Feb 17, 2025 · Transforms the Option<T> into a Result<T, E>, mapping Some(v) to Ok(v) and None to Err(err). Arguments passed to ok_or are eagerly evaluated; if you are passing the result of a function call, it is recommended to use ok_or_else , which is lazily evaluated.

Sep 16, 2022 · Is there a difference between okay and OK? No. The meaning and usage are the same. The extremely versatile okay and OK can express agreement, change the topic, check for understanding, and verify that things are all right. Is OK just an truncated form of okay? Quite the opposite. It’s actually okay that derives from OK.

Okay, OK, and O.K. are all the same words and can be used interchangeably with one another in both informal and formal writing scenarios. In fact, OK is the original preferred spelling of the word, with other versions following. It can work as an adjective, noun, verb, or interjection.

Mar 28, 2024 · Both words mean the same thing: an agreement or acceptance. However, “ok” is often seen as more casual or informal. It’s a quick, easy way to say yes or show you understand. On the other hand, “okay” feels slightly more formal. You might choose “okay” in writing or in situations where you want to be clear and precise.

The simple answer to Tim’s question is that ‘ok’, while just about acceptable in text messages, isn’t really OK for more formal contexts. The generally accepted form is ‘OK’ – upper case, with no full stops. But, as there seems to be some appetite for a more complicated answer, here’s a little further information.

Nov 23, 2023 · 当函数的返回值类型为 Result，但是在函数体中需要处理 Option 时就应当使用这个方法。 配合 ? 宏，效果更好. // 如果 foo 有值，那么 int_result = Ok(123) // 如果 foo 没有值，那么 int_result = Err("error message") let int_result = foo.ok_or("error message"); // ok_or_else 使用闭包映射，结果上同. let int_result = foo.ok_or_else(|| "error message"); Result 枚举和 Option 的处理方法大同小异。

Dec 13, 2019 · “OK” and “okay” are both OK with us. Now, both spellings are accepted, so you can use either in your work. Some people also write it as “O.K.” or use the lowercase “ok,” which are widely accepted, too, though less common. However, whichever of the above spellings you choose, make sure to use one version consistently throughout each document.

Jun 6, 2023 · Many people feel that 'K' is a rude response. 'Ok' and 'Okay' are perceived as more neutral. 'Okk' has a sarcastic tone. 'O.K.' comes across as rude or gives the reader the impression you are irritated, angry, or annoyed. 'Ok' is a simple word, but it can be challenging to interpret, mainly when you use 'K' or 'Okk' or 'O.K.' as a response.

We use okay as a response token to show that we understand, accept, or agree with what someone is saying: I’ll see you at 5 in front of the library. OK. See you later. Why don’t you get …

Jun 3, 2011 · According to Gregg Reference Manual, okay is written without periods. “In sentences, the forms okay, okayed, and okaying look better than OK, OK’d, and OK’ing, but the latter forms may be used.” When used as a verb, spelling okay out is preferred. OK is the form supported by Merriam-Webster and the AP style guide.