Examples of declarative style in Rust

• lazy-iterators

  2 22 0.0 C++

  Lightweight iterators for various sets where the elements are computed on demand.

Looking at the first example about iterators. I agree that Rust's Iterator API is awesome. But is there any fundamental reason you couldn't write a similar one in C++? (Example: https://github.com/cwzx/lazy-iterators) We know the STL made different choices, and it's also just much older, when "declarative" expressions weren't quite as in vogue. The example with find_if is pretty damn close to as declarative as the Rust version. The only "loss" is that the STL algorithms are eager, so you have to combine the nth feature as part of the predicate. You could even combine the if and returns with a ternary to make it more expressiony. And as /u/MysteryManEusine wrote, C++20's ranges makes it just as declarative. Also, using the matches! macro feels little like cheating- without it, the lambda is exactly the same as the C++ version. Both are pretty declarative anyway.

• patterns

  63 7,699 7.5 Handlebars

  A catalogue of Rust design patterns, anti-patterns and idioms

  

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• json

  93 40,332 7.7 C++

  JSON for Modern C++

As for the serialization stuff, something kind of similar does exist in C++: https://github.com/nlohmann/json#simplify-your-life-with-macros. Remember that serde is not part of Rust. It's a third party library. As is structopt.

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