lookup-tables

I am working on a custom data structure and I am currently in the beta testing process: The data will be stored within an array and this array can be represented as a 4D, 2D & 1D array. These three arrays are declared within a union since it represents the same memory addressing. Here is the declaration to my class: SomeClass.h #ifndef SomeClass_H #define SomeClass_H class SomeClass { public: static const unsigned V1D_SIZE; // Single Or Linear Array Representation : Size 256 - 256 Elements static const unsigned V2D_SIZE; // 2D Array [16][16] : Size 16 - 256 Elements static const unsigned V4D

I was having some trouble lately trying to replace specific values in a data frame or matrix by using a lookup-table. So this represents the original.data to be modified ... V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 1 255 255 255 255 255 255 255 255 255 255 255 255 255 255 2 255 255 255 255 255 255 255 255 3 3 255 255 255 255 3 255 255 255 255 255 1 3 3 3 3 3 255 255 255 4 255 255 5 5 5 1 3 3 4 4 3 255 255 255 5 255 5 5 5 5 1 3 4 4 4 4 255 255 255 6 255 5 5 5 1 3 3 3 4 4 3 3 255 255 7 255 255 5 1 3 3 3 3 6 6 6 3 255 255 8 255 255 1 1 1 1 2 2 3 3 6 3 255 255 9 255 255 1 1 1 2 2 2 2 2 3 3 3

Consider a lookup function with the following signature, which needs to return an integer for a given string key: int GetValue(string key) { ... } Consider furthermore that the key-value mappings, numbering N, are known in advance when the source code for function is being written, e.g.: // N=3 { "foo", 1 }, { "bar", 42 }, { "bazz", 314159 } So a valid (but not perfect!) implementation for the function for the input above would be: int GetValue(string key) { switch (key) { case "foo": return 1; case "bar": return 42; case "bazz": return 314159; } // Doesn't matter what we do here, control will

Let's say I have a type of lookup table which I can build for a given integer: class FooLookupTable { ... public: FooLookupTable(int radix) { ... } }; Then there's a class whose template parameter is that same integer, and whose constructor initializes a member instance of this lookup table: template <int radix> class Foo { ... private: FooLookupTable table; public: Foo () : FooLookupTable (radix) { ... } }; Throughout my code I instantiate these with various values of radix: int main() { ... Foo<1> myFoo; Foo<1> yourFoo; Foo<10> theirFoo; ... } This works and doesn't create any hairy

I'm developing a Microsoft Access 2013 based information system. One of the client's demands was to simplify the data entry process by using combo box with available values. For example, instead of entering agentID the client asked to let the user choose agent name from the combo box, the same logic with other similar fields. In brief: I need to avoid as much as possible the need to enter the values ID and let to user choose them from the combo box. Microsoft Access has a built-in lookup wizard that allows to user to bind the table field with specific field from another table, e.g. to link

As part of my domain model, lets say I have a WorkItem object. The WorkItem object has several relationships to lookup values such as: WorkItemType : UserStory Bug Enhancement Priority : High Medium Low And there could possibly be more, such as Status , Severity , etc... DDD states that if something exists within an aggregate root that you shouldn't attempt to access it outside of the aggregate root. So if I want to be able to add new WorkItemTypes like Task, or new Priorities like Critical, do those lookup values need to be aggregate roots with their own repositories? This seems a little