Method keys

src/main/java/net/starlark/java/eval/Dict.java:418–432

(StarlarkThread thread)

  }

  @StarlarkMethod(
      name = "keys",
      doc =
          "Returns the list of keys:"
              + "<pre class=\"language-python\">{2: \"a\", 4: \"b\", 1: \"c\"}.keys() == [2, 4, 1]"
              + "</pre>\n",
      useStarlarkThread = true)
  public StarlarkList<?> keys(StarlarkThread thread) throws EvalException {
    Object[] array = new Object[size()];
    int i = 0;
    for (K e : contents.keySet()) {
      array[i++] = e;
    }
    return StarlarkList.wrap(thread.mutability(), array);
  }

  private static final Dict<?, ?> EMPTY = new Dict<>(ImmutableMap.of());