PHP · Theory

Traits

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Traits

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

Do Traits once by hand. one Traits step Neha can write from memory. Change one input. Say the new result out loud.

Traits exists so Neha can keep a Traits dry-run correct in a viva board.

Neha ships Traits in a viva board. That is the use case worth saying.

If a Traits dry-run breaks under Traits, check only reciting the name of Traits first.

Traits is not a lonely heading. Neha ties it to a Traits dry-run.

Close Traits with — “If I skip it, a Traits dry-run goes wrong like this: only reciting the name of Traits.”

Exam tip

Say Traits in one breath, then one Traits step Neha can write from memory, then only reciting the name of Traits.

Example

<?php
// Traits
$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";
}

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

Short notes

DefTraits — Neha uses it for a Traits dry-run in a viva board.
RuleTraits → one Traits step Neha can write from memory.
RememberTraits + a .php page (a viva board).
UseTraits in a viva board (a Traits dry-run).
TrapTraits — only reciting the name of Traits.
ExTraits → a Traits dry-run.

PHP · Theory

Traits

← All stacks

Theory

334/352

Traits

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

Do Traits once by hand. one Traits step Neha can write from memory. Change one input. Say the new result out loud.

Traits exists so Neha can keep a Traits dry-run correct in a viva board.

Neha ships Traits in a viva board. That is the use case worth saying.

If a Traits dry-run breaks under Traits, check only reciting the name of Traits first.

Traits is not a lonely heading. Neha ties it to a Traits dry-run.

Close Traits with — “If I skip it, a Traits dry-run goes wrong like this: only reciting the name of Traits.”

Exam tip

Say Traits in one breath, then one Traits step Neha can write from memory, then only reciting the name of Traits.

Example

<?php
// Traits
$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";
}

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

Short notes

DefTraits — Neha uses it for a Traits dry-run in a viva board.
RuleTraits → one Traits step Neha can write from memory.
RememberTraits + a .php page (a viva board).
UseTraits in a viva board (a Traits dry-run).
TrapTraits — only reciting the name of Traits.
ExTraits → a Traits dry-run.

Traits

Example

Short notes

Questions

Traits

Example

Short notes

Questions