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[guides] Added newer find_by syntax example in 4.2 release notes for Adequate Record [skip ci]

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Gordon Chan 2015-01-05 11:53:40 +13:00
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guides/source/4_2_release_notes.md
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@ -92,6 +92,9 @@ Post.find(2) # Subsequent calls reuse the cached prepared statement
Post.find_by_title('first post')
Post.find_by_title('second post')
Post.find_by(title: 'first post')
Post.find_by(title: 'second post')
post.comments
post.comments(true)
```