Teach me how to use lambda. Please

As in Amazon? Or expressions? Or functions? May need more context here.

Tons of lambdas man. I know my C# lambdas pretty well, but I'm not sure which you are talking about

In what language? Java? Python? Something else?

C# bros

The Microsoft docs on it are great, but the basics are this:
They are short, useful little functions. A function like
Public int SquareThing(int x)
{
return x * x;
}

Is equivalent to
x => x * x

That's a shitty example beverage they are so much more powerful, but it's early this morning. Here's the docs:
https://docs.microsoft.com/en-us/...