Macro create 

macro_rules! create {
    ($client:expr; $inst:expr) => { ... };
}

Convenience macro for put with ConditionExpression parameter to ensure records are only “created” and not overwritten when inserting new records into the table.

Examples

create!(
    client;
    Task {
        project: "foo_project".to_string(),
        employee: "e42069".to_string(),
        description: "nothin' but chillin' 20's".to_string(),
        some_metadata: "baz".to_string(),
        ..Default::default()
    }
)?;