Range
Computes the arithmetic range of an array.
Installation
$ npm install compute-range
For use in the browser, use browserify.
Usage
var range = ;
range( arr[, accessor] )
Computes the arithmetic range of an array
. For primitive number arrays
,
var arr = 2 3 4 1 ;var r = ;// returns [ 1, 4 ]
For object arrays
, provide an accessor function
for accessing numeric array
values
var arr =12334461;{return d 1 ;}var r = ;// returns [ 1, 4 ]
Notes
- if provided an empty
array
, the function returnsnull
. - the first value of the returned
array
is always the minimum value and the second value is always the maximum value.
Examples
var range = ;var data = 100 ;for var i = 0; i < datalength; i++data i = Math * 100;console;
To run the example code from the top-level application directory,
$ node ./examples/index.js
Tests
Unit
Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:
$ make test
All new feature development should have corresponding unit tests to validate correct functionality.
Test Coverage
This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:
$ make test-cov
Istanbul creates a ./reports/coverage
directory. To access an HTML version of the report,
$ make view-cov
License
Copyright
Copyright © 2014-2015. Athan Reines.