Function sample1

sample/Slice-pattern.cpp:6–13

using namespace matchit;

void sample1()
{
  // Fixed size
  constexpr auto arr = std::array<int32_t, 3>{1, 2, 3};
  Id<int32_t> a, b, c;
  match(arr)(pattern | ds(1, _, _) = expr("starts with one"),
             pattern | ds(a, b, c) = expr("starts with something else"));
}

void sample2()
{