PHP · Theory

Operators

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Theory

15/352

Operators

Operators sits in a viva board. Farhan’s job is a Operators dry-run. Write that first.

For Operators, Apache/Nginx is in play. Don’t blame it until you have traced a Operators dry-run.

Without Operators, a viva board gets messy and a Operators dry-run is hard to trust.

Farhan ships Operators in a viva board. That is the use case worth saying.

Don’t do this with Operators — skipping the failure case for Operators. Interviewers spot it in ten seconds.

Operators is not a lonely heading. Farhan ties it to a Operators dry-run.

Close Operators with: “If I skip it, a Operators dry-run goes wrong like this: skipping the failure case for Operators.”

Exam tip

For Operators: definition + a viva board + one failure.

Example

<?php
// Operators
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

Operators: scores array, print avg, then high marks. Say the output.

Short notes

DefOperators — Farhan uses it for a Operators dry-run in a viva board.
RuleOperators → one Operators step Farhan can write from memory.
RememberOperators + Apache/Nginx (a viva board).
UseOperators in a viva board (a Operators dry-run).
TrapOperators — skipping the failure case for Operators.
ExOperators → a Operators dry-run.

PHP · Theory

Operators

← All stacks

Theory

15/352

Operators

Operators sits in a viva board. Farhan’s job is a Operators dry-run. Write that first.

For Operators, Apache/Nginx is in play. Don’t blame it until you have traced a Operators dry-run.

Without Operators, a viva board gets messy and a Operators dry-run is hard to trust.

Farhan ships Operators in a viva board. That is the use case worth saying.

Don’t do this with Operators — skipping the failure case for Operators. Interviewers spot it in ten seconds.

Operators is not a lonely heading. Farhan ties it to a Operators dry-run.

Close Operators with: “If I skip it, a Operators dry-run goes wrong like this: skipping the failure case for Operators.”

Exam tip

For Operators: definition + a viva board + one failure.

Example

<?php
// Operators
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

Operators: scores array, print avg, then high marks. Say the output.

Short notes

DefOperators — Farhan uses it for a Operators dry-run in a viva board.
RuleOperators → one Operators step Farhan can write from memory.
RememberOperators + Apache/Nginx (a viva board).
UseOperators in a viva board (a Operators dry-run).
TrapOperators — skipping the failure case for Operators.
ExOperators → a Operators dry-run.

Operators

Example

Short notes

Questions

Operators

Example

Short notes

Questions