query: Difference between has_one and belongs_to in Rails?
positive_passages.docid: 148325
positive_passages.text: What's the difference between belongs_to and has_one?
negative_passages.docid: 31441
negative_passages.text: Which vs Which one
negative_passages.docid: 46477
negative_passages.text: How to understand nil vs. empty vs. blank in Ruby
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negative_passages.text: Is there documentation for the Rails column types?
negative_passages.docid: 95919
negative_passages.text: Rails has_many :through Find by Extra Attributes in Join Model
negative_passages.docid: 59315
negative_passages.text: To use self. or not.. in Rails
negative_passages.docid: 121488
negative_passages.text: Why do we use "have" with does and not "has"?
negative_passages.docid: 30170
negative_passages.text: Difference between _ and self. in Objective-C
negative_passages.docid: 63056
negative_passages.text: Subquery using Exists 1 or Exists *
negative_passages.docid: 107982
negative_passages.text: Difference between -%> and %> in rails
negative_passages.docid: 125890
negative_passages.text: Difference between "does have" and "has"
negative_passages.docid: 13934
negative_passages.text: Is there any difference between the `:key => "value"` and `key: "value"` hash notations?
negative_passages.docid: 21294
negative_passages.text: what's different between each and collect method in Ruby
negative_passages.docid: 44160
negative_passages.text: Set theory: difference between belong/contained and includes/subset?
negative_passages.docid: 10138
negative_passages.text: How to avoid NoMethodError for missing elements in nested hashes, without repeated nil checks?
negative_passages.docid: 103174
negative_passages.text: how does activerecord know to perform an insert or update?
negative_passages.docid: 126492
negative_passages.text: jQuery: subtle difference between .has() and :has()