std::result

std::result standardizes the common “success or error” return shape as Result(T, E) so APIs across std:: compose cleanly.

Full reference: result.

Notes#

• Implemented (current representation is a tagged union enum).
• Full reference: result

Importing#

import std::result;

Examples#

Example: create and inspect a Result#

import std::result;

type R = std::result::Result(int, string);

fn main () -> int {
  let check: R = R.ok(123);
  match (check) {
    Err(_) => {
      return 1;
    },
  }

  let value: int = R.ok(123) ?? 0;
  if value != 123 { return 2; }
  return 0;
}

See also#

• Full reference: result
• Error model: errors, typed errors