JuniorTheoryCommon

What does the program print?

PHP

<?php

enum Status: string
{
    case Draft = 'draft';
    case Live = 'live';
}

$s = Status::from('live');
$t = Status::tryFrom('x');
echo $s->name, ' ', $s->value, ' ', $t === null ? 'none' : 'some', "\n";

Live live none

Expecting name to be the backing value: name is the case's identifier as written (Live), while value is the scalar behind it ('live').
Expecting tryFrom to throw like from: from throws a ValueError for an unknown value, while tryFrom returns null, which you check or replace with ??.

When would you choose from over tryFrom for a value that came from a request?
What does Status::cases() return?

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JuniorTheoryCommon

What does the program print?

PHP

<?php

enum Status: string
{
    case Draft = 'draft';
    case Live = 'live';
}

$s = Status::from('live');
$t = Status::tryFrom('x');
echo $s->name, ' ', $s->value, ' ', $t === null ? 'none' : 'some', "\n";

Live live none

Expecting name to be the backing value: name is the case's identifier as written (Live), while value is the scalar behind it ('live').
Expecting tryFrom to throw like from: from throws a ValueError for an unknown value, while tryFrom returns null, which you check or replace with ??.

When would you choose from over tryFrom for a value that came from a request?
What does Status::cases() return?

Back to questions Open topic in roadmap →Answer it yourself — Quiz