Distinctive traits of the functional languages

Question

It is known that all functional languages share some basic properties like using functions as basic building block for programs with all the consequences like using recursion in

Answer 1

Functional Programming is a style, not a language construct

Most functional languages have some common principles:

• Immutable objects
• Closures and anonymous functions
• Generic algorithms
• Continuations

But the most important principle is that they usually force you to write in a functional style. You can program in a functional style in most any language. C# could be considered "functional" if you write code like that, as could any other language.