light-array

Fast, low-garbage functions for operating on arrays.

Basic usage

$ npm install light-array

var lightArray = require('light-array');

var animals = ['dog', 'banana', 'salamander',
  'mouse', 'giraffe', 'orange'];

lightArray.filterInPlace(animals, function (item) {
  return item !== 'banana' && item !== 'orange';
});

console.log(animals); // ['dog', 'salamander', 'mouse', 'giraffe']

Methods

These methods directly modify the array you pass in. No new arrays are created. The methods all return undefined.

filterInPlace(array, callback)

• Like the native .filter(), but it filters the array in place without creating a new one.
• The order original of the items is maintained.

removeItemByIndex(array, index)

• Deletes the item at the specified index.
• Uses a fast approach that does not preserve the array's original order. If you care about keeping the array in order, use .splice().

dedupe(array)

• Removes any repeated items (using === for comparison) from the array.
• Original order is maintained, just with duplicates removed.
• If an element is duplicated, the last instance of it is kept, and all others deleted.

dedupeSorted(array)

• Faster alternative to lightArray.dedupe(), for use only when you know the array is already sorted.
• Sorted means that array[n] <= array[n + 1] is always true. If this isn't the case, the results will be unpredictable.
• Original order is maintained (just with duplicates removed).

To do

• more tests
• write benchmarks, test speed and usage against native equivalents and lodash.

License

© 2014 Callum Locke Licensed under the MIT license.