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Hack vs JavaScript vs Scala: What are the differences?
Syntax: Hack has a more strict and verbose syntax compared to JavaScript, resulting in fewer chances for errors in code. Scala, on the other hand, has a concise and expressive syntax that combines object-oriented and functional programming seamlessly.
Type System: Hack introduces gradual typing, allowing developers to opt for static typing in certain parts of the codebase while maintaining the flexibility of dynamic typing. This is different from JavaScript, which is dynamically typed, and Scala that emphasizes static typing with type inference capabilities.
Performance: Hack is known for its high performance due to its static type checking and Just-In-Time (JIT) compilation, leading to faster execution speed compared to JavaScript. Scala, being a statically-typed language, also offers good performance optimization opportunities.
Concurrency: Scala provides powerful concurrency features such as actors and futures as part of its standard library, making it well-suited for concurrent and parallel programming tasks. JavaScript lacks built-in concurrency support, whereas Hack offers asynchronous programming capabilities similar to JavaScript through its async/await syntax.
Community and Ecosystem: JavaScript has a vast community and rich ecosystem, with numerous libraries and frameworks available for various development needs. Hack, being a relatively newer language, has a smaller community but is backed by Facebook, which provides strong support and resources for developers. Scala has a dedicated community and a growing ecosystem, with a focus on functional programming paradigms.
Tooling: Hack comes with its own built-in type checker and static analyzer tool, making it easier for developers to catch errors early in the development process. Scala, on the other hand, relies on external tools like sbt and ScalaTest for build automation and testing, offering a more customizable but sometimes complex tooling environment.
In Summary, the key differences between Hack, JavaScript, and Scala lie in their syntax, type systems, performance, concurrency support, community, ecosystem, and tooling.
Pros of Hack
- Interoperates seamlessly with php6
- Open source6
- Backed by facebook5
- HHVM4
- PHP like2
- Great documentation2
- Generics2
- Fast1
- Used by facebook1
- Great type system0
- Easy to learn0
Pros of JavaScript
- Can be used on frontend/backend1.7K
- It's everywhere1.5K
- Lots of great frameworks1.2K
- Fast896
- Light weight745
- Flexible425
- You can't get a device today that doesn't run js392
- Non-blocking i/o286
- Ubiquitousness236
- Expressive191
- Extended functionality to web pages55
- Relatively easy language49
- Executed on the client side46
- Relatively fast to the end user30
- Pure Javascript25
- Functional programming21
- Async15
- Full-stack13
- Setup is easy12
- Its everywhere12
- JavaScript is the New PHP11
- Because I love functions11
- Like it or not, JS is part of the web standard10
- Can be used in backend, frontend and DB9
- Expansive community9
- Future Language of The Web9
- Easy9
- No need to use PHP8
- For the good parts8
- Can be used both as frontend and backend as well8
- Everyone use it8
- Most Popular Language in the World8
- Easy to hire developers8
- Love-hate relationship7
- Powerful7
- Photoshop has 3 JS runtimes built in7
- Evolution of C7
- Popularized Class-Less Architecture & Lambdas7
- Agile, packages simple to use7
- Supports lambdas and closures7
- 1.6K Can be used on frontend/backend6
- It's fun6
- Hard not to use6
- Nice6
- Client side JS uses the visitors CPU to save Server Res6
- Versitile6
- It let's me use Babel & Typescript6
- Easy to make something6
- Its fun and fast6
- Can be used on frontend/backend/Mobile/create PRO Ui6
- Function expressions are useful for callbacks5
- What to add5
- Client processing5
- Everywhere5
- Scope manipulation5
- Stockholm Syndrome5
- Promise relationship5
- Clojurescript5
- Because it is so simple and lightweight4
- Only Programming language on browser4
- Hard to learn1
- Test1
- Test21
- Easy to understand1
- Not the best1
- Easy to learn1
- Subskill #41
- Hard 彤0
Pros of Scala
- Static typing187
- Pattern-matching178
- Jvm177
- Scala is fun172
- Types138
- Concurrency95
- Actor library88
- Solve functional problems86
- Open source81
- Solve concurrency in a safer way80
- Functional44
- Fast24
- Generics23
- It makes me a better engineer18
- Syntactic sugar17
- Scalable13
- First-class functions10
- Type safety10
- Interactive REPL9
- Expressive8
- SBT7
- Case classes6
- Implicit parameters6
- Rapid and Safe Development using Functional Programming4
- JVM, OOP and Functional programming, and static typing4
- Object-oriented4
- Used by Twitter4
- Functional Proframming3
- Spark2
- Beautiful Code2
- Safety2
- Growing Community2
- DSL1
- Rich Static Types System and great Concurrency support1
- Naturally enforce high code quality1
- Akka Streams1
- Akka1
- Reactive Streams1
- Easy embedded DSLs1
- Mill build tool1
- Freedom to choose the right tools for a job0
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Cons of Hack
Cons of JavaScript
- A constant moving target, too much churn22
- Horribly inconsistent20
- Javascript is the New PHP15
- No ability to monitor memory utilitization9
- Shows Zero output in case of ANY error8
- Thinks strange results are better than errors7
- Can be ugly6
- No GitHub3
- Slow2
Cons of Scala
- Slow compilation time11
- Multiple ropes and styles to hang your self7
- Too few developers available6
- Complicated subtyping4
- My coworkers using scala are racist against other stuff2
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What is Hack?
What is JavaScript?
What is Scala?
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