Hello everyone! This is deal.II newsletter #343. It automatically reports recently merged features and discussions about the deal.II finite element library.
## Below you find a list of recently proposed or merged features: #19234: Mark some comparisons 'if constexpr' (proposed by kronbichler) https://github.com/dealii/dealii/pull/19234 #19233: Fix: Ensure array consistency for auxiliary vectors (proposed by rzhang20) https://github.com/dealii/dealii/pull/19233 #19232: Fix a typo in a comment (proposed by kronbichler) https://github.com/dealii/dealii/pull/19232 #19231: Fix a compile warning (proposed by kronbichler) https://github.com/dealii/dealii/pull/19231 #19230: Update links in CONTRIBUTING.md (proposed by kronbichler) https://github.com/dealii/dealii/pull/19230 #19228: Some updates to step-7. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19228 #19227: Optimize SolverMinRes::solve by reducing redundant divisions and square roots (proposed by rzhang20) https://github.com/dealii/dealii/pull/19227 #19226: Make a variable 'const'. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19226 #19225: Fix TrilinosWrappers::Vector::sadd() when the argument is a vector with ghost entries. (proposed by bangerth) https://github.com/dealii/dealii/pull/19225 #19224: Some additions to the documentation of step-3. (proposed by bangerth) https://github.com/dealii/dealii/pull/19224 #19223: Disable -Wmisleading-indentation. (proposed by bangerth) https://github.com/dealii/dealii/pull/19223 #19222: Use 'writable', not 'writeable'. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19222 #19221: Project BC div-conf in 3D: Avoid temp vector of global problem size (proposed by kronbichler) https://github.com/dealii/dealii/pull/19221 #19220: Remove a flippant comment. (proposed by bangerth) https://github.com/dealii/dealii/pull/19220 #19219: Re-enable zeroing out vectors with ghost elements. (proposed by bangerth) https://github.com/dealii/dealii/pull/19219 #19218: Refactor BlockSparseMatrixEZ to derive from BlockMatrixBase (proposed by FelixKimmerle) https://github.com/dealii/dealii/pull/19218 #19216: Remove an unused variable. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19216 #19215: p::f::T: sort a vector instead of using std::map. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19215 #19214: `VectorTools::compute_mean_value()`: avoid allocation. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19214 #19213: tests/performance/timing_step_3: add vmult() timing (proposed by tjhei) https://github.com/dealii/dealii/pull/19213 #19212: `ReferenceCell`: use `MappingP1` in another place. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19212 #19211: `ComputeDiagonalHelper`: avoid reallocating scratch arrays. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19211 #19210: `MappingFEField`: `fix get_vertices()`. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19210 #19209: DoFAccessor: use a bigger temporary array. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19209 #19208: Make `DoFAccessor::get_interpolated_dof_values()` work with `ArrayView`. (proposed by drwells) https://github.com/dealii/dealii/pull/19208 #19206: Add tutorial step-101 (proposed by lucia-agullo-marti) https://github.com/dealii/dealii/pull/19206 #19204: Fix `refinement_06` (proposed by AndSte01; merged) https://github.com/dealii/dealii/pull/19204 #19201: CI: maybe fix clang-module build (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/19201 #19200: More cleaning up of connectivity.h. (proposed by bangerth) https://github.com/dealii/dealii/pull/19200 #19199: Choose better name for ROL interface class. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/19199 #19195: Implement isotropic refinement of Wedges. (proposed by AndSte01; merged) https://github.com/dealii/dealii/pull/19195 #19193: Arkode - prepend namespaces inside the assertion macros (proposed by vovannikov; merged) https://github.com/dealii/dealii/pull/19193 #19192: ReferenceCell: make things consistent with connectivity.h. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/19192 #19191: Extract implementations of the Arkode wrapper and some of its internal classes to template files (proposed by vovannikov; merged) https://github.com/dealii/dealii/pull/19191 #19178: More changes to connectivity.h. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/19178 #19161: Rework algorithms in `execute_refinement_isotropic(...)` to also work with cells that have multiple face types. (proposed by AndSte01; merged) https://github.com/dealii/dealii/pull/19161 #19133: VTKWrappers utilities -- part V -- GridTools::parallel_to_serial_vertex_indices (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/19133 ## And this is a list of recently opened or closed discussions: #19229: Refactor `maybe_update_jacobian_pushed_forward_grads` to use `dealii::ndarray` for consistency (opened) https://github.com/dealii/dealii/issues/19229 #19217: Make `FEPointEvaluation` work with simplices (opened) https://github.com/dealii/dealii/issues/19217 #19207: Optimize SolverMinRes::solve by reducing redundant divisions and square roots (opened) https://github.com/dealii/dealii/issues/19207 #19205: Allow v=0 even for vectors that have ghost elements? (opened) https://github.com/dealii/dealii/issues/19205 #19203: Regression tester regressed 4b2f91 (opened) https://github.com/dealii/dealii/issues/19203 #19202: Disable -Wmisleading-indentation? (opened) https://github.com/dealii/dealii/issues/19202 #19198: Wrap `std::inplace_vector` (opened) https://github.com/dealii/dealii/issues/19198 #19197: Wedge reference cell has unfortunate documentation. (opened) https://github.com/dealii/dealii/issues/19197 #19196: Regression tester regressed 6e0ef8 (opened) https://github.com/dealii/dealii/issues/19196 #19194: Sundials - discontinue compatibility with versions <6 (opened) https://github.com/dealii/dealii/issues/19194 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/recent_changes.html. Thanks for being part of the community! Let us know about questions, problems, bugs or just share your experience by writing to [email protected], or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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