Re: why is it called a buffer

On Apr 10, 9:04=A0am, tinke...@[EMAIL PROTECTED]
 (Tinkerer) wrote:
> m_l_g3 <m_l...@[EMAIL PROTECTED]
> wrote:
> My (admittedly very brief) experience is that the comma operator can't
> poke data into previously named storage, which would make it unsuitable
> for what I was hoping it would be useful for.

It ALLOTS a cell and stores the top value in stack in that cell. So:

48 CELLS buffer: my-buffer 0 ,

does not put 0 at the head of my-buffer, but after the end ... *first*
buffer did an ALLOT, and *then* , did an ALLOT (or equivalent).

OTOH,

CREATE my-buffer 0 , 47 CELLS ALLOT

would stuff a 0 at the head of a buffer "my-buffer" followed by 47
cells of uninitialized dataspace.

Often that kind of use of ``,'' will be inside a defining word, with
the ``,'' helping to build the word being defined when the defining
word executes.