Ruby Vs. Javascript

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Summary Ruby vs JavaScript

In short, Ruby is an object-oriented language typically used for server-side development. JavaScript is also object-oriented and typically used for client-side applications. JavaScript is used a lot more than Ruby, although Ruby is still a strong language.

JavaScript is one of the number one languages ‚Äã‚Äãon the web. If you’re developing something for the front-end, there’s a good chance you’ll be building it in JavaScript. In fact, JavaScript is the most widely used language on Github at the time of writing. Ruby is another generic programming language that is also used on the web, including its web framework, Ruby on Rails. How do these two languages ‚Äã‚Äãcompare and which one should you learn? Let’s find out.

JavaScript

JavaScript is, along with HTML and CSS, one of the fundamental technologies of the Internet. It allows us to have interactive web pages and is the language of reference for client side web applications. It is used on almost everything on the internet - since 2018 95% of all websites used JavaScript . The web-dominated list includes sites like Google, Facebook, and Youtube, all of which use JavaScript.

JavaScript was created to "bring web pages to life". Designed for applications and websites, it was created by Brendan Eich who worked for Netscape in 1995. It is a high-level interpreted scripting language, which means JavaScript is not compiled; it is interpreted in place at runtime. JavaScript is also an object-oriented programming language, like C languages. It has curly braces syntax, dynamic typing, and first-class functions. Its interpreter is built into web browsers, so without the help of a program like Node.js, it will only work in a browser.

Ruby

Ruby is a dynamic open source programming language . It emphasizes simplicity and productivity. Ruby was developed by Yukihiro Matsumoto and launched in 1995, It is designed for ease of use, being dynamic and duck typing (if it looks like a duck, it’s a duck - a type identification method ), multi -paradigm, high level and interpreted. Ruby is also object oriented like JavaScript. It is flexible because it allows programmers to change how it works by modifying different parts of the language. It was influenced by Python and Pearl and has many different uses .

Ruby is also well known for Ruby on rails. Ruby on Rails was designed to easily create web applications and has been around since 2011. It has been used for social media, blogging, and online marketplaces. It has been used for AirBnB, Hulu, and Github. However, the popularity of Rail has declined dramatically since JavaScript took to the web.

What is Ruby on Rails?

Ruby on Rails is a framework written in Ruby for building web applications. Frameworks are like a skeleton for web development, providing some of the basic structures and optional features that can be inserted and removed. Another example of a popular framework is Angular, which is based on JavaScript. It is important to note that Rails is not a programming language, but Ruby is. Rails is simply created using Ruby and saves you a lot of typing.

Ruby on Rail follows the style of the MVC framework (template, view, controller). Models store information, view shows them, and the controller works in between to control them. Ruby on Rails also comes with gems s. Gems are libraries of Ruby programs that have been turned into a standard format for installation so that they are plug and play. There are thousands and many gems available, each serving a unique and often required need when building a web application.

JavaScript vs. Ruby

Alex Meier EbXSMYVOF I Unsplash
Two different types of coffee ice cream sitting on a table.
< tr>
Ruby JavaScript
Ruby is typically used for client server side application . JavaScript is typically used for the client -side applications.
Ruby is slower than JavaScript. JavaScript is faster than Ruby.
Ruby is easier to write and learn. JavaScript is harder to grasp and learn.
Ruby is object oriented with classes, almost everything in Ruby is an object. JavaScript is object oriented but classless.
Ruby is written ’duck’ . JavaScript is written freely.

Now that we have some information on the two languages, let’s take a look at them and find out which one we could prefer to the other. We will approach this task by comparing them face to face on several fronts.

Typing and Syntax

Ruby is designed for usability. His philosophy is that there is more than one way to do something. So not only does Ruby have simple and easy to learn syntax, but it also has syntax designed to be used however you want. It’s top notch, no variable or semicolon declarations, just easy-to-read code. It is also more object oriented than most other object oriented languages. It is so object oriented that everything is object, with methods and functions, even simple integers. For this reason, programmers can use method chaining; where a lot of code can be reduced to a little bit of code.

JavaScript isn’t terrifying on the eyes, and it’s certainly not as painful to type as C languages, but it just doesn’t look as clean as Ruby. Ruby reads almost like normal human language, placing it high in the high / medium / low level programming chart.

