Add simple comments explaining the array init

crates/concrete_ir/src/lowering.rs

@@ -1064,6 +1064,7 @@ fn lower_expression(
 
             let mut values = info.values.iter().enumerate();
 
+            // Extract the first value from the array init. It's type will be used as type hint for the following elements.
             let (first_idx, first_element) = values.next().expect("array init cannot be empty");
             let (first_value, element_type, _element_span) =
                 lower_expression(builder, first_element, element_type_hint)?;
@@ -1084,28 +1085,28 @@ fn lower_expression(
                 ),
             };
 
+            // Create and init local for the array init expression.
             let array_local = builder.add_local(Local::temp(ty.clone()));
-
             let place = Place {
                 local: array_local,
                 projection: Default::default(),
             };
-
             builder.statements.push(Statement {
                 span: None,
                 kind: StatementKind::StorageLive(array_local),
             });
 
+            // Assign the first value of the expression
             let mut first_place = place.clone();
             first_place
                 .projection
                 .push(PlaceElem::ConstantIndex(first_idx as u64));
-
             builder.statements.push(Statement {
                 span: Some(info.span),
                 kind: StatementKind::Assign(first_place, first_value),
             });
 
+            // Loop over the remaining values and assign them
             for (idx, element) in values {
                 let mut element_place = place.clone();
                 element_place