A few corrections.

Author: MathieuDutSik

.github/workflows/ci_05_schedule_number_theory_tests.yml

@@ -31,6 +31,7 @@ jobs:
         # We need specific version 3.3.9 because of a bug in 3.4.0 for algebraic data types.
         wget -q https://gitlab.com/libeigen/eigen/-/archive/3.3.9/eigen-3.3.9.tar.gz
         tar -xzf eigen-3.3.9.tar.gz
+        mkdir -p /home/runner/work/opt
         mv eigen-3.3.9 /home/runner/work/opt/eigen
         pwd
         echo "After eigen-3.3.9 set up"

src_basic/Namelist.h

@@ -687,6 +687,13 @@ struct FullNamelist {
   SingleBlock& get_block_mut(std::string const& key) {
     return get_key_value_mut(ListBlock, "ListBlock", key);
   }
+  bool has_block(std::string const& key) const {
+    if (ListBlock.count(key) == 0) {
+      return false;
+    } else {
+      return true;
+    }
+  }
   FullNamelist(std::map<std::string, SingleBlock> const& _ListBlock) {
     ListBlock = _ListBlock;
     FileName = "undefined";