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On Sat, Sep 25, 2010 at 01:00:29PM +0200, Arnold Krille wrote:

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> On Saturday 25 September 2010 10:49:35 Chris Cannam wrote:

> > On Sat, Sep 25, 2010 at 8:06 AM, Joel Roth  wrote:

> > > I guess I am reacting to what I imagine is language

> > > preference projected onto absolute judgment on merits of a

> > > particular language.

> > >

> > > Perhaps you are speaking from years of software development

> > > experience.

> >

> > I have quite a lot of (mostly enjoyable) experience writing Perl over

> > the years, including some fairly big programs, and hardly any

> > experience with Python (a language I dislike on instinct).  But my

> > experience with Perl has been that returning to my own projects is

> > harder than it should be, and harder than in languages like C and C++.

> >  That is probably due to my own limitations, particularly when it

> > comes to discipline, but it's empirically true in my case.

> >

> > The real assumption I made back there was that Python code is any

> > easier to return to -- I haven't the experience to judge, really, I'm

> > just going on hearsay from friends and acquaintances.

>

> Python actually forces you to be more disciplined. Which really make returning

> to the code easy.

I believe that's the philosophy that there should be one

right way to approach a particular task. Perl suffers (and

benefits) from its motto TIMTOWTDI (pronounced tim-toady --

this is more than one way to do it.)
> Using python for small apps/tools is easy. Using python for large projects is

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> easy.

> Extending your C/C++-project with python is easy.

> Using your own C/C++ parts in python is easy.

That's a big advantage of python over perl right now: python's

ctypes library. There is a project now to port ctypes to

perl. 
Perl had previously borrowed Python's object mechanism. Just

now it is finally being replaced, by Moose/Mouse in Perl 5,

and the internal object system in Perl 6.
I, for one, have had a great time with the python-derived

perl object system.
Otherwise, perl's vast CPAN libraries, cover many problem

domains.
> Porting parts of your python project to C/C++ is easy (think prototyping in

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> python and port to compiled-language once the interface is finished and the

> optimizations begin).

For optimizing perl, we have Devel::NYTProf, which

profiles the time spent in each subroutine. (As the name

suggests, the New York Times underwrote the development

costs.)
> I for one am very glad I learned python a few years back. Its fun.
Good for you!  So is perl. :-)
I thought I would like to learn some other language, either

python, ruby, Tcl or Forth, but usually I have some

practical problem to get done, and the more familiar

language gets used.
> Disclaimer: I don't have any experience in perl, but what I get from the perl-

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> snapshots in German Linux-Magazin, it looks harder then python...

Perl does have a few syntax quirks. The deferencing syntax

is particularly awkward. There is also the oddity (and

feature) of list/scalar context.
For me, reading music is awkward, and so is reading python,

but I don't blame the notation in either case.
Best,
Joel
> Have fun,

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>

> Arnold

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--

Joel Roth

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