PHP · Theory

Levenshtein()

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Theory

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Levenshtein()

Levenshtein() is simple if you keep it on paper. Zara uses it for Zara walking through Levenshtein in a viva board.

For Levenshtein(), the PHP runtime is in play. Don’t blame it until you have traced Zara walking through Levenshtein.

Levenshtein() exists so Zara can keep Zara walking through Levenshtein correct in a viva board.

Levenshtein() shows up in a viva board. Name Zara walking through Levenshtein, not “a real-world scenario”.

If Zara walking through Levenshtein breaks under Levenshtein(), check only reciting the name of Levenshtein first.

Levenshtein() is not a lonely heading. Zara ties it to Zara walking through Levenshtein.

Close Levenshtein() with: “If I skip it, Zara walking through Levenshtein goes wrong like this: only reciting the name of Levenshtein.”

Exam tip

For Levenshtein(): definition + a viva board + one failure.

Example

<?php
// Levenshtein()
$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";
}

Levenshtein(): scores array, print avg, then high marks. Say the output.

Short notes

DefLevenshtein() — Zara uses it for Zara walking through Levenshtein in a viva board.
RuleLevenshtein() → one Levenshtein step Zara can write from memory.
RememberLevenshtein() + the PHP runtime (a viva board).
UseLevenshtein() in a viva board (Zara walking through Levenshtein).
TrapLevenshtein() — only reciting the name of Levenshtein.
ExLevenshtein() → Zara walking through Levenshtein.

PHP · Theory

Levenshtein()

← All stacks

Theory

204/352

Levenshtein()

Levenshtein() is simple if you keep it on paper. Zara uses it for Zara walking through Levenshtein in a viva board.

For Levenshtein(), the PHP runtime is in play. Don’t blame it until you have traced Zara walking through Levenshtein.

Levenshtein() exists so Zara can keep Zara walking through Levenshtein correct in a viva board.

Levenshtein() shows up in a viva board. Name Zara walking through Levenshtein, not “a real-world scenario”.

If Zara walking through Levenshtein breaks under Levenshtein(), check only reciting the name of Levenshtein first.

Levenshtein() is not a lonely heading. Zara ties it to Zara walking through Levenshtein.

Close Levenshtein() with: “If I skip it, Zara walking through Levenshtein goes wrong like this: only reciting the name of Levenshtein.”

Exam tip

For Levenshtein(): definition + a viva board + one failure.

Example

<?php
// Levenshtein()
$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";
}

Levenshtein(): scores array, print avg, then high marks. Say the output.

Short notes

DefLevenshtein() — Zara uses it for Zara walking through Levenshtein in a viva board.
RuleLevenshtein() → one Levenshtein step Zara can write from memory.
RememberLevenshtein() + the PHP runtime (a viva board).
UseLevenshtein() in a viva board (Zara walking through Levenshtein).
TrapLevenshtein() — only reciting the name of Levenshtein.
ExLevenshtein() → Zara walking through Levenshtein.

Levenshtein()

Example

Short notes

Questions

Levenshtein()

Example

Short notes

Questions