Re: concatenate matrices?
- To: mathgroup at smc.vnet.net
- Subject: [mg118154] Re: concatenate matrices?
- From: "Nasser M. Abbasi" <nma at 12000.org>
- Date: Thu, 14 Apr 2011 07:08:11 -0400 (EDT)
- References: <io6d37$dr4$1@smc.vnet.net>
- Reply-to: nma at 12000.org
On 4/14/2011 2:00 AM, Robert Rosenbaum wrote:
> DrMajorBob,
>
> A little off topic, but I was wondering why you suggested the prefix notation
>> Transpose@{y1, y2}
> instead of
> Transpose[{y1,y2}]
>
> I've noticed other people doing the same on this mailing list, and sometimes
> suggesting postfix as well. I would guess that Transpose[{y1,y2}] is more
> readily understood by most users. Is there a reason that you and others
> often suggest the arguably less common prefix or postfix notations?
>
For me, sometimes I use @ for 3 main reasons:
1) If the expression has too many [[[[ ... ]]]], then using @ helps
eliminates a pair of [], making the expression easier to read.
2) typing foo@x has one less key stroke than foo[x]. So, when
my fingers are tired, I tend to use @ more ;)
3) For existing expression, if you wanted to insert a call
to a function 'foo' in the middle of it, then by writing
.....foo at ....
you do not have to worry about having to go look for where to
insert the second ']' at the other end, which will be in a place in
the middle of the expression as well.
...... foo[......]......
The editor can help with its highlighting the matching [], since you
first still need find the correct location to insert the right ]. In
a complicated expression, then can take bit more time.
Easier to just type foo@
As for the more easily understood part, this is all a matter of time.
With time, you'll find @ just as easy to look at as [...]
--Nasser