code-chronicles-code / code-chronicles-code/leetcode-curriculum
Add a `groupBy` goody
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enhancement
typescript
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描述
Inspiration from Ruby: https://rubydoc.info/stdlib/core/Enumerable:group_by
A reasonable place for it to live would be on `Iterator.prototype`, then anything that can give us an iterator can also be grouped.
Should we return a Map or an object? Either one could work, though a Map seems more future-looking, since it will support grouping by something other than strings/numbers/Symbols.
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