public static Enumerable select()

in src/main/java/net/hydromatic/linq4j/EnumerableDefaults.java [1372:1402]

• 26 lines of code
• 2 McCabe index (conditional complexity)

  public static <TSource, TResult> Enumerable<TResult> select(
      final Enumerable<TSource> source,
      final Function1<TSource, TResult> selector) {
    if (selector == Functions.identitySelector()) {
      //noinspection unchecked
      return (Enumerable<TResult>) source;
    }
    return new AbstractEnumerable<TResult>() {
      public Enumerator<TResult> enumerator() {
        return new Enumerator<TResult>() {
          final Enumerator<TSource> enumerator = source.enumerator();

          public TResult current() {
            return selector.apply(enumerator.current());
          }

          public boolean moveNext() {
            return enumerator.moveNext();
          }

          public void reset() {
            enumerator.reset();
          }

          public void close() {
            enumerator.close();
          }
        };
      }
    };
  }