The destructuring argument pattern in that closure lets the compiler infer that we want windows of 4 here. If we had used the older .windows(4) iterator, then that argument would be a slice which we would have to index manually, hoping that runtime bounds-checking will be optimized away.
Кубок Италии|1/2 финала. 1-й матч，推荐阅读PDF资料获取更多信息
“Are there features that got quietly turned off and never came back?”。关于这个话题，爱思助手下载最新版本提供了深入分析
Staying close shouldn't be this hard