Re: Avoiding side effects

[Ole-Hjalmar Kristensen <ole-hjalmar.kristensen@substitute_employer_here.com>]

Yes, I think any program which use a read/write interface to a file
will have side effects in that sense. The only way I can think of for
avoiding this would be to mmap the whole file, then it will appear as
an array of bytes.

>>>>> "AW" == Anders Wirzenius <anders@no.email.thanks.invalid> writes:

<snip>

    AW> Thanks for that, too. The program I wrote did the job and was
    AW> sufficiently fast. My question was more about how to do it using
    AW> subprograms (functions) without side effects. 
    AW> I suppose "Process records from..." and "Process tail..." are
    AW> having side effects if coded as subprograms, as they advance the
    AW> pointer in the two files.

    AW> -- 
    AW> Anders

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