src/precore/util/FluentIterable.php
public function transformAndConcat(callable $transformer) : FluentIterable
    {
        return self::from(Iterables::concatIterables($this->transform($transformer)));
    }
public function transformAndConcat(callable $transformer) : FluentIterable
    {
        return self::from(Iterables::concatIterables($this->transform($transformer)));
    }
public function transformAndConcat ( callable $ transformer ) : FluentIterable { return self :: from ( Iterables :: concatIterables ( $ this -> transform ( $ transformer ) ) ) ; }
Applies function to each element of this fluent iterable and returns a fluent iterable
with the concatenated combination of results. Transformer returns a Traversable of results.

@param callable $transformer
@return FluentIterable
@see flatMap
Applies function to each element of this fluent iterable and returns a fluent iterable with the concatenated combination of results . Transformer returns a Traversable of results .