Hadoop, Spark or even Clojure? Those may be out-dated. JSON-FP brings in a new programming paradigm that is fun and inspiring. If you need to query objects in distributed / heterogeneous data repositories, you might want to try out JSON-FP.

1. What Is JSON-FP
Ben Lue @ COIMOTION

2. What Is JSON-FP
Programs are expressed as
JSON objects in a functional
programming style.

3. Ok. That sounds like something
serious, but what does that
really mean?

4. Introducing JSON-FP
• JSON-FP uses JSON objects to
describe a computer program.
• If you send a JSON object to JSON-
FP to run, you could get a very
different object in return.

5. Let’s Start With Something Simple
var expr = {add: 1} ;
jsonfp.apply(1, expr);

6. var expr = {add: 1} ;
jsonfp.apply(1, expr);
That’s the same as saying 1 + 1
1  {add: 1} === (1 + 1)

7. Now you know a JSON-FP
expression is as simple as:
{op: option}
Ex: {add: 1}

8. JSON-FP allows you to replace
‘option’ with another JSON-FP
expression.
That makes things…
interesting.

9. Changing
{add: 1}
to
{add: {‘<‘: 10}}
The program changes to:
‘If the input is smaller than 10,
add 1 to it.’

10. Another Example
_.map(list, function(page) {
return _.pick(page, ‘title’);
});
The above code uses
underscore/lodash to remove all
but the ‘title’ property from a list
of pages.

11. If Done By JSON-FP…
_.map(list, function(page) {
return _.pick(page, ‘title’);
});
vs
{map: {pick: ‘title’}}

12. So you may notice the JSON-FP
expression can be very concise
and it can help developers to
focus on the problem they want
to solve.

13. But that’s not the whole point…

14. Properties/features of JSON-FP:
• Map/Reduce in the
distributed environments.
• Functional programming
• Homoiconic /
metaprogramming

15. Map/reduce, functional
programming and homoiconic…
Those are too heavy stuff for
this introduction. We’ll cover
them in the coming slides.
But we can talk a little about
map/reduce…

16. If your application has to query
data repositories in a
heterogeneous environment,
hadoop/spark is NOT a good fit.
Try JSON-FP, life will be much
easier.

17. Any real world applications?

18. Well, JSON-FP is less than a month
old. Interesting applications are
coming…
For now, you can check out newsql
(https://github.com/benlue/newsql)
which uses JSON-FP to query
objects.
Our next generation API services
uses JSON-FP, too.

19. That’s it for now.
For more JSON-FP examples, check
out:
https://github.com/benlue/jsonfp-examples
The JSON-FP is open sourced at
github:
https://github.com/benlue/jsonfp