{
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  "path": "/t/sneak-peek-bolt-math/13766?page=2#post_26",
  "publishedAt": "2026-03-21T03:59:31.000Z",
  "site": "https://discourse.haskell.org",
  "textContent": "Not quite - `lawful` performs a check without performing the operation, and returns a boolean result as to whether or not it _would_ fail. You can then use that to choose to return `Nothing` if `Result r a b ~ Maybe c`, or throw an exception, etc.\n\nThis distinction is rather precise, I admit.",
  "title": "Sneak Peek: Bolt Math"
}