[R] show messages during a long process

[Juan Ramon Gonzalez]

Hi,

I have a function which takes some time to execute (20 sec.) and I want to
show the progress of the execution with simple messages such as "10% done",
"20% done", ... (with a simple "cat" function). The problem is that all the
messages appear together when the execution of the function is over. How can
I show each message at their corresponding time?

Thanks,

Juan

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