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c++ - Should I use nested classes in this case?

c++ - Should I use nested classes in this case?

I am working on a collection of classes used for video playback and recording. I have one main class which acts like the public interface, with methods like play(), stop(), pause(), record() etc... Th…


c# - How do I most elegantly express left join with aggregate SQL as LINQ query

SQL: SELECT u.id, u.name, isnull(MAX(h.dateCol), '1900-01-01') dateColWithDefault FROM universe u LEFT JOIN history h ON u.id=h.id AND h.dateCol<GETDATE()-1 GROUP BY u.Id, u.name…


Can you explain closures(as they relate to Python)?

I've been reading a lot about closures and I think I understand them, but without clouding the picture for myself and others, I am hoping someone can explain closures as succinctly and clearly as poss…


sql - Use a LIKE clause in part of an INNER JOIN

Can/Should I use a LIKE criteria as part of an INNER JOIN when building a stored procedure/query? I'm not sure I'm asking the right thing, so let me explain. I'm creating a procedure that is going to…


How do you get a reference to the enclosing class from an anonymous inner class in Java?

This question already has an answer here: Getting hold of the outer class object from the inner class object 9 answers I'm currently creating an explicit…


c# - Creating a LINQ select from multiple tables

This query works great: var pageObject=(from op in db.ObjectPermissions join pg in db.Pages on op.ObjectPermissionName equals page.PageName where pg.PageID== pag…


c# - What is the syntax for an inner join in LINQ to SQL?

I'm writing a LINQ to SQL statement, and I'm after the standard syntax for a normal inner join with an ON clause in C#. How do you represent the following in LINQ to SQL: select DealerContact.* from D…


sql - What is the difference between “INNER JOIN” and “OUTER JOIN”?

Also how do LEFT JOIN, RIGHT JOIN and FULL JOIN fit in?…


Explicit vs implicit SQL joins

Is there any efficiency difference in an explicit vs implicit inner join? For example: SELECT*FROM table a INNER JOIN table b ON a.id=b.id; vs. SELECT a.*, b.* FROM table a, table b WHERE a.id=…


SQL Query to get latest price

I have a table containing prices for a lot of different "things" in a MS SQL 2005 table. There are hundreds of records per thing per day and the different things gets price updates at different times…





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