Builder

[matthewleon]

Would there be any interest in a Builder API?

[michaelficarra]

Go on...

[matthewleon]

Like this: https://pursuit.purescript.org/packages/purescript-record/0.2.6/docs/Data.Record.Builder

Or Java's StringBuilder.

You lazily accumulate mutations (concatenations, to start) to apply to a String inside of a smart-constructed StringBuilder type. Then you apply your build at the end, which applies the mutations serially to a copy of whatever base String you have (often the empty string). It allows you to do ST-like things with a more user-friendly API.

[matthewleon]

It's probably niche enough to deserve a separate lib rather than living in here. Feel free to reopen if you disagree.