[Haskell-cafe] book "Haskell Data Analysis Cookbook" by Nishant Shukla

Vasili I. Galchin vigalchin at gmail.com
Sun Jul 13 00:32:21 UTC 2014

that was exactly my point ... I.e. if  between two lines the "Haskell
thread-of-execution" is interrupted ... and another thread/process ...
.deletes the file then 2nd "line" of code would cause an exception to
be thrown ... i.e. because of non-existence .. . Brandon, aren't we
saying the same thing ... if so, forgive, my English  .. :-)


On Sat, Jul 12, 2014 at 7:02 PM, Brandon Allbery <allbery.b at gmail.com> wrote:
> On Sat, Jul 12, 2014 at 7:54 PM, Vasili I. Galchin <vigalchin at gmail.com>
> wrote:
>> --  these two lines are non-thread safe     .. yes?? to be thread-safe
>> the  above line and the following line would have to be together
>> atomic ....
> Not even then would it really be safe; it should trap the exception from
> readFile failing, instead of checking existence in a separate step.
> --
> brandon s allbery kf8nh                               sine nomine associates
> allbery.b at gmail.com                                  ballbery at sinenomine.net
> unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net

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