19

2022-11-12 21:22:07 -08:00
parent 3337b9f536
commit c3b3de5416
4 changed files with 62 additions and 0 deletions
--- a/intcode/src/Machine.cpp
+++ b/intcode/src/Machine.cpp
@@ -11,6 +11,12 @@ auto Machine::At(std::size_t const i) -> ValueType & {
  return i < rom_.size() ? rom_[i] : ram_[i];
 }

+auto Machine::At(std::size_t const i) const -> ValueType {
+  if (i < rom_.size()) return rom_[i];
+  if (auto it = ram_.find(i); it != ram_.end()) { return it->second; }
+  return 0;
+}
+
 auto Machine::Rel(std::size_t const i) -> ValueType & {
  return At(base_ + i);
 }