| @@ 1850-1866 (lines=17) @@ | ||
| 1847 | * @return static |
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| 1848 | * <p>(Immutable)</p> |
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| 1849 | */ |
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| 1850 | public function firstsImmutable(int $number = null): self |
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| 1851 | { |
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| 1852 | $arrayTmp = $this->getArray(); |
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| 1853 | ||
| 1854 | if ($number === null) { |
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| 1855 | $array = (array) \array_shift($arrayTmp); |
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| 1856 | } else { |
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| 1857 | $number = (int) $number; |
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| 1858 | $array = \array_splice($arrayTmp, 0, $number); |
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| 1859 | } |
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| 1860 | ||
| 1861 | return static::create( |
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| 1862 | $array, |
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| 1863 | $this->iteratorClass, |
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| 1864 | false |
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| 1865 | ); |
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| 1866 | } |
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| 1867 | ||
| 1868 | /** |
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| 1869 | * Get the first value(s) from the current array. |
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| @@ 1877-1893 (lines=17) @@ | ||
| 1874 | * @return static |
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| 1875 | * <p>(Immutable)</p> |
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| 1876 | */ |
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| 1877 | public function firstsKeys(int $number = null): self |
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| 1878 | { |
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| 1879 | $arrayTmp = $this->keys()->getArray(); |
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| 1880 | ||
| 1881 | if ($number === null) { |
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| 1882 | $array = (array) \array_shift($arrayTmp); |
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| 1883 | } else { |
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| 1884 | $number = (int) $number; |
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| 1885 | $array = \array_splice($arrayTmp, 0, $number); |
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| 1886 | } |
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| 1887 | ||
| 1888 | return static::create( |
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| 1889 | $array, |
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| 1890 | $this->iteratorClass, |
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| 1891 | false |
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| 1892 | ); |
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| 1893 | } |
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| 1894 | ||
| 1895 | /** |
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| 1896 | * Get and rmove the first value(s) from the current array. |
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