docs/
└── tutorials/
└── scala/
├── index.mdx
├── 01-introduction/
│ ├── what-is-scala.mdx
│ ├── why-learn-scala.mdx
│ ├── scala-features.mdx
│ ├── scala-vs-java.mdx
│ ├── scala-2-vs-scala-3.mdx
│ └── scala-use-cases.mdx
├── 02-installation-and-setup/
│ ├── install-jdk.mdx
│ ├── install-scala.mdx
│ ├── install-scala-cli.mdx
│ ├── install-intellij-idea.mdx
│ ├── scala-repl.mdx
│ ├── sbt-setup.mdx
│ └── first-scala-program.mdx
├── 03-scala-fundamentals/
│ ├── program-structure.mdx
│ ├── variables-and-values.mdx
│ ├── data-types.mdx
│ ├── type-inference.mdx
│ ├── operators.mdx
│ ├── strings-and-interpolation.mdx
│ ├── tuples.mdx
│ ├── ranges.mdx
│ └── expressions-and-statements.mdx
├── 04-control-flow/
│ ├── if-expressions.mdx
│ ├── match-expressions.mdx
│ ├── for-expressions.mdx
│ ├── while-loops.mdx
│ ├── guards-and-patterns.mdx
│ ├── indentation-and-braces.mdx
│ └── control-flow-best-practices.mdx
├── 05-functions-and-methods/
│ ├── defining-methods.mdx
│ ├── parameters-and-return-types.mdx
│ ├── default-and-named-arguments.mdx
│ ├── multiple-parameter-lists.mdx
│ ├── anonymous-functions.mdx
│ ├── higher-order-functions.mdx
│ ├── methods-vs-functions.mdx
│ └── recursion.mdx
├── 06-collections/
│ ├── collection-overview.mdx
│ ├── lists-and-vectors.mdx
│ ├── sets.mdx
│ ├── maps.mdx
│ ├── arrays.mdx
│ ├── immutable-and-mutable-collections.mdx
│ ├── map-filter-and-fold.mdx
│ ├── collection-transformations.mdx
│ └── lazy-collections.mdx
├── 07-object-oriented-programming/
│ ├── classes-and-objects.mdx
│ ├── constructors-and-parameters.mdx
│ ├── fields-and-methods.mdx
│ ├── inheritance.mdx
│ ├── abstract-classes.mdx
│ ├── traits.mdx
│ ├── companion-objects.mdx
│ ├── enums.mdx
│ └── object-composition.mdx
├── 08-functional-programming/
│ ├── functional-programming-overview.mdx
│ ├── pure-functions.mdx
│ ├── immutability.mdx
│ ├── function-composition.mdx
│ ├── currying-and-partial-application.mdx
│ ├── map-flatmap-and-fold.mdx
│ ├── options-and-null-handling.mdx
│ ├── either-and-error-modeling.mdx
│ ├── for-comprehensions.mdx
│ └── functional-design-principles.mdx
├── 09-pattern-matching-and-algebraic-data-types/
│ ├── pattern-matching.mdx
│ ├── case-classes.mdx
│ ├── enums-and-sum-types.mdx
│ ├── sealed-traits.mdx
│ ├── product-types.mdx
│ ├── extractor-patterns.mdx
│ ├── typed-patterns.mdx
│ └── exhaustive-matching.mdx
├── 10-type-system/
│ ├── static-typing.mdx
│ ├── generic-types.mdx
│ ├── variance.mdx
│ ├── upper-and-lower-type-bounds.mdx
│ ├── type-classes.mdx
│ ├── givens-and-using.mdx
│ ├── extension-methods.mdx
│ ├── opaque-types.mdx
│ ├── union-and-intersection-types.mdx
│ ├── match-types.mdx
│ └── contextual-abstractions.mdx
├── 11-error-handling/
│ ├── exceptions.mdx
│ ├── option-for-optional-values.mdx
│ ├── either-for-errors.mdx
│ ├── try-and-failure.mdx
│ ├── custom-error-types.mdx
│ ├── validation-patterns.mdx
│ └── error-handling-best-practices.mdx
