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Refactor routine from sequential cohesion to functional cohesion
<?php
//Example of routine with sequential cohesion
function randomRoutineName($birthDate) {
// Calculate the age from the birth date
$currentAge = // Stuff to get current age from birth date
// Calculate the retirement time from the current age
$retirementTime = // Stuff to get retirement time from current age
}
// Refactor to make this routine above functionally cohesive by separate to two routines
function getAge($birthDate) {
// Stuff to get current age from birth date
}
function getRetirementTime($currentAge) {
// Stuff to get retirement time from current age
}
// Now both getAge and getRetirementTime routines have functional cohesion. Other routines could call either routine or both routine
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