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Title: Update osa4.md by villeheilala · Pull Request #87 · fullstackopen/fullstackopen.github.io · GitHub

Open Graph Title: Update osa4.md by villeheilala · Pull Request #87 · fullstackopen/fullstackopen.github.io

X Title: Update osa4.md by villeheilala · Pull Request #87 · fullstackopen/fullstackopen.github.io

Description: .remove() deprecated -> .deleteMany

Open Graph Description: .remove() deprecated -> .deleteMany

X Description: .remove() deprecated -> .deleteMany

Opengraph URL: https://github.com/fullstackopen/fullstackopen.github.io/pull/87

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