Macro attr_list 

macro_rules! attr_list {
    [$($attr:ty),*] => { ... };
    (@nest) => { ... };
    (@nest $head:ty $(, $tail:ty)*) => { ... };
}

Builds the nested tuple type used to represent a list of AttributeDefinition types.

attr_list![A, B, C] expands to the right-nested tuple (A, (B, (C, ()))), which is the representation expected by AttributeList and the DynamoDBItem::AdditionalAttributes associated type.

You rarely need to invoke this macro directly — dynamodb_item! calls it internally. It is exposed for use in manual DynamoDBItem implementations where you need to spell out the AdditionalAttributes type explicitly.

Syntax

attr_list![AttrType1, AttrType2, ...]

An empty list attr_list![] expands to ().

Examples

use dynamodb_facade::attr_list;

// Equivalent to (ItemType, (Expiration, ()))
type MyAttrs = attr_list![ItemType, Expiration];