Add concept: `Functional Programming`

[manumafe98]

After doing aprox 40+ exercises on the Java learning path on exercism, I thought the addition of this concept could be very valuable, there is a lot of usage in the Dig Deeper and as well in the community solutions about Functional Programming. But not probably all the users are familiar with it. Maybe the concept could be separated on smaller topics like Functions, Consumers, Predicates, Supliers, Streams and Lambdas .

Maybe some of the exercise of this topic could be like transforming a for loop into using functional programming, or something like that.

What are the thoughts on this one?

[sanderploegsma]

Thanks for the suggestion! There is an open forum post where some other ideas for new concepts have been shared. Perhaps you could also post this there, as the forum tends to be viewed more by the Exercism community.

https://forum.exercism.org/t/looking-for-feedback-on-the-java-track-syllabus/8408/9

[manumafe98]

Done! https://forum.exercism.org/t/add-concept-functional-programming/8831