I have array:

[ [ '245', '0', '0.0100', '245,0,0.01' ],
  [ '245', '1', '0.0100', '245,1,0.01' ],
  [ '208', '0', '0.0300', '208,0,0.03' ],
  [ '208', '0', '0.0500', '208,0,0.05' ],
  [ '208', '0', '0.0600', '208,0,0.06' ] ]

and i need to get unique arrays by [0] and [1] cells like this:

[ [ '245', '0', '0.0100', '245,0,0.01' ],
  [ '245', '1', '0.0100', '245,1,0.01' ],
  [ '208', '0', '0.0600', '208,0,0.06' ] ]

Help please/

I have array:

[ [ '245', '0', '0.0100', '245,0,0.01' ],
  [ '245', '1', '0.0100', '245,1,0.01' ],
  [ '208', '0', '0.0300', '208,0,0.03' ],
  [ '208', '0', '0.0500', '208,0,0.05' ],
  [ '208', '0', '0.0600', '208,0,0.06' ] ]

and i need to get unique arrays by [0] and [1] cells like this:

[ [ '245', '0', '0.0100', '245,0,0.01' ],
  [ '245', '1', '0.0100', '245,1,0.01' ],
  [ '208', '0', '0.0600', '208,0,0.06' ] ]

Help please/

• javascript
• underscore.js
• lodash

Share Improve this question Follow edited May 23, 2016 at 14:52 Pranav C Balan 115k2525 gold badges171171 silver badges195195 bronze badges asked May 23, 2016 at 14:43 axonaxon 10922 silver badges1111 bronze badges

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1 Answer 1

Sorted by: Reset to default 8

Use lodhash uniqBy() method

var data = [
  ['245', '0', '0.0100', '245,0,0.01'],
  ['245', '1', '0.0100', '245,1,0.01'],
  ['208', '0', '0.0300', '208,0,0.03'],
  ['208', '0', '0.0500', '208,0,0.05'],
  ['208', '0', '0.0600', '208,0,0.06']
];

console.log(
  _.uniqBy(data, function(v) {
    return v[0] + ' ' + v[1];
  })
)

<script src="https://cdnjs.cloudflare./ajax/libs/lodash.js/4.13.0/lodash.js"></script>