This is an automatically generated page and cannot be edited directly. Text in Composite pages, (URLs starting with 'routine' or 'syntax') can be edited by clicking on the link labeled 'in context', and editing the text there.

Exit this popup by pressing <Escape>, or clicking on X or on the background.

Empty
Combined from primary sources listed below.

In Slip§

See primary documentation in context for constant Empty

Empty is a Slip of the empty List.

say "".comb ~~ Empty;
# OUTPUT: «True␤»

For example, these constructs with a failing test return Empty:

do if 0 {};
(42 if 0);
do with Any {};
(42 with Any);