The name of the first Macro Virus, Cira 1996, IIRC. It was given the name 'Concept', because that's what is was, a test to see how much Word's scripting engine could do.

Concept was benign, it's only goal in life being to infect other Word(TM) documents with itself.

In C++, Concepts were first (?) introduced by STL. Unlike most of C++, they are not compiler enforced. Rather, they are documents that specify the structure needed by objects to work with templated algorithms/frameworks. Concepts may be fulfilled by Models, which are just types (including builtin types such as int). For example, the STL specifies the Concept of Sequence, which is a refinement (think subclass) of Container. Sequence may be modelled by vector, list, tree, etc. As long as a type fulfills certain requirements, such as having begin and end methods that behave in a certain way, it may be considered to Model a Concept. There is no explicit statement of relationship. Concepts are usually used within template frameworks, as a way of restricting what may be put as template parameters.

The crucial bit is that Concepts are NOT checked by the compiler. Indeed, the compiler has no clue about Concepts. They only exist in your head. There are concept checking frameworks however, which allow forcing the compiler to verify that requirements of Concepts are fulfilled; Boost includes one, which is used by GNU libstdc++.

In a way, Concepts are similar to interfaces in Java and C#, and indeed in certain cases the two can be used for the same effect (up to the difference of compile-time versus run-time binding and enforcement). Concepts are actually much closer to type classes in Haskell1, but whereas the Haskell compiler enforces type class restrictions, C++ relies on structural isomorphism. C# generics (in .NET 2.0) take after Haskell in this respect.

1 I didn't use this as the primary example because not as many programmers are versed in Haskell as Java and C#.

Concept is a board game designed by Gaëtan Beaujannot and Alain Rivollet. It is simple, fun, and somewhat overpriced.

The basic idea is the same as charades, but instead of acting out the clues, you picture them out. The board consists of dozens of pictures representing various concepts in vague terms. The person giving the clues places a marker to identify the central concept, subordinate concepts, and sub-sub-ordinate concepts. They may not say anything other than to let the guessers know when they are getting warmer.

For example, if the target word was Spider-Man, you might place the primary concept market on the 'fictional character' icon, the secondary on the 'animal' icon, and the tertiary on the 'man' icon, and the quaternary on the 'battle/conflict' icon. You might need to refine these further; you can connect sub-ordinate concepts to each of these with color-coordinated pieces. But with a couple of clever guessers asking questions like "is it a superhero?", you're probably going to zoom in on the right answer quickly.

And that's pretty much it. There are rules involving team play and scoring, but I haven't used them -- and the rules say up front that the developers often don't use them either. This is pretty much the same sort of fun as charades, 20 questions, and all the other party guessing games you already know, but with the twist that it is based on intersecting categories.

It is fun, and I recommend it. However, it also also very simple, and has a suggested manufacturer's retail price of $40.00... and at this moment, Amazon is trying to sell it for $50.00. This isn't a total rip-off; the game is easy to pick up and fun to play -- I'd say that it is more fun that Apples to Apples and Cards against Humanity, and easier to learn than Spyfall or The Resistance: Avalon, and that makes it a good game. It is also fairly well designed in gameplay and appearance, although I personally might have chosen some different default categories. Even so, I'd try to buy it on sale, if at all.

Con"cept (?), n. [L. conceptus (cf. neut. conceptum fetus), p. p. of concipere to conceive: cf. F. concept. See Conceit.]

An abstract general conception; a notion; a universal.

The words conception, concept, notion, should be limited to the thought of what can not be represented in the imagination; as, the thought suggested by a general term. Sir W. Hamilton.


© Webster 1913.

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