deus

arguments convention over configuration

A little bit of functional programming to have a single function implementation whatever the arguments exists or their order.

Installation

with component:

$ component install bredele/deus

with nodejs:

$ npm install deus

Usage

It's a bit complicated to explain with words, so hopefully the example below speaks for itself.

create a function with deus:

// specify the arguments types (have to be different)
var init = deus('string', 'object', function(name, data) {
    console.log('name:', name);
    console.log('data:', data.github);
});

deus preserves the arguments:

init('olivier', { github : 'bredele'});
// => name: olivier
// => data: bredele

deus doesn't care if an argument is missing:

init({ github : 'bredele'});
// => name: undefined
// => data: bredele

deus allows you to switch the arguments order:

init({ github : 'bredele'}, 'olivier');
// => name: olivier
// => data: bredele

deus preseves the other arguments:

var other = deus('function', 'object', function(name, data, other) {
    console.log('other:', other);
});
other({
    github: 'bredele'
}, 'olivier');
// => olivier

Deus decreases the number of decisions the developer needs to make because the implementation is the same whatever the arguments are. The returned function is flexible and yet simple.