Here’s the translation of the Go code to Scheme, formatted in Markdown suitable for Hugo:
Our first example demonstrates how to implement command-line subcommands in Scheme. This is similar to how tools like git have multiple subcommands, each with its own set of flags.
This Scheme program implements a basic command-line subcommand structure. Here’s how it works:
We define a main parse-args function that handles the subcommands.
For each subcommand (foo and bar), we define separate parsing functions (parse-foo-args and parse-bar-args).
The parse-args function checks the first argument to determine which subcommand to run.
Each subcommand parser function processes its specific flags and arguments.
To run this program, save it to a file (e.g., subcommands.scm) and use your Scheme interpreter. Here are some example invocations:
Note that Scheme doesn’t have built-in command-line argument parsing libraries like Go’s flag package, so we’ve implemented a simple parsing mechanism. In a real-world scenario, you might want to use a more robust command-line parsing library for Scheme if available.