$|=1; sets autoflush on the current default output, while select((select(STDOUT), $|=1)[0]); starts with some default output, then selects STDOUT as the default output and sets autoflush there, then selects the original starting default output. These are certainly different (especially when the starting default output isn't STDOUT.)
chas

In reply to Re: Unbuffered Output... by chas
in thread Unbuffered Output... by Anonymous Monk

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