Linq in Rust

Linq query in Rust (created by macros).

• Inspired by LINQ in .NET.
• What's LINQ

This project is under development!

Quick Start

This is an example:

use linq::linq;

fn try_linq(){
    let x = 1..100;

    let mut y: Vec<i32> = x.clone().filter(|p| p <= &5).collect();
    y.sort_by_key(|t| -t);
    let y: Vec<i32> = y.into_iter().map(|t| t * 2).collect();

    let e: Vec<i32> =
        linq!(from p; in x.clone(); where p <= &5; orderby -p; select p * 2).collect();
    
    assert_eq!(e, y);
}

If you are familier with LINQ in C#, you will find this easy to use.

Linq Keywords

• from
• in
• select
• where
• orderby

Query Operators

All italic items mean they are not in roadmap. Happy for your suggestions.

• where => filter
• select => map
• select_many
• skip => skip
• skip_while => skip_while
• take => take
• take_while => take_while
• join
• group_join
• concate => chain
• order_by
• order_by_descending
• then_by
• then_by_descending
• reverse => rev
• group_by
• distinct
• union
• intersect
• except
• first => next
• single
• element_at => nth
• all => all
• any => any
• contains
• count => count
• sum
• min
• max
• average
• aggregate

Development

We need more unit-test samples. If you have any ideas, open issues to tell us.

$ cargo test