clap 3.1: A step towards 4.0

1. clap-rs

   1 158 14,926 9.7 Rust

   A full featured, fast Command Line Argument Parser for Rust

   

   What cargo does is it will run its logic to discover at runtime the possible values based on the current environment (e.g. enumerating your tests). We are discussing supporting that for completions (#1232) but there are not plans for integrating it into validation at the moment due to a lot of complexity dealing with tracking state so the user's custom validator doesn't do work that then has to be thrown away and re-done.

2. InfluxDB

   influxdata.com featured

   InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.

   

3. structopt

   2 18 2,727 2.7 Rust

   Parse command line arguments by defining a struct.

   

   Something I've been giving thought to is how to help structopt users discover that clap3 is their upgrade path. We've put notices in the structopt repo but cargo upgrade and docs.rs won't say anything. See https://github.com/TeXitoi/structopt/issues/525 for more ideas we're considering.

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