rails g model Article name:string rails g model Category name:string rails g model Tag name:string taggable_id:integer taggable_type:string category_id:integer
I have a map of Sho开发者_如何转开发pables which has things in it that were initialised like this:
I was trying to implement the state monad in OCaml (as an exercise). My implementation looks like this:
I have a data type which carries a \'hidden\' (inferred) type and a concrete value. Now I try to implement a function which changes both of these but am unable to make it pass GHC.
I don\'t know how to resolve a problem with templates and inheritance. In my code there is a templated class which looks more or less like:
I need some help with a design issue I\'m having. What I try to achieve is this: I have a main class called Document. This Class has a list of Attribute classes. These Attribute classes have some com
my problem is following. How can I joins belongs_to association from polymorphic model There is situation
Following this question, I\'m wondering why a struct\\class in C++ has to have a virtual method in order to be polymorphic.
I think I understand the concept开发者_如何学Python of virtual methods and vtables, but I don\'t understand why there is a difference between passing the object as a pointer(or reference) and passing
I have a 开发者_JAVA百科base class that I made a template because I want to vary the type it takes for several functions, but I want to derive from these templated base classes.I want to store a vecto
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