Method

ArrowListArrayBuilderappend_value

since: 0.12.0

Declaration [src]

gboolean
garrow_list_array_builder_append_value (
  GArrowListArrayBuilder* builder
  GError** error
)

Description

No description available.

Available since: 0.12.0

Return value

Type: gboolean

TRUE on success, FALSE if there was an error.

It appends a new list element. To append a new list element, you need to call this function then append list element values to value_builder. value_builder is the GArrowArrayBuilder specified to constructor. You can get value_builder by garrow_list_array_builder_get_value_builder().

GArrowInt8ArrayBuilder *value_builder;
GArrowListArrayBuilder *builder;

value_builder = garrow_int8_array_builder_new();
builder = garrow_list_array_builder_new(value_builder, NULL);

// Start 0th list element: [1, 0, -1]
garrow_list_array_builder_append(builder, NULL);
garrow_int8_array_builder_append(value_builder, 1);
garrow_int8_array_builder_append(value_builder, 0);
garrow_int8_array_builder_append(value_builder, -1);

// Start 1st list element: [-29, 29]
garrow_list_array_builder_append(builder, NULL);
garrow_int8_array_builder_append(value_builder, -29);
garrow_int8_array_builder_append(value_builder, 29);

{
  // [[1, 0, -1], [-29, 29]]
  GArrowArray *array = garrow_array_builder_finish(builder);
  // Now, builder is needless.
  g_object_unref(builder);
  g_object_unref(value_builder);

  // Use array...
  g_object_unref(array);
}