What is use of Functional Languages..??

Question

Is functional languages are useful..?? What is their uses and what can i create from functional languages ..??

Answer 1

... Functional programming languages are used to write programs in terms of functions.
While OOP depicts a system as a collection of classes, objects, and the interaction and relationship between them, function programming depicts a system as a collection of functions, each providing an output which corresponds to a certain input.
Most languages we've been exposed to are multi-paradigm, allowing you to use functional, procedural, object-oriented styles as you see fit. If you wish to look deeper, there are also "pure functional programming languages" which only allow you to program using functions.
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Answer 2

I have often wondered if every problem requiring a computer based solution can be solved via a pure functional language. Perhaps some problems lend themselves more to be solved via an OO approach than a functional one. This is my gut feeling but I don't have enough knowledge or imagination to provide a concrete example.

Answer 3

Functional languages mainly used because of their -
1. Reusablity
2. Less code required
3. Increases Readability
4. Useful in Big Projects
5. Oops Concept
6. Time saving concept
7. We can create Custom functions.
That's why we should use functional language.