1299 - stop using [] in any vector

Useful check:

  $ grep "[^ '\"]\[[^\"]" *.cc \
    |perl -pwe 's/\Wargv\[|\WTests\[|\Wframe\[|\WMemory\[|\WName\[|\WSurrounding_space\[|\WRecipe\[|\WType\[|\WRecipe_number\[|\WType_number\[|\WBefore_fragments\[|\WAfter_fragments\[//g' \
    |perl -pwe 's/\Wargv\[|\WTests\[|\Wframe\[|\WMemory\[|\WName\[|\WSurrounding_space\[|\WRecipe\[|\WType\[|\WRecipe_number\[|\WType_number\[|\WBefore_fragments\[|\WAfter_fragments\[//g' \
    |grep '[^ ]\['

1 files changed, 1 insertions, 1 deletions

diff --git a/030container.cc b/030container.cc
index 071e3ea5..edde3395 100644
--- a/030container.cc
+++ b/030container.cc
@@ -123,7 +123,7 @@ case GET: {
   trace("run") << "address to copy is " << src;
   assert(Type[base_type].kind == container);
   assert(Type[base_type].elements.size() > offset);
-  type_number src_type = Type[base_type].elements[offset].at(0);
+  type_number src_type = Type[base_type].elements.at(offset).at(0);
   trace("run") << "its type is " << src_type;
   reagent tmp;
   tmp.set_value(src);