Sfairadora

  • Reference Guide

remove_optional

remove_optional(lval)
The lval parameter must be an l-value referring to an optional data item. The function removes its value. The function returns no value (the type None).
If the l-value does not refer to an existent data item, an error is returned.
Note: an alternate method to remove an optional data item is assigning the NONE constant to it.

See Also