{
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  "path": "/t/add-new-reserved-lifetime-owned/24129#post_3",
  "publishedAt": "2026-04-04T08:54:45.000Z",
  "site": "https://internals.rust-lang.org",
  "textContent": "True, but Cow is runtime solution. Each time you want to touch field in structure that is Cow you have to check whatever it is borrowed or owned. In my case I want to have functions that are generated once for specific case: one for some reference type like string slice and then another one for owned String. This way we don`t have branching or some vtable dispatch on each value access.",
  "title": "Add new reserved lifetime: 'owned"
}