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C vs Kotlin: What are the differences?

Developers describe C as "One of the most widely used programming languages of all time". . On the other hand, Kotlin is detailed as "Statically typed Programming Language targeting JVM and JavaScript". Kotlin is a statically typed programming language for the JVM, Android and the browser, 100% interoperable with Java.

C and Kotlin can be categorized as "Languages" tools.

"Performance" is the top reason why over 52 developers like C, while over 28 developers mention "Interoperable with Java" as the leading cause for choosing Kotlin.

Kotlin is an open source tool with 28.3K GitHub stars and 3.28K GitHub forks. Here's a link to Kotlin's open source repository on GitHub.

Slack, 9GAG, and Rainist are some of the popular companies that use Kotlin, whereas C is used by Twitch, AdRoll, and Redis Labs. Kotlin has a broader approval, being mentioned in 268 company stacks & 208 developers stacks; compared to C, which is listed in 64 company stacks and 251 developer stacks.

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What is C?

What is Kotlin?

Kotlin is a statically typed programming language for the JVM, Android and the browser, 100% interoperable with Java
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What are some alternatives to C and Kotlin?
Java
Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!
PHP
Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.
JavaScript
JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.
Python
Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.
HTML5
HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. As of October 2014 this is the final and complete fifth revision of the HTML standard of the World Wide Web Consortium (W3C). The previous version, HTML 4, was standardised in 1997.
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Decisions about C and Kotlin
marcoalmeida
marcoalmeida
C
C
Go
Go
Rust
Rust
Python
Python

One important decision for delivering a platform independent solution with low memory footprint and minimal dependencies was the choice of the programming language. We considered a few from Python (there was already a reasonably large Python code base at Thumbtack), to Go (we were taking our first steps with it), and even Rust (too immature at the time).

We ended up writing it in C. It was easy to meet all requirements with only one external dependency for implementing the web server, clearly no challenges running it on any of the Linux distributions we were maintaining, and arguably the implementation with the smallest memory footprint given the choices above.

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StackShare Editors
StackShare Editors
Kotlin
Kotlin
gRPC
gRPC
Go
Go
Ruby
Ruby

As the WeWork footprint continued to expand, in mid-2018 the team began to explore the next generation of identity management to handle the global scale of the business.

The team decided to vet three languages for building microservices: Go, Kotlin, and Ruby. They compared the three by building a component of an identity system in each, and assessing the performance apples-to-apples.

After building out the systems and load testing each one, the team decided to implement the new system in Go for a few reasons. In addition to better performance under heavy loads, Go, according to the team, is a simpler language that will constrain developers to simpler code. Additionally, the development lifecycle is simpler with Go, since “there is little difference between running a service directly on a dev machine, to running it in a container, to running clustered instances of the service.”

In the implementation, they the Go grpc framework to handle various common infrastructure patterns, resulting in “in a clean common server pattern that we can reuse across our microservices.”

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Conor Myhrvold
Conor Myhrvold
Tech Brand Mgr, Office of CTO at Uber · | 7 upvotes · 421.2K views
atUber TechnologiesUber Technologies
JavaScript
JavaScript
Java
Java
C
C

Why Uber developed H3, our open source grid system to make geospatial data visualization and exploration easier and more efficient:

We decided to create H3 to combine the benefits of a hexagonal global grid system with a hierarchical indexing system. A global grid system usually requires at least two things: a map projection and a grid laid on top of the map. For map projection, we chose to use gnomonic projections centered on icosahedron faces. This projects from Earth as a sphere to an icosahedron, a twenty-sided platonic solid. The H3 grid is constructed by laying out 122 base cells over the Earth, with ten cells per face. H3 supports sixteen resolutions: https://eng.uber.com/h3/

(GitHub Pages : https://uber.github.io/h3/#/ Written in C w/ bindings in Java & JavaScript )

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StackShare Editors
StackShare Editors
Apache Thrift
Apache Thrift
Kotlin
Kotlin
Presto
Presto
HHVM (HipHop Virtual Machine)
HHVM (HipHop Virtual Machine)
gRPC
gRPC
Kubernetes
Kubernetes
Apache Spark
Apache Spark
Airflow
Airflow
Terraform
Terraform
Hadoop
Hadoop
Swift
Swift
Hack
Hack
Memcached
Memcached
Consul
Consul
Chef
Chef
Prometheus
Prometheus

Since the beginning, Cal Henderson has been the CTO of Slack. Earlier this year, he commented on a Quora question summarizing their current stack.

Apps
  • Web: a mix of JavaScript/ES6 and React.
  • Desktop: And Electron to ship it as a desktop application.
  • Android: a mix of Java and Kotlin.
  • iOS: written in a mix of Objective C and Swift.
Backend
  • The core application and the API written in PHP/Hack that runs on HHVM.
  • The data is stored in MySQL using Vitess.
  • Caching is done using Memcached and MCRouter.
  • The search service takes help from SolrCloud, with various Java services.
  • The messaging system uses WebSockets with many services in Java and Go.
  • Load balancing is done using HAproxy with Consul for configuration.
  • Most services talk to each other over gRPC,
  • Some Thrift and JSON-over-HTTP
  • Voice and video calling service was built in Elixir.
Data warehouse
  • Built using open source tools including Presto, Spark, Airflow, Hadoop and Kafka.
Etc
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Dan Larsen
Dan Larsen
CTO at FlowStack · | 7 upvotes · 30.6K views
atFlowStack ApSFlowStack ApS
C++
C++
C
C
Rust
Rust
Go
Go

At FlowStack we write most of our backend in Go. Go is a well thought out language, with all the right compromises for speedy development of speedy and robust software. It's tooling is part of what makes Go such a great language. Testing and benchmarking is built into the language, in a way that makes it easy to ensure correctness and high performance. In most cases you can get more performance out of Rust and C or C++, but getting everything right is more cumbersome.

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Interest over time
Reviews of C and Kotlin
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How developers use C and Kotlin
Avatar of Philtard
Philtard uses KotlinKotlin

Even though still a young language, it feels so at home sitting in the springboot frame and works with vaadin just great. And in itself it has like all the best parts of java, scala, python mixed into one.

Avatar of papaver
papaver uses CC

been programming in c for over a decade, since learning it in college. still use it for various low level projects. used it recently to develop an embedded application for a custom board.

Avatar of micro systems
micro systems uses CC

The core of the arcapos applications is written in C, so are most of the Lua modules (bindings to various hardware or protocols).

Avatar of fileee GmbH
fileee GmbH uses KotlinKotlin

We use Kotlin both in our Android App and increasingly in our polyglot backend services.

Avatar of Sqreen
Sqreen uses CC

The Sqreen PHP agent is both a PHP extension, built in C, and a daemon built in Python.

Avatar of claudiofus
claudiofus uses KotlinKotlin

Statically typed programming language for modern multiplatform applications.

Avatar of POROWNEO.PL
POROWNEO.PL uses CC

Axis2/c, rampart/c, savan/c, barbershop and custom php extensions.

Avatar of Cirrus Labs
Cirrus Labs uses KotlinKotlin

All 20+ micro-services that power Cirrus CI are written in Kotlin.

Avatar of Vaultize
Vaultize uses CC

Used in backend and clients for performance heavy tasks.

Avatar of movix
movix uses KotlinKotlin

Unit tests, backend with Spring Boot

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