JavaScript Promises: There and back again

Re:JavaScript Promises: There and back again by sciolistse on Tuesday December 17, 2013 @01:18PM (#6922717)

In generator code you'd use try/catch to handle failure instead.

    try {
      var user = yield Users.get(1234);
      return user.name;
    } catch(ex) {
      // do whatever
    }

rather than..

    return Users.get(1234).then(
      function (u) { return u.name; },
      function (ex) { /* do whatever */ }
    );

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Re:JavaScript Promises: There and back again by spion on Tuesday December 17, 2013 @07:20PM (#6924964)

Those are not entirely equivalent. For example, if you make a typo when writing "user" or "u", the first one will catch that typo (cannot get property name of undefined) while the second one will not.

  Users.get(1234)
    .then(u => u.name)
    .catch(ex => 1/* do whatever */);

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