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array-prefer

v0.1.0

Published

return array sorted by boolean priority function.

Downloads

9

Readme

array-prefer

Build Status Coverage Status

Returns a copy of the input array, with preferred items moved to the front.

Installation

npm i array-prefer -S

Dependencies

None. Suitable for usage on nodejs or on the browser, via browserify/webpack.

Initialization

const arrayPrefer = require('array-prefer');

Usage

const outArray = arrayPrefer(inArray, hasPriority, limit);

inArray an input array of items (required)

hasPriority a function that returns truthy or falsey on items, indicating items that have priority (required)

limit an integer indicating the maximum number of items that may have priority (optional)

outArray a copy of inArray with items having priority moved to the front (lowest indexes). Except for moving some items to the front of the array, the order of items is otherwise preserved.

Examples


arrayPrefer([3,1,2], (x)=>(x<3)) // --> [1,2,3]

arrayPrefer([3,1,2], (x)=>(x<3), 0) // -->  [3,1,2]

arrayPrefer([3,1,2], (x)=>(x<3), 1) // --> [1,3,2]

arrayPrefer([3,1,2], (x)=>(x<3), 2) // --> [1,2,3]

Copyright

Copyright 2019 Paul Brewer, Economic and Financial Technology Consulting LLC

License

MIT