Code Duplication    Length = 4-4 lines in 2 locations

src/list.php 2 locations

@@ 176-179 (lines=4) @@
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 * @return array
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 */
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function init($list) {
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    if(is_string($list))
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        return (strlen($list) > 1)
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            ? substr($list, 0, strlen($list) - 1)
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            : '';
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    return (count($list) > 1)
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        ? array_slice($list, 0, count($list) - 1)
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        : [];
@@ 201-204 (lines=4) @@
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 * @return array
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 */
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function tail($list) {
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    if(is_string($list))
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        return (strlen($list) > 1)
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            ? substr($list, 1)
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            : '';
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    return (count($list) > 1)
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        ? array_slice($list, 1)
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        : [];