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However, since Ruby is so flexible in the way it allows the programmer to use it, it can be difficult to pass code between programmers. Code that would normally consist of multiple lines can be reduced to a few, then down to one line later. While these clean code looks better, it can also be difficult to read or harder to read than the same code spanning multiple lines. a single line of code that should be a lot can be difficult to crack. Because he’s relaxed, Ruby also allows for very inefficient programming methods and doesn’t force anyone to adhere to a set of programming rules, although they should.

Also, since Ruby is at such a high level, debugging can be a nightmare. Ruby is particularly abstract, so figuring out which line of code is manipulating the interpreter the wrong way can be difficult. squo, it’s not as easy as losing a semicolon, and it’s often linked to some invisible interaction happening under the hood, or also buried under a huge call stack

Performance

In general, there is a rule regarding the performance of programming languages. The closer it is to the machine code, the faster it will be. In this sense, the higher a programming language is, the slower it will be. This rule applies to Ruby and JavaScript. JavaScript is not fast, not compared to faster compiled languages ‚Äã‚Äãlike C ++. However, Ruby makes JavaScript look like a Ferrari. For benchmarks, Ruby maintains an average speed 50% to 200% slower than JavaScript (run with node.js). Some things that take less than 30 seconds in JavaScript can take around eight minutes to complete Ruby.

It is important to note that Ruby is slower in a baseline situation. That’s when we throw in something that’s hard to understand and then measure how long it takes the language to understand it. In the real world, when building a web application, you don’t always have to solve Mandelbrot fractals. In this sense, many Ruby fans argue that Ruby is quite fast, only slow compared to other languages, but works fine otherwise. This topic is the subject of intense debate, however, there are many functional examples of Ruby doing well: AirBnB, Kickstarter, or Apple.com to name a few. Performance usually only becomes an issue if perfect timing or large and complex calculations are required.

Both languages ‚Äã‚Äãhave large communities behind them. The JavaScript suite is larger and is considered the most used language by many parameters. It consumes almost 95% of the internet and beyond. In the modules and packages available, he wins for the distance from here to the moon. While Ruby and Rails have a few thousand modules available, npm (for node.js, which is again JavaScript) has over 800,000 modules, most of which are open source and many of which are free for commercial use.

However, since Ruby is a much easier language to use, so is the community. They are generally considered to be helpful and kind to beginners, as Ruby is a kind language to beginners as well. Its community is also very active, which makes it a fairly well documented language. And while the Gem library for Rails isn’t as big as the JavaScript catalog for node.js, the modules are designed with care.

Career perspective

JavaScript rules the internet, and although Rails is easy to use, it lacks the performance or market share of JavaScript. That said, Ruby remains a worthwhile investment for people looking to learn a new language. Ruby also works great as a second language because Ruby is so easy to learn.

At the time of writing, Indeed.com offers more 16,000 ads from I work for Ruby developers and programmers only in the United States. Ruby developers are also making a lot of money. An average Ruby developer can generally expect to make anywhere from $ 50,000 to over $ 200,000 per year. According to Indeed, where all of these jobs are listed, the national average for a Ruby developer in the United States is $ 123,154 per year .

A lot of people will tell you that JavaScript is the best language to have in your pocket, and I don’t think they do. You are wrong. Even if you don’t intend to become a JavaScript specialist, learning JavaScript will likely take you further in the developer’s life, especially as a full stack developer. If you plan on keeping JavaScript the center of attention, that’s not a bad idea either. The same site we used earlier, Indeed, has almost 60,000 JavaScript jobs. On Indeed, the average JavaScript developer salary is similar to Ruby’s: $ 113,615 per year .

Both choices have great prospects, but if you had to choose between the two, JavaScript is the primary language. Unless the internet changes in the next few years, JavaScript is going nowhere and there will always be a need for more JS developers, while Ruby’s future is less certain.

👻 Read also: what is the best laptop for engineering students?

Ruby Vs. Javascript __del__: Questions

How can I make a time delay in Python?

5 answers

I would like to know how to put a time delay in a Python script.

