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CollectFrequencies.php
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CollectFrequencies.php
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<?php
namespace Eris\Listener;
use Eris\Listener;
use Eris\Listeners;
use Exception;
use InvalidArgumentException;
/**
* @see Listeners::collectFrequencies()
*/
function collectFrequencies(callable $collectFunction = null)
{
return Listeners::collectFrequencies($collectFunction);
}
class CollectFrequencies extends EmptyListener implements Listener
{
private $collectFunction;
private $collectedValues = [];
public function __construct($collectFunction = null)
{
if ($collectFunction === null) {
$collectFunction = function (/*...*/) {
$generatedValues = func_get_args();
if (count($generatedValues) === 1) {
$value = $generatedValues[0];
} else {
$value = $generatedValues;
}
if (is_string($value) || is_integer($value)) {
return $value;
} else {
return json_encode($value);
}
};
}
$this->collectFunction = $collectFunction;
}
public function endPropertyVerification($ordinaryEvaluations, $iterations, Exception $exception = null)
{
arsort($this->collectedValues, SORT_NUMERIC);
echo PHP_EOL;
foreach ($this->collectedValues as $key => $value) {
$frequency = round(($value / $ordinaryEvaluations) * 100, 2);
echo "{$frequency}% $key" . PHP_EOL;
}
}
public function newGeneration(array $generation, $iteration)
{
$key = call_user_func_array($this->collectFunction, $generation);
// TODO: check key is a correct key, identity may lead this to be a non-string and non-integer value
// have a default for arrays and other scalars
if (!is_string($key) && !is_integer($key)) {
throw new InvalidArgumentException("The key " . var_export($key, true) . " cannot be used for collection, please specify a custom mapping function to collectFrequencies()");
}
if (array_key_exists($key, $this->collectedValues)) {
$this->collectedValues[$key]++;
} else {
$this->collectedValues[$key] = 1;
}
}
}

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text/x-php
Expires
Sat, Oct 3, 07:59 (1 w, 6 d ago)
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local-disk
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Storage Handle
bc/08/5ef209e0c163f3123ed69a1753a8
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CollectFrequencies.php (2 KB)

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