Sleeping less than a second in OCaml

The Unix.sleep function can suspend the program for whole seconds, but how can you suspend it for less than a second?


The classical Unix solution for this is to use select() with no file descriptors:

let minisleep (sec: float) =
    ignore ( [] [] [] sec)

The Thread.delay function pauses the thread for the given number of seconds, but it takes a float, allowing you to pause the thread for less than a second.

from Unix module

val sleepf : float -> unit

Stop execution for the given number of seconds. Like sleep, but fractions of seconds are supported.

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