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Sie sehen hier eine soeben freigeschaltete Homepagewww.max-hollmann.de

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User Max Hollmann - Stack Overflowstackoverflow.com › users

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Max Hollmann's user avatar. Max Hollmann. Member for 10 years, 5 months. Last seen more than 1 year ago. GitHub. Hamburg, Germany. Profiles. Meta user · Network ...

Ruby on Rails - Get max and sum group by multiple keys in array at...

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Max Hollmann Feb 12 '15 at 4:03. | show 2 more comments. up vote 1 down vote. As you requested in the comments, here's my comment extended into an easier format. My edit to Max's post was rejected. a.group_by { |h| h.values_at("a", "b") }. map { |_, v| v.max_by { |h| h["c"] }. tap { |h| h["d"] = v.inject(0) ...

How to retrive and show the records of given date range in rails ...stackoverflow.com › questions › how-to-retrive-and...

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Copy link. CC BY-SA 3.0 · Improve this answer. Follow. answered Feb 12 '15 at 5:08. Max Hollmann Max Hollmann 345○22 silver badges○88 bronze badges.

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Private Homepages Max Hollmann

Sie sehen hier eine soeben freigeschaltete Homepagewww.max-hollmann.de

User Max Hollmann - Stack Overflowstackoverflow.com › users

Ruby on Rails - Get max and sum group by multiple keys in array at...

How to retrive and show the records of given date range in rails ...stackoverflow.com › questions › how-to-retrive-and...