JavaScript Rest Parameters
Rest parameters in JavaScript give you the ability to accept an array as a parameter in a function, but call it using an arbitrary number of arguments. This is kind of the reverse of the spread operator.
Left Join in Entity Framework
If you need a left join in Entity Framework, you have a couple options. First, if you’re using a real foreign key that just happens to be nullable, then you can use the regular navigation properties. But if you’re doing a left join manually, or with other factors, then you need to do things just a little differently: Suppose we have the following database: create table dbo . Foods ( FoodID int not null identity primary key , FoodName varchar ( 100 ) not null ) ; go insert dbo . Foods ( FoodName ) values ( 'Pizza' ) , ( 'Chicken' ) , ( 'Potatoes' ) , ( 'Broccoli' ) ; go create table dbo . People ( PersonID int not null identity primary key , FirstName varchar ( 100 ) not null , FavoriteFoodID int null , constraint FK_Person_FavoriteFoodID foreign key ( FavoriteFoodID ) references dbo . Foods ( FoodID ) ) ; go insert dbo . People ( FirstName , FavoriteFoodID ) values ( 'John' , 1 ) , ...
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