`unfmt`: A compile-time pattern matching library that reverses the interpolation process of `format!`.

A compile-time pattern matching library that reverses the interpolation process of `format!`. - mathematic-inc/unfmt

8 comments

How does it handle multiple potential outcomes? Example: unformat!("a {} b {} c", "a x b b y c") Would it return Some(("x b", "y")) or Some(("x", "b y"))?
I love the concept! I recently wanted something just like this for a Flutter app I was making to parse a filename into a user defined format i.e.

2024-04-12.txt with %Y-%M-%D.txt to {year: 2024, month: 04, day: 12}

I'll certainty be using this the next time I need anything like that in Rust though.
- Off-topic, but I recognise your name. Thank you for the Daily Diary App! I'm a huge fan, I use it every day for my gratitude routine.
  
  Wow, I've never had anyone recognise my name for something I've made! Thank you so much and I'm glad you're enjoying it 😁
That's just brilliant.
What am I missing? Seems like it just puts the parameter in Some?

Anti Commercial-AI license
- You must've read that wrong.
  
  The first example, but formatted differently:
  
  let value = "My name is Rho."; let result = unformat!("My {} is {}.", value);
  
  Now, result contains:
  
  Some(("name", "Rho"))
  
  ...because the words "name" and "Rho" in value happened to be at the position of the {}-slots in the unformat!()-pattern.
  
  Oh yeah! Thanks. It's been a long day.
  
  Anti Commercial-AI license

8 comments

unfmt: A compile-time pattern matching library that reverses the interpolation process of format!.