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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
I have been unable to find any documentation on the .build method in Rails (i am currently using 2.0.2).
2 Answers
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What are the advantages of using a schema-free database like MongoDB compared to a relational databa
I'm used to using relational databases like MySQL or PostgreSQL, and combined with MVC frameworks such as Symfony, RoR or Django, and I think it works great.
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What's the difference between a single precision and double precision floating point operation?
What is the difference between a single precision floating point operation and double precision floating operation?
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Cast Object to Generic Type for returning
Is there a way to cast an object to return value of a method?
I tried this way but it gave a compile time exception in "instanceof" part:
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How do I select elements of an array given condition?
Suppose I have a numpy array x = [5, 2, 3, 1, 4, 5] , y = ['f', 'o', 'o', 'b', 'a', 'r'] . I want to select the elements in y corresponding to elements in x that are greater than 1 and less than 5.
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How to deploy a war file in Tomcat 7
I have copied the sample.war file into the webapps directory of Tomcat, and I can access localhost:8080 .
12 Answers
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list.clear() vs list = new ArrayList(); [duplicate]
Which one of the 2 options is better and faster to clear an ArrayList, and why?
8 Answers
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How to split a comma-separated string?
I have a String with an unknown length that looks something like this
14 Answers
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What is the difference between NaN and None?
I am reading two columns of a csv file using pandas readcsv() and then assigning the values to a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead ...
Calling the base constructor in C#
If I inherit from a base class and want to pass something from the constructor of the inherited class to the constructor of the base class, how do I do that?
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