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<!--info-header-start--><h1>Last of Array </h1><blockquote><p>by Anthony Fu <a href="https://github.com/antfu" target="_blank">@antfu</a></p></blockquote><p><a href="https://tsch.js.org/15/play/ja" target="_blank"></a> &nbsp;&nbsp;&nbsp;<a href="./README.md" target="_blank"></a> <a href="./README.zh-CN.md" target="_blank"></a> <a href="./README.ko.md" target="_blank"></a> </p><!--info-header-end-->

この課題ではTypeScript 4.0が推奨されます

配列 T を受け取り、その最後の要素の型を返す汎用的な Last<T> を実装してください。

例えば

ts
type arr1 = ['a', 'b', 'c']
type arr2 = [3, 2, 1]

type tail1 = Last<arr1> // expected to be 'c'
type tail2 = Last<arr2> // expected to be 1
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<a href="../../README.ja.md" target="_blank"></a> <a href="https://tsch.js.org/15/answer/ja" target="_blank"></a> <a href="https://tsch.js.org/15/solutions" target="_blank"></a> <hr><h3>関連する課題</h3><a href="https://github.com/type-challenges/type-challenges/blob/main/questions/00014-easy-first/README.ja.md" target="_blank"></a> <a href="https://github.com/type-challenges/type-challenges/blob/main/questions/00016-medium-pop/README.ja.md" target="_blank"></a> <!--info-footer-end-->