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<?php namespace igorw; class Past { private $value; private $pastValues; function __construct($value, array $pastValues = []) { $this->value = $value; $this->pastValues = $pastValues; } function map(callable $fn) { return $this->update($fn($this->value)); } function update($value) { return new Past($value, array_merge($this->pastValues, [$this->value])); } function get() { return array_rand($this->pastValues); } } $answer = new Past(42); $answer = $answer->map(function ($number) { return $number + 1; }); $answer = $answer->update(-3); $answer = $answer->map(function ($number) { return $number * -1; }); $answer = $answer->map(function ($number) { return $number * 3; }); $answer = $answer->update('completely new value, hehehe'); var_dump($answer->get());
Output for 5.4.0 - 5.4.1, 5.4.6, 5.4.8 - 5.4.9, 5.4.12, 5.4.26, 5.4.28, 5.4.38, 5.4.41, 5.4.44, 5.5.2 - 5.5.5, 5.5.20, 5.5.29 - 5.5.31, 5.5.35, 5.6.11, 5.6.16, 5.6.18 - 5.6.19, 5.6.22, 7.0.3, 7.0.7, 7.0.20, 7.1.7, 7.1.32 - 7.1.33, 7.2.0, 7.2.19, 7.2.21, 7.3.1, 7.3.9, 7.3.12 - 7.3.16, 7.3.26 - 7.3.27, 7.4.3, 7.4.6 - 7.4.7, 7.4.11, 7.4.20, 7.4.24, 8.0.2, 8.0.7 - 8.0.8, 8.0.10 - 8.0.11
int(3)
Output for 5.4.11, 5.4.14 - 5.4.15, 5.4.17 - 5.4.21, 5.4.23, 5.4.25, 5.4.27, 5.4.29, 5.4.31, 5.4.39, 5.5.7, 5.5.9, 5.5.12, 5.5.19, 5.5.25, 5.5.28, 5.5.32, 5.5.34, 5.5.36, 5.6.0 - 5.6.1, 5.6.21, 7.0.1 - 7.0.2, 7.0.6, 7.0.14, 7.1.0, 7.1.20, 7.1.27, 7.1.30, 7.2.23, 7.2.31, 7.3.6, 7.3.17, 7.3.21, 7.3.25, 7.3.30, 7.4.0, 7.4.14 - 7.4.15, 7.4.22, 8.0.5, 8.0.9
int(4)
Output for 5.4.3, 5.4.7, 5.4.22, 5.4.24, 5.4.30, 5.4.40, 5.4.42, 5.4.45, 5.5.0, 5.5.8, 5.5.13, 5.5.15, 5.6.3, 5.6.6 - 5.6.8, 5.6.10, 7.2.20, 7.2.22, 7.3.2, 7.3.4 - 7.3.5, 7.3.7, 7.3.10, 7.3.19 - 7.3.20, 7.4.4, 7.4.8, 7.4.10, 7.4.16, 7.4.21, 8.0.1, 8.0.6
int(2)
Output for 5.4.2, 5.4.5, 5.4.10, 5.4.32, 5.5.6, 5.5.10, 5.5.14, 5.5.16 - 5.5.18, 5.5.23, 5.5.27, 5.6.4 - 5.6.5, 5.6.9, 5.6.14 - 5.6.15, 5.6.17, 5.6.28, 7.0.5, 7.1.10, 7.1.31, 7.2.6 - 7.2.17, 7.2.25, 7.2.30, 7.2.32, 7.3.0, 7.3.3, 7.3.8, 7.3.28, 8.0.0, 8.0.3
int(1)
Output for 5.4.4, 5.4.13, 5.4.16, 5.4.34 - 5.4.37, 5.4.43, 5.5.1, 5.5.11, 5.5.21 - 5.5.22, 5.5.24, 5.5.26, 5.5.33, 5.6.2, 5.6.12 - 5.6.13, 5.6.20, 7.0.0, 7.0.4, 7.1.5 - 7.1.6, 7.1.26, 7.1.28 - 7.1.29, 7.2.18, 7.2.24, 7.2.29, 7.2.33, 7.3.11, 7.3.18, 7.3.23 - 7.3.24, 7.3.29, 7.4.5, 7.4.9, 7.4.12 - 7.4.13, 7.4.23
int(0)
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/hGDts on line 9
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_STRING in /in/hGDts on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/hGDts on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/hGDts on line 3
Process exited with code 255.

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186.86 ms | 401 KiB | 291 Q