add an Array() constructor example to the multi-dimensional-arrays theory - #353
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…eory (#313) The task is solved with Array<null>(size).fill(null).map(...), but the theory showed Array<Type> only as a way to write a type — creating an array of a given length was never covered, so the teacher's solution looked like it came out of nowhere. Added a section that separates Array<T> as an annotation from Array<T>(n) as a constructor call, shows why fill() is needed before map() (map skips empty slots), and ends with the two-dimensional case the task asks for. All three outputs were verified by compiling and running the snippets. Also stripped a pre-existing trailing space in the ru file (MD009). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Closes #313
Решение учителя в уроке «Многомерные массивы» построено на
Array<null>(size).fill(null).map(...), но в теорииArray<Type>показан только как способ записи типа. Создание массива нужной длины через конструктор нигде не разобрано, поэтому вывести решение из материала невозможно.Добавлен раздел «Создание массива нужной длины»:
Array<T>как аннотация противArray<T>(n)как вызова конструктора, «дырявый» массив и почемуmap()пропускает пустые слоты, необходимостьfill()передmap(), и в конце — двумерный случай, который и требуется в задании.Все три вывода в комментариях проверены компиляцией и запуском (
tsc+node):Array.from()и spread не упоминаются — вне скоупа issue. Задание и решение учителя не менялись. Заодно убран лишний пробел в конце строки в ru-файле (MD009).🤖 Generated with Claude Code