/**
* Set the default value of a field.
*
* @param string $field
* @param mixed $value
*
* @throws InvalidArgumentException
* @return $this
*/
public function defaultValue($field, $value)
{
Arguments::define(Boa::string(), Boa::any())->check($field, $value);
$this->defaults = $this->defaults->insert($field, $value);
return $this;
}
/**
* @return AbstractTypeConstraint
*/
public function getValueType()
{
// TODO: Figure out how to make this nicer.
return Boa::any();
}
/**
* Get the type annotation for a field.
*
* @param string $fieldName
*
* @return AbstractTypeConstraint
*/
public function getFieldType($fieldName)
{
return Maybe::fromMaybe(Boa::any(), $this->getFieldAnnotation($fieldName, static::ANNOTATION_TYPE));
}
/**
* Returns a single item by iterating through the list, successively calling
* the iterator function and passing it an accumulator value and the current
* value from the array, and then passing the result to the next call.
* (From Ramda).
*
* @param callable $function
* @param mixed $initial
* @param array|Traversable $foldable
*
* @throws InvalidArgumentException
* @return mixed
*/
public static function foldl(callable $function, $initial, $foldable)
{
Arguments::define(Boa::func(), Boa::any(), Boa::leftFoldable())->check($function, $initial, $foldable);
return ComplexFactory::toLeftFoldable($foldable)->foldl($function, $initial);
}
