<?php
/*
dobu {
file:id(`example-00000095`) {
ascoos {
logo {`
__ _ ___ ___ ___ ___ ___ ___ ___
/ _` |/ / / __/ _ \ / _ \ / / / _ \ / /
| (_| |\ \| (_| (_) | (_) |\ \ | (_) |\ \
\__,_|/__/ \___\___/ \___/ /__/ \___/ /__/
`},
name {`ASCOOS OS`},
version {`1.0.0`}
},
example {
class {`TCollection`},
methods {`sumBy(), avgBy(), add(), Free()`},
source {`examples/kernel/core/tcollection/tcollection.sum_avg.php`},
category:langs {
en {`Objects Collection`},
el {`??????? ????????????`}
},
summary:langs {
en {`Demonstrates summing and averaging numeric properties`},
el {`??????????? ???????? ??? ???? ??? ??????????? ?????????`}
},
desc:langs {
en {`This example demonstrates how to use the sumBy() and avgBy() methods of TCollection to aggregate numeric values from a list of objects.
Non?numeric or null values are automatically ignored, ensuring accurate calculations.
The example shows how to populate a collection, compute the total and average of a specific property, and finally release memory resources.`},
el {`?? ?????????? ???? ??????????? ?? ????? ??? ??????? sumBy() ??? avgBy() ??? TCollection ??? ?? ??????????? ??????????? ?????
??? ??? ????? ????????????.
?? ??????????? ? null ????? ?????????? ????????, ?????????????? ??????? ????????????.
?? ?????????? ??????? ??? ????????????? ??? ???????, ??? ???????????? ?? ???????? ??? ? ????? ???? ???? ????????????? ?????????
??? ????? ??? ??????? ? ?????????? ??? ??????.`}
},
author {`Drogidis Christos`},
sincePHP {`8.4.0`}
}
}
}
*/
declare(strict_types=1);
use Ascoos\OS\Kernel\Core\Collections\TCollection;
$startTime = microtime(true);
$startMem = memory_get_usage();
// ????????????????????????????????????????????????
// <EN> Creating a collection with numerical data
// <EL> ?????????? ???????? ?? ?????????? ????????
// ????????????????????????????????????????????????
$collection = new TCollection();
$obj1 = new stdClass(); $obj1->score = 85;
$obj2 = new stdClass(); $obj2->score = 92;
$obj3 = new stdClass(); $obj3->score = 78;
$obj4 = new stdClass(); $obj4->score = null; // non-numeric ? ignored
$collection->add($obj1);
$collection->add($obj2);
$collection->add($obj3);
$collection->add($obj4);
// ????????????????????????????????????????????????
// <EN> Sum and average score
// <EL> ???????? ??? ????? ???? ????
// ????????????????????????????????????????????????
$totalScore = $collection->sumBy('score');
$averageScore = $collection->avgBy('score');
echo "<h1>TCollection::sumBy() and avgBy()</h1>";
echo "<pre>";
echo "Score total : {$totalScore}\n";
echo "Average score : " . ($averageScore !== null ? number_format($averageScore, 2) : 'No valid') . "\n";
echo "</pre>";
// ????????????????????????????????????????????????
// <EN> Memory cleaning
// <EL> ?????????? ??????
// ????????????????????????????????????????????????
$collection->Free();
echo "Example completed.\n";
// ==================== STATISTICS ====================
print_stats($startTime, $startMem);
?>
|
Download
