6 Best Programming Languages to Learn in 2020 (for Job & Future)
1）Python
Python undoubtedly tops the list. It is widely accepted as the best programming language to learn first.
Python is fast, easy-to-use, and easy-to-deploy programming language that is being widely used to develop
scalable web applications. YouTube, Instagram, Pinterest, SurveyMonkey are all built-in Python. Python provides
excellent library support and has a large developer community. The programming language provides a great starting
point for beginners. Talking about those who are looking for a better job, you should definitely learn Python ASAP!
A lot of startups are using Python as their primary backend stack and so, this opens up a huge opportunity for
full-stack Python developers. Here is a sample Python “Hello World!” program:
print “Hello World!"
Yes, Python is that simple! Anyone who wishes to join a startup should master Python programming
Difficulty level: Easy to learn. Best language for beginners. 5 out of 5.
Job opportunity: Huge! 5 out of 5.
Pros:
- Creating and using classes and objects is easy thanks to OOP characteristics
- Extensive library support
- Focuses on code readability
- Has the ability to scale even the most complex applications
- Ideal for building prototypes and testing out ideas faster
- Open-source with an ever-growing community support
- Provides support for a multitude of platforms and systems
- Very easy to learn and use
Cons:
- Not suitable for mobile computing
- Slower by virtue of being an interpreted programming language
- The database access layer is somewhat immature
- Threading isn’t good because of GIL (Global Interpreter Lock)
2）JAVA
Java is another popular choice in large organizations and it has remained so for decades.
Java is widely used for building enterprise-scale web applications. Java is known to be extremely stable and so,
many large enterprises have adopted it. If you are looking for a development based job at a large organization,
Java is the language that you should learn. Java is also widely used in Android App Development.
Almost any business today needs an Android Application owing to the fact that there are billions of Android users today.
This opens up a huge opportunity for Java developers given the fact that Google has created an excellent Java-based
Android development framework - Android Studio.
Difficulty level: Easy to moderate to learn. 4 out of 5.
Job opportunity: Huge! 4.5 out of 5.
Pros:
- An abundance of open-source libraries
- Automatic memory allocation and garbage collection
- Follows the OOP paradigm
- Has the stack allocation system
- A high degree of platform independence thanks to the JVM feature
- Highly secure due to the exclusion of explicit pointer and inclusion of a security manager responsible for defining the access of classes
- Ideal for distributed computing
- Offers a galore of APIs for accomplishing different tasks, such as database connection, networking, utilities, and XML parsing
- Supports multithreading
Cons:
- Absence of templates limits creating high-quality data structures
- Expensive memory management
- Slower than natively compiled programming languages, like C and C++
3）C/C++
C/C++ is like the bread and butter of programming. Almost all low-level systems such as operating systems, file systems, etc are written in C/C++. If you wish to be a system-level programmer, C/C++ is the language you should learn. C++ is also widely used by competitive programmers owing to the fact that it is extremely fast and stable. C++ also provides something called STL - Standard Template Library. STL is a pool of ready-to-use libraries for various data structures, arithmetic operations, and algorithms. The library support and speed of the language make it a popular choice in the High-frequency trading community as well.
Difficulty level: Easy to moderate to learn. 3 out of 5.
Job opportunity: Moderate! 3.5 out of 5.
Pros:
- A galore of compilers and libraries to work with [C++]
- Eases accessing blocked or hidden objects by other programming languages [C]
- Faster execution of programs than most programming languages [C/C++]
- Forms the basis for understanding more complex programming languages [C/C++]
- Language of choice for multi-device, multi-platform app development [C++]
- Offers a great degree of portability [C]
- Procedure-oriented language with a group of function modules and blocks. These make debugging, testing, and maintaining the programs easier [C]
- Programs are more efficient and easy to understand [C/C++]
- Rich function library [C++]
- Runs close to the system hardware and hence, offers a low level of abstraction [C/C++]
- Support exception handling and function overloading [C++]
- Wide variety of application domains, such as games, GUI applications, and real-time mathematical simulations [C++]
Cons:
- Complex syntax [C/C++]
- Doesn’t support program namespace [C]
- Incapable of solving modern, real-world programming challenges [C]
- Less efficient object-oriented system compared to other OOP-based programming languages [C++]
- Need to manually create the high-level constructs [C]
- No garbage collection or dynamic memory allocation [C/C++]
- No run-time checking [C/C++]
- No strict type checking [C]
- Not an easy first-choice for learning programming [C/C++]
- Plagued by the issues of buffer overflow and memory corruption [C/C++]
- Smaller standard library [C]
4）JavaScript
Javascript is the “frontend” programming language. JavaScript is widely used to design interactive frontend
applications. For instance, when you click on a button which opens up a popup, the logic is implemented via JavaScript.
