Macro avocado::filter_and

macro_rules! filter_and {
    ($($query:expr,)*) => { ... };
    ($($query:expr),*) => { ... };
}

Constructs an $and query. Similar to plain filter!, but takes a list of subqueries and wraps them in a document with the key $and, because such a query can only appear at the top level, and not as a field specifier.

Example:

let between_10_and_20_inclusive = filter_and! {
    filter!{ foo: gte(10) },
    filter!{ foo: lte(20) },
};