of the Belgian C++ Users Group (BeCPP) C++204 Agenda  C++23 Core Language  Explicit Object Parameters  if consteval  Multidimensional Subscript Operator  Attributes on Lambda-Expressions  Literal Garbage Collection SupportC++23 Core Language6 Agenda  C++23 Core Language  Explicit Object Parameters  if consteval  Multidimensional Subscript Operator  Attributes on Lambda-Expressions  Literal Containers Heterogeneous Erasure  Removed Features  Garbage Collection Support7 Explicit Object Parameters  Instead of implicit this, explicitly specify the object parameter  Example: class Cell

Initializers  Spaceship Operator <=>  Range-based for Loop Initializer  Non-Type Template Parameters  [[likely]] and [[unlikely]]  Calendars & Timezones  std::span  Feature Test Macros  Doumler Friday, September 18 • 12:00Concepts20 Concepts  Named requirements to constrain template parameters  Predicates evaluated at compile time21 Concepts  Example of a concept definition: templateParameters  Non-type template parameters had limitations, e.g. no string literals  C++20 relaxes these limitations

block_size; add_gpu<<>>(N, x, y); // … } Ok, about the kernel parameters 9 |__global__ void add_gpu(int n, float* x, float* y) { int i0 = blockIdx.x * blockDim.x "[CUDA]") { // … add_gpu<<>>(N, x, y); // … } Ok, about the kernel parameters 10 |Memory“In a typical PC or cluster node today, the memories of the CPU and GPU are physically