diff --git a/module/core/former/src/container.rs b/module/core/former/src/container.rs
index bdf22e02da..16a65403e9 100644
--- a/module/core/former/src/container.rs
+++ b/module/core/former/src/container.rs
@@ -136,7 +136,8 @@ pub trait ContainerAssign
 
   /// Agging elements to the container.
   fn assign< Elements >( &mut self, elements : Elements ) -> usize
-  where Elements : core::iter::Iterator< Item = Self::Element >;
+  where
+    Elements : IntoIterator< Item = Self::Element >;
 
 }
 
@@ -146,7 +147,8 @@ impl< T > ContainerAssign for collection_tools::Vec< T >
 
   #[ inline( always ) ]
   fn assign< Elements >( &mut self, elements : Elements ) -> usize
-  where Elements : core::iter::Iterator< Item = Self::Element >
+  where
+    Elements : IntoIterator< Item = Self::Element >
   {
     let initial_len = self.len();
     self.extend( elements );
@@ -163,7 +165,7 @@ where
 
   fn assign< Elements >( &mut self, elements : Elements ) -> usize
   where
-    Elements : IntoIterator< Item = Self::Element >,
+    Elements : IntoIterator< Item = Self::Element >
   {
     let initial_len = self.len();
     self.extend( elements );
@@ -179,7 +181,7 @@ where
 
   fn assign< Elements >( &mut self, elements : Elements ) -> usize
   where
-    Elements : IntoIterator< Item = Self::Element >,
+    Elements : IntoIterator< Item = Self::Element >
   {
     let initial_len = self.len();
     self.extend( elements );
diff --git a/module/core/former/src/vector.rs b/module/core/former/src/vector.rs
index 0d533827b5..5a39a4d98d 100644
--- a/module/core/former/src/vector.rs
+++ b/module/core/former/src/vector.rs
@@ -1,14 +1,5 @@
 use super::*;
 
-// #[ cfg( feature = "use_alloc" ) ]
-// extern crate alloc;
-// #[ cfg( feature = "use_alloc" ) ]
-// #[ allow( unused_imports ) ]
-// use alloc::vec::Vec;
-// #[ cfg( not( feature = "no_std" ) ) ]
-// #[ allow( unused_imports ) ]
-// use std::vec::Vec;
-
 #[ allow( unused ) ]
 use collection_tools::Vec;
 
@@ -191,3 +182,25 @@ where
   }
 
 }
+
+//
+
+impl< E, Container, Context, End > FormerBegin< Container, Context >
+for VectorSubformer< E, Container, Context, End >
+where
+  End : ToSuperFormer< Container, Context >,
+  Container : VectorLike< E > + Default,
+{
+  type End = End;
+
+  #[ inline( always ) ]
+  fn _begin
+  (
+    context : core::option::Option< Context >,
+    on_end : End,
+  ) -> Self
+  {
+    Self::begin( context, None, on_end )
+  }
+
+}
diff --git a/module/core/former/tests/inc/former_tests/a_containers_with_runtime_manual.rs b/module/core/former/tests/inc/former_tests/a_containers_with_runtime_manual.rs
index 045ff7a7be..c8611bdfc2 100644
--- a/module/core/former/tests/inc/former_tests/a_containers_with_runtime_manual.rs
+++ b/module/core/former/tests/inc/former_tests/a_containers_with_runtime_manual.rs
@@ -147,30 +147,29 @@ where
     on_end.call( container, context )
   }
 
-  // #[ inline( always ) ]
-  // pub fn _vec_1< Former2 >( self ) ->
-  // Former2
-  // where
-  //   Former2 : former::FormerBegin< Vec< String >, Self, End = former::ToSuperFormerWrapper< Vec< String >, Self > >,
-  //   // FieldContainer : ContainerAssign,
-  // {
-  //   let on_end = | formed : Vec< String >, super_former : core::option::Option< Self > | -> Self
-  //   {
-  //     let mut super_former = super_former.unwrap();
-  //     if super_former.container.vec_1.is_none()
-  //     {
-  //       super_former.container.vec_1 = Some( Default::default() );
-  //     }
-  //     if let Some( ref mut field ) = super_former.container.vec_1
-  //     {
-  //       former::ContainerAssign::assign( field, formed );
-  //     }
-  //     super_former
-  //   };
-  //   Former2::_begin( Some( self ), former::ToSuperFormerWrapper::new( on_end ) )
-  // }
+  #[ inline( always ) ]
+  pub fn __vec_1< Former2 >( self ) ->
+  Former2
+  where
+    Former2 : former::FormerBegin< Vec< String >, Self, End = former::ToSuperFormerWrapper< Vec< String >, Self > >,
+  {
+    let on_end = | formed : Vec< String >, super_former : core::option::Option< Self > | -> Self
+    {
+      let mut super_former = super_former.unwrap();
+      if super_former.container.vec_1.is_none()
+      {
+        super_former.container.vec_1 = Some( Default::default() );
+      }
+      if let Some( ref mut field ) = super_former.container.vec_1
+      {
+        former::ContainerAssign::assign( field, formed );
+      }
+      super_former
+    };
+    Former2::_begin( Some( self ), former::ToSuperFormerWrapper::new( on_end ) )
+  }
 
-  pub fn vec_1( mut self ) -> the_module::VectorSubformer
+  pub fn vec_1( self ) -> the_module::VectorSubformer
   <
     String,
     Vec< String >,
@@ -178,16 +177,27 @@ where
     impl the_module::ToSuperFormer< Vec< String >, Self >,
   >
   {
-    let container = self.container.vec_1.take();
-    let on_end = | container : Vec< String >, super_former : core::option::Option< Self > | -> Self
-    {
-      let mut super_former = super_former.unwrap();
-      super_former.container.vec_1 = Some( container );
-      super_former
-    };
-    the_module::VectorSubformer::< String, Vec< String >, Self, _ >::begin( Some( self ), container, on_end )
+    self.__vec_1::< the_module::VectorSubformer::< _, _, _, _ > >()
   }
 
+  // pub fn vec_1( mut self ) -> the_module::VectorSubformer
+  // <
+  //   String,
+  //   Vec< String >,
+  //   Self,
+  //   impl the_module::ToSuperFormer< Vec< String >, Self >,
+  // >
+  // {
+  //   let container = self.container.vec_1.take();
+  //   let on_end = | container : Vec< String >, super_former : core::option::Option< Self > | -> Self
+  //   {
+  //     let mut super_former = super_former.unwrap();
+  //     super_former.container.vec_1 = Some( container );
+  //     super_former
+  //   };
+  //   the_module::VectorSubformer::< String, Vec< String >, Self, _ >::begin( Some( self ), container, on_end )
+  // }
+
   pub fn hashmap_strings_1( mut self ) -> the_module::HashMapSubformer
   <
     String,