any luck with that? I was reading this and think that’s what you’re looking for. I have exactly zero xp with MEF, but it looks promising. I hope I can scrape some hours of free time together at home to experiment with that. It would be ultra usefull to create some kind of modularized MVC … Read more
IS NULL and IS NOT NULL work for complex types too, so these two should be appropriate: select * from bla where recipient is not null select * from bla where recipient is null
How to make a composite manifest for Microsoft smooth streaming
Composition This is a design concept (not really a pattern). This term is used when you want to describe one object containing another one. It occurs very often in Composition over inheritance discussion. Moreover, composition implies strong ownership. One objects owns (i.e. manages the lifecycle) of another object. When parent is destroyed, all children are … Read more
You can use AND in the expression for the ON criteria and demand the fields are all equal there. SELECT * FROM Table1 INNER JOIN Table2 ON Table1.Key1 = Table2.Key1 AND Table1.Key2 = Table2.Key2 AND Table1.Key3 = Table2.Key3
The problem is that you have defined each of the dependent columns as foreign keys separately, when that’s not really what you intend, you of course want a composite foreign key. Sqlalchemy is responding to this by saying (in a not very clear way), that it cannot guess which foreign key to use (firstName or … Read more
They usually go hand in and hand. In that using the composite pattern often leads to also using the decorator pattern. The composite pattern allows you to build a hierarchical structure (such as a tree of elements) in a way that allows your external code to view the entire structure as a single entity. So … Read more
A Composite is a pattern that is useful anytime you may need to selectively treat a group of objects that are part of a hierarchy as “the same” when they are in fact different. Typically the examples used talk in terms of treating leaves and nodes the same, but the pattern can also be extended … Read more
Composite indexes work just like regular indexes, except they have multi-values keys. If you define an index on the fields (a,b,c) , the records are sorted first on a, then b, then c. Example: | A | B | C | ————- | 1 | 2 | 3 | | 1 | 4 | 2 … Read more
Given that canvas is a canvas element or an OffscreenCanvas object, const context = canvas.getContext(‘2d’); context.clearRect(0, 0, canvas.width, canvas.height);