Hello:
Im apologize for the OT but Im desperately looking for the answer to a
question regarding BitKeeper and, since I heard about its vitues and
also about it becoming open source in this list, I thought you guys
wouldn't mind helping me find the answer to my problem.
I've been using Git for some time now, but after hearing here about BK,
Im trying it out to see if I can change to it. At the moment I'm quite
happy with it and I very much like it's smaller than Git.
In Git I use a remote SSH "original" repo instead of a public (HTTP)
service, since I want to have distributed copies (several workstations
and laptops) and a "non interactive" copy on a server of mine. I'm not
sure I am making a lot of sense, since I'm not very expert on Git either
(I just use a few basic functions) and English isn't my first language.
What I actually need/want is to create a remote SSH repo from my local
(working) repo. I haven't found how to do that neither in the
documentation nor the Users Forum. Alas I havent found a mailing list to
subscribe to and ask for help. That's why I'm asking you guys for help.
Again sorry for the OT and thank you so much for reading until here. :)
Cheers,
Ángel
Way back then, when dinosaurs strode the earth and System/360 reigned
supreme, we were taught to slash our zeros and sevens (can't quite find
the glyphs for them right now) in order to distinguish them from Oscars
and Ones for the benefit of the keypunch girls (yes, really; I had the
hots for one of them at one time, but someone else took her) on those
green sheets.
In the time-mean I also saw a slash through "Z" (Zulu, Zed, Zee) in order
to distinguish it from a "2" (FIGURES TWO); WTF? And you *never* slashed
your ones, lest thou ended up with the contents of an 029 chad-box over
thine head...
These days, I merely slash my sevens by habit and it doesn't even raise an
eyebrow; even Oz Pigeon Post's mail mangler seems to accept it[*].
What're other bods' experiences?
[*]
Don't even mention Redfern, OK? Just don't... And as for getting off at
Redfern, well, I did a few times when I had a contract job around there.
-- Dave, bored at home
Remember I learned slashing my zeroes, small bar in sevens and zets,
curly letter X.
This was when a studied Mathematics fro a while at the University of
Technology in Delft, the Netherlands.. I think it had to do with
avoiding misunderstandings in scribbled formulars in a time we still
did a lot of real writing semester papers. This was around mid-70tish
for me.
Anybody feel like a text/voice chat on the ClassicCmp Discord server in about 13 hours, say 2200 UTC?
#coff and the General voice channel.
I'll pop on for an hour but start whenever you feel like.
Cheers, Warren
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
On Thu, 19 Mar 2020, Mike Markowski wrote:
>> I've been using my trusty HP-42S for so long that I can hardly remember
>> how to use a "normal" calculator :-)
>
> When my classmate's calculator died during an engineering exam, he asked
> if he could borrow my spare. I handed him my HP 32s and after a minute
> he whispered, "Where's the equals key?" He gave my calculator back.
> :-)
I did that to a financial controller in a previous life; she was not
amused... Hey, it was the only calculator that I had! I could see her
helplessly looking for the "=" key, then I took pity on her.
-- Dave
+COFF
On 3/20/20 8:03 AM, Noel Chiappa wrote:
> Maybe I'm being clueless/over-asking, but to me it's appalling that
> any college student (at least all who have _any_ math requirement at
> all; not sure how many that is) doesn't know how an RPN calculator
> works.
I'm sure that there are some people, maybe not the corpus you mention,
that have zero clue how an RPN calculator works. But I would expect
anybody with a little gumption to be able to poke a few buttons and
probably figure out the basic operation, or, ask if they are genuinely
confused.
> It's not exactly rocket science, and any reasonably intelligent
> high-schooler should get it extremely quickly; just tell them it's
> just a representational thing, number number operator instead of
> number operator number.
I agree that RPN is not rocket science. And for basic single operation
equations, I think that it's largely interchangeable with infix notation.
However, my experience is, as the number of operations goes up, RPN can
become more difficult to use. This is likely a mental shortcoming on my
part. But it is something that does take tractable mental effort for me
to do.
For example, let's start with Pythagorean Theorem
a² + b² = c²
This is relatively easy to enter in infix notation on a typical
scientific calculator.
However, I have to stop and think about how to enter this on an RPN
calculator. I'll take a swing at this, but I might get it wrong, and I
don't have anything handy to test at the moment.
[a] [enter]
[a] [enter]
[multiply]
[b] [enter]
[b] [enter]
[multiply]
[add]
[square root] # to solve for c
(12 keys)
Conversely infix notation for comparison.
[a]
[square]
[plus]
[b]
[square]
[square root]
(6 keys)
As I type this, I realize that I'm using higher order operations
(square) in infix than I am in RPN. But that probably speaks to my
ignorance of RPN.
I also realize that this equation does a poor job at demonstrating what
I'm trying to convey. — Or perhaps what I'm trying to convey is
incorrect. — I had to arrange sub-different parts of the equation so
that their results ended up together on the stack for them to be the
targets of the operation. I believe this (re)arrangement of the
equation is where most of my mental load / objection comes from with
RPN. I feel like I have to process the equation before I can tell the
calculator to compute the result for me. I don't feel like I have this
burden with infix notation.
Aside: I firmly believe that computers are supposed to do our bidding,
not the other way around. s/computers/calculators/
> I know it's not a key intellectual skill, but it does seem to me to
> be part of comon intellectual heritage that everyone should know,
> like musical scales or poetry rhyming. Have you ever considered
> taking two minutes (literally!) to cover it briefly, just 'someone
> tried to borrow my RPN calculator, here's the basic idea of how they
> work'?
I'm confident that 80% of people, more of the corpus you describe, could
use an RPN calculator to do simple equations. But I would not be
surprised if many found that the re-arrangement of equations to being
RPN friendly would simply forego the RPN calculator for simpler
arithmetic operations.
I think some of it is a mental question: Which has more mental load,
doing the annoying arithmetic or re-arranging to use RPN.
I believe that for the simpler of the arithmetic operations, RPN is
going to be more difficult.
All of this being said, I'd love to have someone lay out points and / or
counterpoints to my understanding.
--
Grant. . . .
unix || die
Moving to COFF ...
On Fri, Mar 20, 2020 at 1:24 PM Grant Taylor via TUHS <tuhs(a)minnie.tuhs.org>
wrote:
> Would you humor me with an example of what you mean by "thinking on the
> fly"? Either I'm not understanding you or we think differently.
>
I'll take a stab at it in a minute.
But first, I never cared either way. In college, I had an SR50 and my GF
had an HP45. I would say, between my EE friends we were probably split
50/50 between TI and HP. Generally, it was the RPN centric crew were
fiercely loyal as in the editor wars but would grab whichever was near me
when we all were working a problem set; but I knew a couple of folks that
hated RPN too.
It's possible, because of my undiagnosed dyslexia at the time, but I would
grab the closest calculator, pause to see which is was and then start
entering things as needed. But like Jon -- if I had the TI in my hands, I
found myself copying the equation. I was trying to pay attention to what
button I was pressing to check for any keystroke entry errors. Both types
had all of the same math functions so there was little difference in the
number of strokes, other than not needing parentheses on HP and how you
entered the calculation. With the HP, I was more aware of that equation I
was calculating because I was having to make sure I entered it in the
proper order so I could get the right answer. In my case, I was probably
a tad more careful because I was being forced to thinking in terms of
precedence - but I was thinking about the equation. Whereas with the TI I
was just hitting the button per the equation on the paper. I typed a tad
faster on the TI than the HP because I was not thinking as much but ... I
probably made more typing errors there because I thought less about what I
was doing.
Clem
