Lambda

The anonymous definitions can be defined and instantly invoked at the same time. The definitions are unique and every time the new definition is created.

• They don't have a name
• They are unique
• They don't have arguments

Only the elements of Flow can be used in lambdas The actions always have to be defined explicitly.

impl job();

root main {
    // lambda invocation
    sequence {
        job()
        job()
        job()
    }
    // another lambda invocation
    fallback {
        sequence {
            job()
            job()   
        }
        // the second level of lambda
        sequence {
            job()
            // also lambda, but the backets are omitted. 
            r_sequence job()
        }
    }

}

Parameter

Lambda can be used as parameters as well.

impl savepoint();
impl job();

sequence wrapper(item:tree){
    savepoint()
    item(..)
    savepoint()
}

root main sequence {
    wrapper(
        sequence {
            job()
            job()
            job()
        }
    )
    wrapper(
        item = 
            fallback {
                job()
                job()
                job()
            }
    )
    
}