├── 12-implicits-and-scala-3-contexts/
│ ├── scala-2-implicit-overview.mdx
│ ├── scala-3-given-instances.mdx
│ ├── using-clauses.mdx
│ ├── contextual-functions.mdx
│ ├── extension-methods.mdx
│ └── migration-notes.mdx
├── 13-concurrency-and-asynchronous/
│ ├── jvm-concurrency-overview.mdx
│ ├── futures-and-promises.mdx
│ ├── execution-contexts.mdx
│ ├── parallel-collections.mdx
│ ├── thread-safety.mdx
│ ├── cats-effect-introduction.mdx
│ ├── zio-introduction.mdx
│ └── asynchronous-design-patterns.mdx
├── 14-files-and-serialization/
│ ├── file-reading-and-writing.mdx
│ ├── paths-and-directories.mdx
│ ├── csv-processing.mdx
│ ├── json-processing.mdx
│ ├── json-library-comparison.mdx
│ ├── configuration-files.mdx
│ └── environment-variables.mdx
├── 15-build-tools-and-projects/
│ ├── scala-cli-projects.mdx
│ ├── sbt-project-structure.mdx
│ ├── build-sbt-basics.mdx
│ ├── dependencies-and-repositories.mdx
│ ├── multi-module-projects.mdx
│ ├── testing-and-build-tasks.mdx
│ ├── publishing-libraries.mdx
│ └── cross-building-scala-versions.mdx
├── 16-testing-and-code-quality/
│ ├── testing-fundamentals.mdx
│ ├── scala-test.mdx
│ ├── munit.mdx
│ ├── property-based-testing.mdx
│ ├── mocking-and-test-doubles.mdx
│ ├── integration-testing.mdx
│ ├── formatting-and-scalafmt.mdx
│ ├── static-analysis.mdx
│ └── continuous-integration.mdx
├── 17-java-interoperability/
│ ├── scala-on-the-jvm.mdx
│ ├── calling-java-from-scala.mdx
│ ├── calling-scala-from-java.mdx
│ ├── java-collections-interop.mdx
│ ├── jvm-annotations.mdx
│ └── java-library-integration.mdx
├── 18-backend-development/
│ ├── scala-backend-overview.mdx
│ ├── http-api-fundamentals.mdx
│ ├── http4s-introduction.mdx
│ ├── akka-and-pekko-overview.mdx
│ ├── database-access.mdx
│ ├── doobie-introduction.mdx
│ ├── authentication-and-authorization.mdx
│ ├── logging-and-monitoring.mdx
│ └── backend-deployment.mdx
├── 19-data-engineering/
│ ├── scala-for-data-engineering.mdx
│ ├── spark-introduction.mdx
│ ├── spark-dataframes.mdx
│ ├── spark-sql.mdx
│ ├── transformations-and-aggregations.mdx
│ ├── batch-processing.mdx
│ └── data-pipeline-project.mdx
├── 20-performance-and-advanced-topics/
│ ├── jvm-memory-basics.mdx
│ ├── profiling-and-benchmarking.mdx
│ ├── allocation-and-collections.mdx
│ ├── inline-and-erased-definitions.mdx
│ ├── macros-overview.mdx
│ ├── compile-time-metaprogramming.mdx
│ └── performance-best-practices.mdx
├── 21-projects/
│ ├── command-line-calculator.mdx
│ ├── expense-tracker.mdx
│ ├── file-processing-tool.mdx
│ ├── rest-api-service.mdx
│ ├── concurrent-web-client.mdx
│ ├── spark-data-pipeline.mdx
│ └── capstone-project.mdx
├── reference/
│ ├── scala-cheatsheet.mdx
│ ├── syntax-reference.mdx
│ ├── collections-reference.mdx
│ ├── type-system-reference.mdx
│ ├── scala-cli-commands.mdx
│ ├── sbt-command-reference.mdx
│ ├── common-errors.mdx
│ ├── glossary.mdx
│ └── official-resources.mdx
└── assets/
├── images/
├── diagrams/
└── examples/