Hydroflow Surface Syntax
The natural way to write a Hydroflow program is using the Surface Syntax documented here.
It is a chained Iterator
-style syntax of operators built into Hydroflow that should be sufficient
for most uses. If you want lower-level access you can work with the Core API
documented in the Architecture section.
In this chapter we go over the syntax piece by piece: how to embed surface syntax in Rust and how to specify flows, which consist of data sources flowing through operators.
As a teaser, here is a Rust/Hydroflow "HELLO WORLD" program:
use hydroflow::hydroflow_syntax;
pub fn test_hello_world() {
let mut df = hydroflow_syntax! {
source_iter(vec!["hello", "world"])
-> map(|x| x.to_uppercase()) -> for_each(|x| println!("{}", x));
};
df.run_available();
}