GLibDateTimeformat_iso8601

gchar*
g_date_time_format_iso8601 (
  GDateTime* datetime
)

Format datetime in ISO 8601 format, including the date, time and time zone, and return that as a UTF-8 encoded string.

Since GLib 2.66, this will output to sub-second precision if needed.

Available since:

2.62

Returns:	`gchar*`
	A newly allocated string formatted in ISO 8601 format or `NULL` in the case that there was an error. The string should be freed with g_free().
	The caller of the method takes ownership of the data, and is responsible for freeing it.
	The return value can be `NULL`.
	The value is a NUL terminated UTF-8 string.