2973

Answer #1

import time
time.sleep(5)   # Delays for 5 seconds. You can also use a float value.

Here is another example where something is run approximately once a minute:

import time
while True:
    print("This prints once a minute.")
    time.sleep(60) # Delay for 1 minute (60 seconds).

2973

Answer #2

You can use the sleep() function in the time module. It can take a float argument for sub-second resolution.

from time import sleep
sleep(0.1) # Time in seconds

Ruby Vs. Javascript __del__: Questions

How to delete a file or folder in Python?

5 answers

How do I delete a file or folder in Python?

2639

Answer #1


Path objects from the Python 3.4+ pathlib module also expose these instance methods:

Removing white space around a saved image in matplotlib

2 answers

I need to take an image and save it after some process. The figure looks fine when I display it, but after saving the figure, I got some white space around the saved image. I have tried the "tight" option for savefig method, did not work either. The code:

  import matplotlib.image as mpimg
  import matplotlib.pyplot as plt

  fig = plt.figure(1)
  img = mpimg.imread(path)
  plt.imshow(img)
  ax=fig.add_subplot(1,1,1)

  extent = ax.get_window_extent().transformed(fig.dpi_scale_trans.inverted())
  plt.savefig("1.png", bbox_inches=extent)

  plt.axis("off") 
  plt.show()

I am trying to draw a basic graph by using NetworkX on a figure and save it. I realized that without a graph it works, but when added a graph I get white space around the saved image;

import matplotlib.image as mpimg
import matplotlib.pyplot as plt
import networkx as nx

G = nx.Graph()
G.add_node(1)
G.add_node(2)
G.add_node(3)
G.add_edge(1,3)
G.add_edge(1,2)
pos = {1:[100,120], 2:[200,300], 3:[50,75]}

fig = plt.figure(1)
img = mpimg.imread("image.jpg")
plt.imshow(img)
ax=fig.add_subplot(1,1,1)

nx.draw(G, pos=pos)

extent = ax.get_window_extent().transformed(fig.dpi_scale_trans.inverted())
plt.savefig("1.png", bbox_inches = extent)

plt.axis("off") 
plt.show()
228

Answer #1

You can remove the white space padding by setting bbox_inches="tight" in savefig:

plt.savefig("test.png",bbox_inches="tight")

You"ll have to put the argument to bbox_inches as a string, perhaps this is why it didn"t work earlier for you.


Possible duplicates:

Matplotlib plots: removing axis, legends and white spaces

How to set the margins for a matplotlib figure?

Reduce left and right margins in matplotlib plot

228

Answer #2

I cannot claim I know exactly why or how my “solution” works, but this is what I had to do when I wanted to plot the outline of a couple of aerofoil sections — without white margins — to a PDF file. (Note that I used matplotlib inside an IPython notebook, with the -pylab flag.)

plt.gca().set_axis_off()
plt.subplots_adjust(top = 1, bottom = 0, right = 1, left = 0, 
            hspace = 0, wspace = 0)
plt.margins(0,0)
plt.gca().xaxis.set_major_locator(plt.NullLocator())
plt.gca().yaxis.set_major_locator(plt.NullLocator())
plt.savefig("filename.pdf", bbox_inches = "tight",
    pad_inches = 0)

I have tried to deactivate different parts of this, but this always lead to a white margin somewhere. You may even have modify this to keep fat lines near the limits of the figure from being shaved by the lack of margins.

We hope this article has helped you to resolve the problem. Apart from Ruby Vs. Javascript, check other __del__-related topics.

Want to excel in Python? See our review of the best Python online courses 2022. If you are interested in Data Science, check also how to learn programming in R.

By the way, this material is also available in other languages:



Cornwall Danburry

San Francisco | 2022-11-30

Thanks for explaining! I was stuck with Ruby Vs. Javascript for some hours, finally got it done 🤗. I just hope that will not emerge anymore

Davies Ungerschaft

California | 2022-11-30

I was preparing for my coding interview, thanks for clarifying this - Ruby Vs. Javascript in Python is not the simplest one. Will use it in my bachelor thesis

Frank Jackson

Massachussetts | 2022-11-30

Maybe there are another answers? What Ruby Vs. Javascript exactly means?. Checked yesterday, it works!

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