Also, you might find the "First Program" example interesting (its available in
your Help browser, and also on the online documentation web site):
http://docs.factorcode.org/content/article-first-program.html
On Saturday, February 18, 2012 at 8:27 AM, Marshall Lochbaum wrote:
> In terms of tools to use, the listener is for interactive evaluation. Since
> Factor programs are often short enough to fit on a few lines, you can type
> them into the listener and see what they do.
>
> Programming in a concatenative language is very different. You certainly
> don't want to think in terms of variables and assignment. Instead, think
> about the intermediate results you want, and how to put them onto the stack.
> In this case, the relevant result is the sum of the list, but you also need
> to keep the original list around. After you have those two, you divide. Using
> the math.vectors command v/n (vector divided by scalar), we get
> { 1 2 3 } ! the list
> dup ! make a copy of the list
> length ! get the length of the copy
> v/n ! divide the two
>
> Words like dup are only suitable for very simple tasks since they are
> confusing when used excessively. Instead, the combinators cleave, spread,
> apply and their derivatives like bi, bi*, tri@, etc. should be used. The
> listener prints the stack effect of each command at the bottom, so if you
> forget which one is which, you can type them in and see. In this case the
> program becomes
> { 1 2 3 } [ ] [ length ] bi v/n
> .
>
> Marshall
>
> On Sat, Feb 18, 2012 at 3:52 AM, Вадим Тукаев <vadim_tuk...@bk.ru
> (mailto:vadim_tuk...@bk.ru)> wrote:
> > Please help me to begin programming. I can't do even one step. I have no
> > experience in concatenative programming. I now read the book by Brodie, but
> > I understand it badly. And that little bits of information, that I
> > understand, I can not translate in the Factor. Please give me (and other
> > newbies) simple manual. How to write first program step by step.
> >
> > Some questions:
> > 1. What is best win-editor for Factor? Oh no, not Emacs! I mean something
> > like Programmer's Notepad.
> > 2. What is Listener? It can be used as the editor? I open Listener,
> > Browser, Errors...
> > 3. I need some simple program. For example, calculation of a percentage
> > parity of numbers. Input data: 1, 2, 3. Output data must be 0.167, 0.333,
> > 0.5. How to create such program? I don't ask, that you have solved this
> > problem for me. Show, how it is necessary to argue. My brain slip.
> > ------------------------------------------------------------------------------
> > Virtualization & Cloud Management Using Capacity Planning
> > Cloud computing makes use of virtualization - but cloud computing
> > also focuses on allowing computing to be delivered as a service.
> > http://www.accelacomm.com/jaw/sfnl/114/51521223/
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> ------------------------------------------------------------------------------
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing
> also focuses on allowing computing to be delivered as a service.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
>
> _______________________________________________
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> Factor-talk@lists.sourceforge.net (mailto:Factor-talk@lists.sourceforge.net)
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>
>
------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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