What is a Lambda?

Question

Could someone provide a good description of what a Lambda is? We have a tag for them and they\'re on the secrets of C# question, but I have yet to find a good definition an

Answer 1

There's not really such a thing as 'a lambda' in programming. It depends on the language, etc.

In short, normally a language that 'has lambdas' uses the term for anonymous functions or, in some cases, closures. Like so, in Ruby:

f = lambda { return "this is a function with no name" }
puts f.call