tarsana /
functional
| @@ 146-156 (lines=11) @@ | ||
| 143 | * @param array|string $list |
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| 144 | * @return mixed |
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| 145 | */ |
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| 146 | function head() { |
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| 147 | static $head = false; |
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| 148 | $head = $head ?: curry(function($list) { |
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| 149 | if(is_string($list)) |
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| 150 | return substr($list, 0, 1); |
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| 151 | return (count($list) > 0) |
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| 152 | ? $list[0] |
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| 153 | : null; |
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| 154 | }); |
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| 155 | return _apply($head, func_get_args()); |
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| 156 | } |
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| 157 | ||
| 158 | /** |
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| 159 | * Returns the last item of the given array or string. |
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| @@ 174-184 (lines=11) @@ | ||
| 171 | * @param array|string $list |
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| 172 | * @return mixed |
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| 173 | */ |
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| 174 | function last () { |
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| 175 | static $last = false; |
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| 176 | $last = $last ?: curry(function($list) { |
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| 177 | if(is_string($list)) |
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| 178 | return substr($list, -1); |
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| 179 | return (count($list) > 0) |
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| 180 | ? $list[count($list) - 1] |
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| 181 | : null; |
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| 182 | }); |
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| 183 | return _apply($last, func_get_args()); |
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| 184 | } |
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| 185 | ||
| 186 | /** |
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| 187 | * Returns all but the last element of the given array or string. |
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