

Google also recommends that you avoid or at least reduce the use of bitmaps to lower the memory use when your app is running on the device. 

 

Don’t Use The Emulator For Real-World Testing

The Emulator in Android Studio is good for development and even debugging, but it doesn’t fully simulate a working Android device. You can consider basic environment features with the Emulator, but when it comes to testing, you should always use actual devices.

Of course, this is a huge investment for an Android developer, but it will make the entire development and testing life cycle much more efficient. It also ensures that you’re able to test your applications in various conditions as the user changes settings on the actual device. You can, however, use automated cloud solutions such as Amazon’s Testing platform.

 

Testing should never be taken lightly. It should be a major part when you design and deploy apps for your clients. Fewer bugs means happier users, and it can also mean a more successful app in Google Play. This doesn’t mean that you need to buy every device on the market to test your app on, but you should account for some of the more popular ones and the most common screen sizes.

Ghostwriting can be a great career if you are a talented writer who is full of ideas and good at analysis and at capturing the style and tone of various publications and of clients whom you'll be working with. However there are some things you should be clear about before starting to work as a ghostwriter.

What is Ghostwriter?

I think most of us know what a Ghostwriter is. As defined by Wikipedia, it’s:

“A person who is hired to write literary or journalistic works, speeches, or other text that are officially credited to another person as the author.”

A writer who is paid to write articles, books, reports, stories, website material or other content that is officially credited to another person is called a ghostwriter. A ghostwriter writes a piece of work, such as non-fiction or fiction, but does not put their name on it. Political leaders, celebrities, website owners, and executives typically hire ghostwriters to draft or edit their written material.

If you want to make money telling other people’s stories on the sly, you’ll have to be a good listener, a good researcher and a good writer. If you can do all that, you could make a living from this type of freelance work.

What does a ghostwriter do?

Ghostwriters are paid to write for someone else and allow them to put their name on that. Ghostwriter is their secret weapon behind the scenes. There is a high demand for ghostwriters to provide a wide range of content, like blog posts, articles, non-fiction books, and even celebrity autobiographies. Websites perpetually want fresh and interesting content. Many of us dream of getting a bestselling book, but simply don’t have the writing skills. You will satisfy all these needs and get paid doing something you like.

How to become a Ghostwriter?

  • Gain experience: Ghostwriting is an excellent source of income and a great career alternative for an accomplished writer, it's certainly not an entry-level position. If you haven’t been published yourself, it’s unlikely you’re able to write to a publishable standard for someone else. Seriously, how are you able to write a book for someone else, in their voice, when you’ve never written one yourself? Better yet, write two or three. Shoot for a minimum of 50,000 words each so you get a sense for writing something that long dealing with the nuances of voice, narrative, flow, etc.

This makes sense on two levels: firstly, you need to be able to market yourself as a successful and experienced writer to potential clients who will be paying you to write for them. Secondly, you’ll need the experience you’ve acquired so far to navigate through a ghostwriting project.

  • Identify your niche: While it is great to experience with various things when starting out as a ghostwriter, most ghostwriters have a “niche”: a unique point. Are you working on lyrics for top bands? Do you write business books? Make sure to concentrate on one thing. while it’s tempting to want a broad ghostwriting portfolio, having a specialist field can make you an professional in that niche, and you're more likely to get better, high-quality ghostwriting work in that area.
  • Ability to work on tight deadlines: As a ghostwriter, you have to gather a deep understanding of your client’s needs and expectations. At the beginning of a project, you’ll get brief descriptions of project, outlining complete guidelines, expectations, and deadlines. And deadlines you'll get, you can’t expect an entire publishing team to wait for you while you sit around waiting for inspiration to strike.

If you’re an experienced writer, you’ll already know how to establish a regular, hardworking rhythm that works for you. However, it’s necessary to keep in mind that a ghostwriting project isn't something that may be completed in your own time. Do you have enough self-discipline to visualize a project through over a long period of time? Some ghostwritten projects take a few years to write, and procrastination is all too simple when you think you have all that time to achieve it.

  • Research and communication skills required: Ghostwriting isn't the simplest job in the world. It requires smart communication skills and extreme patience in some cases for you to be able to do the work. You’re required to be a listener and a researcher. This sounds simple, but if you happen to be working with an uncommunicative subject, then it will really feel like a bloodshed.

Ghostwriters not only write up the story but do the majority of the legwork. If it’s an autobiography, you’ll require a top-notch interview skills. For other non-fiction ghostwriting, you’ll most likely be researching away.

Quality research also provides you the opportunity to confirm the information that your client has given you. Doing this doesn’t mean that you just disbelieve whatever they’ve told you. You’re simply fact-checking and qualifying the information that you just have been given that is your job.

  • Put your ego aside: Ghostwriting isn't about you. It’s about your client. It’s obvious that you need to be an excellent writer but you also need to be comfortable switching your writing style to encapsulate your client’s voice, even though you're thinking that yours is better.

