The 'cool but funky' thing is LINQ. Language Integrated Query. It can be used to query in-memory lists and arrays as well as build SQL to query a DB, or even query XML files.
It is C#'s support for monads.
In terms of var. It's best not to think of it as dynamic like javascript. You can't do this for example:
var a = 123;
a = "Hello";
The second line will throw an exception because 'a' is not a string, it's an int. So it's not dynamic like JS. It simply infers the type when it can so that you don't have to type it, otherwise its exactly the same.
Interestingly C# does have a dynamic aspect too, and that's with the 'dynamic' keyword.
dynamic x = 123;
x = "Hello";
That will work where the var example wouldn't. It's a rarely used feature, but comes in useful to avoid boilerplate when dealing with external 'stuff', like XML files, JSON, or REST responses.
Comments
The 'cool but funky' thing is LINQ. Language Integrated Query. It can be used to query in-memory lists and arrays as well as build SQL to query a DB, or even query XML files.
It is C#'s support for monads.
In terms of var. It's best not to think of it as dynamic like javascript. You can't do this for example:
The second line will throw an exception because 'a' is not a string, it's an int. So it's not dynamic like JS. It simply infers the type when it can so that you don't have to type it, otherwise its exactly the same.Interestingly C# does have a dynamic aspect too, and that's with the 'dynamic' keyword.
That will work where the var example wouldn't. It's a rarely used feature, but comes in useful to avoid boilerplate when dealing with external 'stuff', like XML files, JSON, or REST responses.