How can this done?

[DrKrar]

how can one ask for input from REPL (STDIN), waiting for some time then return any way if there is no input??

[adamslc]

I answered a similar question here:

Polling keyboard input looking for e.g. 'q' in a loop to 'gracefully' terminate execution

I have a main loop that continuously acquires camera frames and some digital signals and progressively stores all data using the HDF5 module. I want this loop to terminate when the user presses a single keyboard key, e.g. ‘q’, by ‘gracefully’ releasing all the open files and hardware resources. The key idea behind this loop is that it should never block or otherwise spend a significant amount of time executing a single statement. Ideally I want the time spent inside the loop body on all statemen…

[DrKrar]

Dear @adamslc
i ask for a some how different thing.
if there is no input (a user to interact) after some time. return with a default value then.

[dpsanders]

Instead of asking for input, just write functions for the user to call and pass in arguments.

[DrKrar]

@dpsanders i want a default behavior in absence of a user who supposed to input to REPL.

[dpsanders]

In what kind of application or context?

[DrKrar]

@dpsanders

In what kind of application or context?

during receiving input from REPL.
thanks.

[dpsanders]

If you’re receiving input from the repl, then there must be a user controlling everything, no?

[DrKrar]

i want to give the user a time frame to respond else a default will apply.