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Re^2: PerlIO, random write file access and O_CREAT (sysopen)

by vsespb (Hermit)
on May 29, 2013 at 15:46 UTC ( #1035873=note: print w/ replies, xml ) Need Help??


in reply to Re: PerlIO, random write file access and O_CREAT (sysopen)
in thread PerlIO, random write file access and O_CREAT

I thought sysopen can't be mixes with print/read, as buffered IO and unbuffered cannot be mixed? And I mentioned that I don't want to use syswrite

Or sysopen is not about unbuffered IO (in opposite to syswrite) ?

(Note that your code still unconditionally truncates the file each time.)
Ok, could you please example why? First file open mode is append, and second is read (read/write)


Comment on Re^2: PerlIO, random write file access and O_CREAT (sysopen)
Re^3: PerlIO, random write file access and O_CREAT (sysopen)
by tye (Cardinal) on May 29, 2013 at 15:58 UTC

    Oh, right, the append prevents the truncate. My mistake.

    sysopen is just a different way of getting a file handle. It has no bearing on whether you use buffered or unbuffered I/O with that handle.

    - tye        

      Ok, thanks!

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