{
  "$type": "site.standard.document",
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  "path": "/t/conduit-to-yield-first-lines-from-file-without-leaking-space-or-file-handles/14030#post_16",
  "publishedAt": "2026-05-11T11:44:21.000Z",
  "site": "https://discourse.haskell.org",
  "tags": [
    "here",
    "made a reply",
    "Bluefin streams finalize promptly"
  ],
  "textContent": "sjshuck:\n\n> The quick solution here is to sequester the file reading in its own `ResourceT`. See here.\n\nThanks for taking a look! That has the opposite problem for me: too early finalization. I have made a reply with an example.\n\nsjshuck:\n\n> It should say the finalization will be run as soon as the conduit is exited, either normally or via exception.\n\nUnfortunately I think not. In fact I don’t see any way to use `ResourceT` with `ConduitT` to achieve prompt finalization in the present of exceptions. That’s what I wrote about at Bluefin streams finalize promptly.",
  "title": "Conduit to yield first lines from file without leaking space or file handles?"
}