@@ -12,7 +12,7 @@ |
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12 | 12 | * |
13 | 13 | * @return mixed[]|string |
14 | 14 | */ |
15 | - public static function hstack(mixed ...$inputData): array|string |
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15 | + public static function hstack(mixed ...$inputData): array | string |
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16 | 16 | { |
17 | 17 | $maxRow = 0; |
18 | 18 | foreach ($inputData as $matrix) { |
@@ -11,7 +11,7 @@ |
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11 | 11 | * |
12 | 12 | * @return mixed[] |
13 | 13 | */ |
14 | - public static function vstack(mixed ...$inputData): array|string |
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14 | + public static function vstack(mixed ...$inputData): array | string |
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15 | 15 | { |
16 | 16 | $returnMatrix = []; |
17 | 17 |