prependLen

Prepends @len bytes of @val to @string.

If @len is positive, @val may contain embedded nuls and need not be nul-terminated. It is the caller's responsibility to ensure that @val has at least @len addressable bytes.

If @len is negative, @val must be nul-terminated and @len is considered to request the entire string length. This makes g_string_prepend_len() equivalent to g_string_prepend().

Parameters