TypeScript’s type narrowing will be our friend throughout this implementation. We need to determine which kind of frame we are working with at any point in time, which makes the tag fields on our types essential.
for each candidate in list of candidates。新收录的资料是该领域的重要参考
| FoldForestFrame，这一点在新收录的资料中也有详细论述
(AO) = Ampere AmpereOne。关于这个话题，新收录的资料提供了深入分析
Access elements by zero-based index with brackets. Out-of-bounds access is a runtime error: