What's new in ReSharper 2023.2

• C#12 preview support: primary constructors support for non-record classes and structs.

• AI Assistant.

• Predictive debugger.

• Interactive debugger adornments for intermediate results in LINQ expressions.

• New code inspections with corresponding quick-fixes to report and fix: redundant nullable directive, return of a variable captured by 'using' statement, return of a task produced by 'using'-captured object, conflict of the discard and a variable named _.

• New inlay hints in C# for component names of tuples and deconstruction patterns, discard type names, description of warnings disabled or restored with #pragma, implicit return or continue created by a local function at the end of a block.

• Improved navigation from the var to possible underlying types.

• Improved support of raw strings (new code inspections, quick-fixes, context actions, and typing assistance)

• New code inspections and navigation actions in Entity-Framework-related contexts.

• Ability to generate unit test stubs for classes and to navigate between tests and tested code.

• Ability to compare two assemblies.

• New features in C++:

  • Safe Delete refactoring.

  • C++23 support: if consteval, static operator() and operator[], and C++23 standard library modules.

  • C++20 support: [[no_unique_address]] attribute, implementation of C++20 defect report for char8_t, and polished modules support, including recognizing .cppm files as module interfaces and experimental support for modules located outside the project folder.

  • Unreal Engine: performance improvements for indexing Blueprints, smart completion for wrapper types with standard assignment semantics, and support for the UE_INLINE_GENERATED_CPP_BY_NAME macro.

  • New inspections: Redundant dereferencing and taking address, Redundant template arguments, ISO C++ forbids forward enum declarations without underlying type.

  • Improved code completion when the type is restricted by a concept or a trait.

  • Gutter marks for recursive calls.

  • More consistent and straightforward Go to Declaration.

  • Updated bundled clang-tidy and clang-format binaries.

  • Context actions to move a template parameter constraint to the requires-clause and vice versa.

  • Improved compatibility with GCC and Clang compilers and libc++/libstdc++ standard libraries.