As a ghostwriter, your name won’t appear on the cover and the most you'll hope for is a thank you in the acknowledgements section, so there’s no area to enjoy dreams of seeing your name in print. You would possibly want to shout about your achievements but remember that you’re being paid to stay quiet.

If you can persuade your ego to step aside to put in the diligence for someone else, you'll gain publishing success and build a solid, skilled reputation through your ghostwritten work.

The importance of extracting information from the web is becoming increasingly loud and clear. Every few weeks, I realize myself in a situation where we need to extract information from the web to create a machine learning model. We have to pull or extract a large amount of information from websites and we would like to do it as quickly as possible. How would we do it without manually going to every web site and getting the data? Web Scraping simply makes this job easier and faster.

Why is web scraping needed?

Web scraping is used to collect large information from websites. But why does someone have to collect such large data from websites? Let’s look at the applications of web scraping: 

  1. Price Comparison: Services such as ParseHub use web scraping to collect data from online shopping websites and use it to compare the prices of products.
  2. Social Media Scraping: Web scraping is used to collect data from Social Media websites such as Twitter to find out what’s trending.
  3. Email address gathering: Many companies that use email as a medium for marketing, use web scraping to collect email ID and then send bulk emails.
  4. Research and Development: Web scraping is used to collect a large set of data (Statistics, General Information, Temperature, etc.) from websites, which are analyzed and used to carry out Surveys or for R&D.
  5. Job listings: Details regarding job openings, interviews are collected from different websites and then listed in one place so that it is easily accessible to the user.

 

Web scraping is an automated method used to extract large amounts of data from websites. The data on the websites are unstructured. Web scraping helps collect these unstructured data and store it in a structured form. There are different ways to scrape websites such as online Services, APIs or writing your own code.

Why Python is best for Web Scraping

Features of Python which makes it more suitable for web scraping:

  1. Ease of Use: Python is simple to code. You do not have to add semi-colons “;” or curly-braces “{}” anywhere. This makes it less messy and easy to use.
  2. Large Collection of Libraries: Python has a huge collection of libraries such as Numpy, Matlplotlib, Pandas etc., which provides methods and services for various purposes. Hence, it is suitable for web scraping and for further manipulation of extracted data.
  3. Dynamically typed: In Python, you don’t have to define datatypes for variables, you can directly use the variables wherever required. This saves time and makes your job faster.
  4. Easily Understandable Syntax: Python syntax is easily understandable mainly because reading a Python code is very similar to reading a statement in English. It is expressive and easily readable, and the indentation used in Python also helps the user to differentiate between different scope/blocks in the code.
  5. Small code, large task: Web scraping is used to save time. But what’s the use if you spend more time writing the code? Well, you don’t have to. In Python, you can write small codes to do large tasks. Hence, you save time even while writing the code.
  6. Community: What if you get stuck while writing the code? You don’t have to worry. Python community has one of the biggest and most active communities, where you can seek help from.

How does web scraping work

To extract data using web scraping with python, you need to follow these basic steps:

  1. Find the URL that you want to scrape
  2. Inspecting the Page
  3. Find the data you want to extract
  4. Write the code
  5. Run the code and extract the data
  6. Store the data in the required format

Example: Scraping a website to get product details

Pre-requisite:

  • Python 2.x or Python 3.x
  • Selenium Library
  • BeautifulSoup Library
  • Pandas Library
  1. We are going scrape online shopping website to extract the Price, Name, and rating of products, go to products URL
  2. The data is usually nested in tags. So, we inspect the page to examine, under which tag the information we would like to scrape is nested. To inspect the page, just right click on the element and click on “Inspect”. When you click on the “Inspect” tab, you will see a “Browser Inspector Box” open.
  3. Let’s extract the Price, Name, and Rating which is nested in the “div” tag respectively.
  4. Write code:

#Let us import all the necessary libraries

from selenium import webdriver

from BeautifulSoup import BeautifulSoup

import pandas as pd

driver = webdriver.Chrome("/usr/lib/chromium-browser/chromedriver")

products=[] #List to store name of the product

prices=[] #List to store price of the product

ratings=[] #List to store rating of the product

driver.get("Product_URL")

content = driver.page_source

soup = BeautifulSoup(content)

for a in soup.findAll('a',href=True, attrs={'class':'.…'}):

name=a.find('div', attrs={'class': '….'})

price=a.find('div', attrs={'class':'….'})

rating=a.find('div', attrs={'class':'….'})

products.append(name.text)

ratings.append(rating.text)

df = pd.DataFrame({'Product Name':products,'Price':prices,'Rating':ratings})

df.to_csv('products.csv', index=False, encoding='utf-8')

 

To run the code, a file name “products.csv” is created and this file contains the extracted data.

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