1 | <?php |
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13 | abstract class Distance implements DistanceInterface |
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14 | { |
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15 | /** |
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16 | * @var float|int |
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17 | */ |
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18 | public $norm; |
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19 | |||
20 | /** |
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21 | * Distance constructor. |
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22 | */ |
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23 | public function __construct(float $norm = 3.0) |
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27 | |||
28 | /** |
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29 | * @throws InvalidArgumentException |
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30 | */ |
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31 | public function distance(array $a, array $b): float |
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41 | |||
42 | /** |
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43 | * @throws InvalidArgumentException |
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44 | */ |
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45 | protected function deltas(array $a, array $b): array |
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61 | } |
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62 |