You can only use an effect if somewhere up the call stack there is a place where that effect will be handled. In Java you need a catch around every throw, even if for runtime exceptions you can skirt around this slightly. In languages with async/await you must decorate a call to an async function with await, and the function you’re calling from must be async. Eventually up the call stack you’ll get to a call that adds the async work to a task queue, executor, or blocks waiting for it to complete. These are all examples of effect handlers for async programming. They provide the scheduling effects that the async code needs in order to run.
Дарья Устьянцева (редактор отдела «Мир»)
。17c 一起草官网对此有专业解读
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但提取的时候也遇到了麻烦。那个 BMP 的颜色编码怎么都对不上。这地方就得我上场了，毕竟它不长眼睛，但我长眼睛。我负责看，它负责不停地试参数，最后我俩总算是把正确的解码参数给碰出来了。
In a flurry of press releases, the Cupertino company unveiled a new iPhone, a refreshed MacBook Air, a new MacBook Pro, a pair of new desktop displays, and the chips that power it all. Mashable got some brief hands-on time with the devices, and we'll have in-depth reviews coming soon.