These days, many organizations, particularly startups, are using NodeJS which is a JavaScript-based run-time
environment. Node.js lets developers use JavaScript for server-side scripting—running scripts server-side to produce
dynamic web page content before the page is sent to the user's web browser. Hence now with JS, you can use a single
programming language for server-side and client-side scripts. If you are looking for that cool tech job at your favorite
startup, you should seriously consider learning JavaScript.
Difficulty level: Easy to learn. 4.5 out of 5.
Job opportunity: Huge! 5 out of 5.
Pros:
- Client-side JavaScript is very fast. It runs immediately within the web browser as there is no compilation requirement
- Gives a richer interface to a website
- Highly versatile
- It is the programming language of the web
- Reduced website server demand by virtue of being client-side
- Regular updates via the ECMA specification
- Several add-ons, such as Greasemonkey, for extending the functionality
- Simplistic implementation
- Plenty of resources and a mammoth community support
- Used for building a diverse range of applications
- Works exceptionally well with other programming languages
Cons:
- Absence of copy or equivalent method
- Allows only single inheritance
- As the code executes on the user machine, many people choose to disable JavaScript due to the fear of being exploited for a malicious intent
- Might be interpreted differently by different browsers
5）Go programming language
Go, also known as Golang, is a programming language built by Google. Go provides excellent support for
multithreading and so, it is being used by a lot of companies that rely heavily on distributed systems.
Go is widely used in startups in Silicon Valley. However, it is yet to be adopted by Indian companies/startups.
Those who wish to join a Valley-based startup specializing in core systems should master Golang.
Difficulty level: Easy to moderate to learn. 3 out of 5.
Job opportunity: Moderate! 2.5 out of 5.
Pros:
- Backed by Google
- Being a statically-typed language makes it more secure
- Cleaner syntax makes it easier to learn
- Comprehensive standard library offering a range of inbuilt functions for working with primitive types
- Ideal for building SPAs (single-page applications)
- Smart documentation
- Very fast as it is compiled to machine code
Cons:
- Absence of a virtual machine makes complex programs less efficient
- Implicit interfaces
- Lacks versatility
- No GUI library
- Underprivileged library support
6）PHP
PHP is among the most popular backend programming language. Though PHP is facing tough competition from
Python and JavaScript, the market still needs a large number of PHP developers. Those who wish to join a reasonably
well old organization as a backend developer should aim to learn PHP programming.
Difficulty level: Easy to learn. 4.5 out of 5.
Job opportunity: Huge! 4.5 out of 5.
Pros:
- Abundance of powerful frameworks
- Easy to get started for making web pages
- First-class debugging with Xdebug
- Gigantic community support and a huge ecosystem
- Lots of automation tools for testing and deploying applications
- No scarcity of good automation tools for deployment and testing
- Supports object-oriented and functional programming paradigms
Cons:
- Developing websites completely in PHP is slower as compared to using other options
- Lacks in terms of security
- Poor error handling
- Requires extensions to a greater extent
Summary
- Python and Javascript are hot in the startup world. Many startups use Django (Python), Flask (Python), and NodeJS (JavaScript) as their backend frameworks. Python and JavaScript are easy-to-learn and therefore considered the best programming languages to learn for beginners. Moreover, both of them also provide a huge market opportunity. Therefore, those who are looking for a job change may also consider learning them.
- Java and PHP are hot in the corporate world. Many organizations use Spring (Java) and Codeigniter (PHP) as their web backend framework.
- R and Matlab are hot in the Data Analytics world. If you wish to develop a career in Data Analytics or Data Science, these are the languages to learn.
- C/C++ and Golang are the top choices in building low-latency and scalable systems.
I hope you would have found your answer to "which programming language to learn first" by now.
Feel free to ask your question(s) in the comment, and I'll be happy to respond. All the best!