Porting my 2016 Rust project from getopts to clap, and it's amazing how far the ecosystem has come.
clap gives me a nicer help, automatic value validation, and can even generate completions for shells!
First screenshot is getopts, second is clap.
miniblog.
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What are the most interesting upcoming scripting languages? Scripting remains an important part of the programming language ecosystem.
Optimise time to first feature. Allow mutation of the running system to experiment. Interactive inspection of data.
It's always seemed odd to me that the Rust stdlib is so lean (no random numbers, regex, HTTP) yet clippy is so big (correctness, performance, style preferences, even 'too many arguments').
Maybe it's because cargo is mature but clippy doesn't have an extension ecosystem?
On building a full-featured REPL, handling errors, and the different REPL APIs in the Clojure ecosystem: