nidula 0.5.0

A lightweight Dart library for Rust-like Option/Result types. Supports exhaustive pattern matching and compile-time safe, chainable None/Err propagation.

0.5.0

• Made Option's T and Result's T and E nullable.
• Added extensions for all *orNull methods.
  • These methods are available only with non-nullable types, e.g., types extending Object.
• Added more pattern matching snippets.
• Added toJson methods and fromJson static methods.
• Updated documentation.

0.4.2

• Added snippets section.
• Improved documentation.
• Corrected information in docstring.

0.4.1

• Improved documentation.

0.4.0

• Changed return type of Option.mapOr, Option.mapOrElse, Result.mapOr, Result, mapOrElse to just U.
• Added Option.mapOrNull, Result.mapOrNull and Result.mapErrOrNull.
• Added Option.filter.
• Improved documentation.

0.3.0

• Added Option.unwrapOrNull, Result.unwrapOrNull, and Result.unwrapErrOrNull.
• Added zipOp.
• Renamed extensions so that they do not start with Result or Option.
  • When using autocomplete, this way they are less relevant.
• Removed Option.unwrapOrDefault and Result.unwrapOrDefault, which do not make sense in Dart due to absence of default value.

0.2.3

• Improved examples.

0.2.2

• Added match method to Option and Result.

0.2.1

• Added explanation on how to achieve functionality similar to Rust's From trait for error conversion before propagation.
• Updated documentation.

0.2.0

• Renamed try operator components.
  • unwrapOrPropagateErr and unwrapOrPropagateNone were renamed to try_.
  • syncErrPropagationScope/asyncErrPropagationScope and syncNonePropagationScope/asyncNonePropagationScope were renamed to syncTryScope/asyncTryScope.
  • Token variable names default to nt and et (previously t for both cases).
• Renamed from to fromNullable, added toNullable.
• Updated documentation.

0.1.3

• Improved documentation.

0.1.2

• Improved documentation.
• Improved docstring.
• Included e in unwrap's Panic message.
• Updated toString method of NonePropagation and ErrPropagation.

0.1.1

• Improved documentation.
  • Added "Parallel to Rust's try-operator implementation" subsections.
  • Added "Nested options and comparison to nullable types" subsection.
  • Fixed typos.

0.1.0

• Renamed most classes and methods and static methods. Names are longer, but much more obvious:
  • prop was renamed to unwrapOrPropagateErr and unwrapOrPropagateNone.
  • catchProp/catchPropAsync were renamed to syncErrPropagationScope/asyncErrPropagationScope and syncNonePropagationScope/asyncNonePropagationScope.
  • ResultPropError was renamed to ErrPropagation. Same for OptionPropError, which was renamed to NonePropagation.
  • ResultPropToken was renamed to ErrPropagationToken. Same for OptionPropToken, which was renamed to NonePropagationToken.
• Added Propagation abstract class.
• Improved and refactored tests.
• Improved docstring.
• Improved README.

0.0.3

• Added try-catch warning to README.
• Added more code to nidula_example.dart.
• Small fix to example in README.

0.0.2

• Uploaded again to fix repository URL detection.

0.0.1

• Initial version.
  • Forked from option_result, bringing the following enhancements:
    • Try-operator implementation rewritten from scratch.
      • Compile time safety through propagation tokens.
      • Chainable.
      • Simpler and clearer library-internal error handling strategy.
    • T and E types must extend Object (thus, non-null values are prohibited).
      • This enforces composition with Option types (Option<T>) instead of nullable types (T?).
    • Only T v and E e fields (and, thus, getters) are available.
      • value, val, err and error aliases were removed.
    • There is only a single public library to import components from.
    • Final modifiers to prevent extending Ok, Err, Some and None.
    • == operator takes all generic types into consideration when comparing Option objects and Result objects.
    • Added variable names to all function parameters in types
      • Callback autocomplete outputs e.g. (v) {} instead of (p0) {}