/** * Get the value of the provided key. * * @param string $key * * @return Maybe */ public function lookup($key) { if (!$this->member($key)) { return Maybe::nothing(); } return Maybe::just($this->value->offsetGet($key)); }
/** * Get the value of the provided key. * * @param string $key * * @return Maybe * @throws CoreException */ public function lookup($key) { foreach ($this->value as $innerKey => $value) { if ($key === $innerKey) { return Maybe::just($value); } } return Maybe::nothing(); }
/** * Render the object into a string. * * @return mixed */ public function render() { $addColon = function ($label) { return Maybe::just(vsprintf('%s:', [$label])); }; return (new Form($this->attributes, $this->spec->getAnnotations()->map(function ($_, $key) use($addColon) { return new Row(['class' => 'form-group'], [new Node('label', ['class' => 'col-sm-2 form-control-label'], Maybe::fromMaybe('', $this->spec->getFieldLabel($key)->bind($addColon))), new Div(['class' => 'col-sm-8'], $this->renderFullField($key))]); })->append(ArrayMap::of([new Row(['class' => 'form-group'], [new Div(['class' => 'col-sm-offset-2 col-sm-10'], [new Div(['class' => 'btn-group'], [new Button(['type' => 'reset', 'class' => 'btn btn-secondary'], 'Reset'), new Button(['type' => 'submit', 'class' => 'btn btn-primary'], 'Submit')])])])]))))->render(); }
/** * @param callable $predicate * * @return Maybe */ public function find(callable $predicate) { $result = Maybe::nothing(); $this->each(function ($value, $key) use($predicate, &$result) { if ($predicate($value, $key, $this)) { $result = Maybe::just($value); return false; } return true; }); return $result; }
public function testFmap() { $just = Maybe::just('DOGE'); $nothing = Maybe::nothing(); $lowerCase = function ($string) { return Maybe::just(strtolower($string)); }; $result1 = $just->fmap($lowerCase); $result2 = $nothing->fmap($lowerCase); $this->assertTrue($result1->isJust()); $this->assertTrue($result2->isNothing()); }
/** * @param mixed $key * * @return Maybe */ public function lookup($key) { if ($this->member($key) === false) { return Maybe::nothing(); } $copy = array_merge($this->value); return Maybe::just($copy[$key]); }