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or

switch.or

(f Lazy switch.this)
 => 
switch.this
[Contains abstract features]
if this switch is nil return the result of f
otherwise just return this switch.
0.094dev (2025-06-18 15:08:51 GIT hash 89cffc23ae669b0898a5564fefbf793fcb8e5ca7 built by fridi@fzen)