Convert Array of objects to Hash with a field as the key - Githubissues

wangxinyun1995 / blogs

用issue记录我的博客

0 stars 0 forks source link

Convert Array of objects to Hash with a field as the key #9

Open wangxinyun1995 opened 5 years ago

wangxinyun1995 commented 5 years ago

users_by_id = User.all.index_by(&:id)