Curry.js

Some utilities for working with D3.

Usage

This is developed as an AMD module for use with require. All the code is in lib/curry. You should move this whole directory to your application so that the functions are available as curry/fn_name.

Tests

Run the tests with make

D3

These functions help you to embrace d3's declaritive nature, for example:

// requires curry/property, curry/pipe and curry/index

var bars = svg.selectAll('rect')
  .data(data, property('key'))

bars.enter().append('rect')
  .attr('data-name', property('name'))
  .attr('data-value', property('value'))
  .attr('y', pipe(property('y'), yScale))
  .attr('height', pipe(property('height'), yScale))
  .attr('width', xScale.rangeBand())
  .attr('fill', pipe(index, colorScale))
  .on('mouseover', showTooltip)
  .on('mouseout', hideTooltip)
  .on('mousemove', pipe(mouseCoords, moveTooltip))

This code is making use of curry/property to return a property of its argument, curry/pipe to compose a single function made out of many smaller functions, and curry/index which returns the index of the data item.

You are encouraged to use curry/pipe to construct your own functions, e.g.

var height = pipe(property('height'), yScale),
    fill = pipe(index, colorScale),
    top = pipe(index, multiply(30), add('px'))

Available functions

curry/add
curry/and
curry/arg
curry/divide
curry/eql
curry/gt
curry/guard
curry/identity
curry/index
curry/invoke
curry/lt
curry/map
curry/multiply
curry/or
curry/pipe
curry/prepend
curry/property
curry/subtract
curry/threq