svanellewee

var util = require("util");

var Cons = function(a,b) {
    var cons = function(fn) { return fn(a,b); };
    return cons;
};

var Car = function(cons) {    
    var car = function(a,b) { return a; };
    return cons(car); 

svanellewee

var mc = require("mongodb").MongoClient
mc.connect("mongodb://localhost:27017/school", function(err, db) {
    if (err) {
	return console.error(err);
    }
    /*
    db.collection("students").find({}).toArray(function(err,  students) {
	if (err) {
	    return console.error(err);
	}

svanellewee

//node  --harmony b.js 
"use strict";
var b = [1,20,1000].map(e => e+100)
b.forEach(e => console.log(e));
if( true) {
    let b = "spartaaa"+12;
    console.log(b);
}
b.forEach(e => console.log(e));

svanellewee

function whatDoesItDo(val){

    return val ? 1 : 2;

}

svanellewee

bash-3.2$ echo '{ "name": "Foo", "phone": "555-1212", "email": "[email protected]", "id": 123 }' | node b.js
[{"name":"Foo","id":123}]:buffer

svanellewee

var Stream = require("stream");

var stream = new Stream();
stream.readable = true;
var i = 0;
var x = setInterval(function() {
    stream.emit("data", "."+i);
    i+= 1;
}, 0);

svanellewee

# Cons cells are functions! But they're also data structures!
def cons(head, tail) :
    def _(fn):
        return fn(head, tail)
    return _
# imperative version cns.head if cns was a struct/ tuple
def head(cns) :
    return cns(lambda head, tail : head)

def tail(cns):

svanellewee

data = '''a narrow fellow in the grass
occasionally rides;
you may have met him, did you not,
his notice sudden is.

the grass divides as with a comb,
a spotted shaft is seen;
and then it closes at your feet
and opens further on.

svanellewee

var mongodb = require("mongodb");
var MongoClient = mongodb.MongoClient;
var fs = require("fs");

var Transform = require("stream").Transform;

var name_surname_email_filter = new Transform({readableObjectMode:true, writableObjectMode:true} );
name_surname_email_filter._transform = function(data, enc, cb) {
    //console.log(data);
    var newdata = { first_name: data.first_name,

svanellewee

/*
 * 
 * Functor :
 *    fmap : (a -> b) -> fa -> fb
 * 
 */

function array_fmap1(fn, typeA) {
  var typeB = []
  typeA.forEach(function(aVal) {