Scala overview
Scala combines object-oriented and functional programming in one concise, high-level language. Scala's static types help avoid bugs in complex applications, and its JVM and JavaScript runtimes let you build high-performance systems with easy access to huge ecosystems of libraries.
Seamless java interop
Scala runs on the JVM, so Java and Scala stacks can be freely mixed for totally seamless integration.
Type inference
So the type system doesn’t feel so static. Don’t work for the type system. Let the type system work for you!
Concurrency & distribution
Use data-parallel operations on collections, use actors for concurrency and distribution, or futures for asynchronous programming.
Traits
Combine the flexibility of Java-style interfaces with the power of classes. Think principled multiple-inheritance.
Pattern matching
Think "switch" on steroids. Match against class hierarchies, sequences, and more.
Higher-order functions
Functions are first-class objects. Compose them with guaranteed type safety. Use them anywhere, pass them to anything.
What’s new in version 3.4.0
Updated on Mar 21 2024
Highlights of the release
- Make polymorphic functions more efficient and expressive #17548
- SIP-56: Better foundations for match types #18262
- Make SIP 54 (Multi-Source Extension Overloads) a standard feature #17441
- Value parameter inference for polymorphic lambdas #18041
- Add @publicInBinary annotation and -WunstableInlineAccessors linting flag #18402
- Stabilize Quotes defn.PolyFunction #18480
- Stabilize Quotes Flags.AbsOverride #18482
- Add -experimental compiler flags #18571
- Stabilize SIP-53 (quote pattern explicit type variable syntax) #18574
- Add reflect TypeRepr.dealiasKeepOpaques #18583
- Add attributes section to TASTy and use it for Stdlib TASTy #18599
- Error when reading class file with unknown newer jdk version #18618
- Add support for xsbti.compile.CompileProgress #18739
- Improve type inference for functions like fold #18780
- Improve error message for mismatched tasty versions, allow configuration of header unpickler #18828
- In 3.4 make refutable patterns in a for comprehension an error #18842
- Disallow use of PolyFunction in user code #18920
- Store source file in TASTY attributes #18948
- First step to pipelining support - enable reading Java symbols from TASTy #19074
- Activate constrainResult fix in 3.4 #19253
- Parallelise JVM backend - Scala 2 port #15392
- Avoid generating given definitions that loop #19282
Information
App requirements
- Intel 64
- Mac OS X 10.4 or later
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