monoid-map

Monoid Map
==========


Fantasy Land Complaint!
Indigenous Complaint!

An implementation of a map as a monoid that expects all of it's elements
to also be monoids.

Examples
========
Simple Example w/ inner lists:
``javascript
var Map = require("monoid-map");

var first = new Map({
items: ["potion", "dagger"],
spells: ["smite", "ignite"]
});

var second = new Map({
items: ["mallet", "boots"],
spells: ["exhaust", "teleport"]
});

var merged = first.concat(second);
console.log(merged.toObj());
/*
Prints:
{
items: ["potion", "dagger", "mallet", "boots"],
spells: ["smite", "ignite", "exhaust", "teleport"]
}
*/
`

More complex monoid example:
`javascript
var Map = require("monoid-map");
var Max = require("monoid-max");
var Min = require("monoid-min");
var Average = require("monoid-average");
var StdDeviation = require("monoid-std-deviation");

var ages = [22, 23, 21, 25, 27, 30, 25]

var result = ages.map(function(n) {
return new Map({
max: new Max(n),
min: new Min(n),
average: new Average(n),
stddev: new StandardDeviation(n)
});
}).reduce(function(m, n) {
return m.concat(n);
}).toNative();

console.log(result);
/*
Prints:
{
max: 30,
min: 21,
average: 24.714285714286,
stddev: 2.86428
}
*/
``