Callback that is recreated each time it is used.
Callback that is recreated each time it is used.
https://en.wikipedia.org/wiki/Evaluation_strategy#Call_by_name
Callback that isn't created until the first time it is used, after which it is reused.
Serves as a temporary placeholder for a callback until you supply a real implementation.
Serves as a temporary placeholder for a callback until you supply a real implementation.
Unlike ???
this doesn't crash, it just prints a warning to the console.
Also it's not really deprecated; that's just so you get a compiler warning as a reminder.
(Since version not really deprecated)
Serves as a temporary placeholder for a callback until you supply a real implementation.
Serves as a temporary placeholder for a callback until you supply a real implementation.
Unlike ???
this doesn't crash, it just prints a warning to the console.
Also it's not really deprecated; that's just so you get a compiler warning as a reminder.
(Since version not really deprecated)