Root Access

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Sathya

04:41

@studiohack the one I'm working on is right now a desktop app, and it's just a port of Stack Exchange editor toolkit to C#.. will see about FF addons perhaps later? No idea.

Mark Szymanski

04:57

Good evening, everyone.

OH YAY MOBILE SU :D

Also, just to make sure. Downvotes on answers are supposed to be used on incorrect answers that don't work, right?

Sathya

@MarkSzymanski one of the many uses of downvotes, yes. Good evening.

would be nice of you to mention why you put in the downvote.

Mark Szymanski

@Sathya: Alright, thanks. Just wanted to make sure since I sometimes downvotes answers when they don't work, and of course I accompany them with comments. But occasionally people get worked up over it.

Sathya

@MarkSzymanski yeah, don't worry about people getting worked up. Happens. Flag if you run into a suspicious vote pattern, but mostly the StackExAI™ will take care of it

Mark Szymanski

Yeah, one time I got a massive downvote flood put on me. Lost like 20 rep. Thankfully the system got it taken care of.

3 hours later…

Sathya

08:18

@studiohack WIP - try it when you can - Desktop version of Stack Exchange editor toolkit

Sathya

09:15

stupid me deleted my sbhat.me FTP account.... and all files in that directory :(

tombull89

10:08

yaya I've been hit by one of random's closing streaks

Q: WAMP suitable for web hosting?

I'm looking to run a small website at home. I've got the port forwarding all sorted and working and was looking to see if WAMP would be suitable as I was under the impression that it is only ideally suitable for small localised testing rather than used as a full webserver. If this is the case, ca...

one of my old questions, though...

Sathya

@tombull89 want me to wipe it?

Journeyman Geek

@tombull89: personally i'd say, just use a VM to do hosting

Nyuszika7H

10:50

1 hour later…

HackToHell

12:10

hi guys have a funny :) problem care explaining ??

Journeyman Geek

HackToHell

open windows calculator

press 4

then root symbol

then - symbol

then 2 then = symbol

basically [Sqrt(4)] - 2

== 0

Journeyman Geek

that is odd

HackToHell

right ?

why is that ? coming

@JourneymanGeek any idea why ?

Sathya

floating point arithmetic is tricky

HackToHell

12:17

@Sathya i do not get it man 2-2 means zero ..

not some crap to the power 19

Sathya

1 min ago, by Sathya

floating point arithmetic is tricky

HackToHell

this one gets it right metacalc.com

badly coded calculator ??

I am gonna open a new thread .. :)

Mokubai

@HackToHell That's actually something to the power of -19, in other words it's something like 0.000000000000000000000001 that it's giving as the answer, as @Sathya says, floating point is tricky...

HackToHell

@Mokubai but then how come it comes to 0.000000000000000000000001 .. 2.00000000000000000000000000000 - 2 must be 0.00000000000000000000 right ?

LOL superuser.com/questions/208887/…

Sathya

@HackToHell because sqrt of 4 == 2.0000000000000000000106

HackToHell

12:26

@Sathya i gave sqrt of 4 only !

Mokubai

In theory, yes, but for some reason the 2.000blah is being rounded to a sensible value, but 0.something is not...

Sathya

the iterative methods used for calculating square roots can give tricky results due to way floating point arithmetic works on computers

HackToHell

ok ...

Mokubai

Most "proper" calculators have a "fixed precision" mode where you can specify the number of decimal points to show, but that sort of thing is not available in the Windows Calculator

HackToHell

so calculating the square root is tricky ..

Mokubai

12:35

@HackToHell floating point calculation always has problems on computers, it just seems that close to 0 the windows calculator does not take account of them...

Some "light" reading: en.wikipedia.org/wiki/Floating_point#Accuracy_problems

HackToHell

@Mokubai just like how a single binary number stands for positive and negative ...

Mokubai

depending on how you interpret it, yes

In order to do sqrt(4) it presumably gets converted to a floating point number (with inaccuracies) and then the function is run, this gives a slightly inaccurate answer and then subtracting the 2 shows you the floating point and calculation errors.

3 hours later…

DMA57361

15:51

afternoon all

Sathya

16:09

aft @DMA

DMA57361

@Sathya how's things?

Sathya

hot :( @DMA

it's 34-38 deg :(

DMA57361

ouch

can't abide that much heat :/

Sathya

the heat is causing my laptop to get hotter and causing my room temp to up...

talk about a chain reaction

DMA57361

a heat-based negative feedback loop; fun times :/

or positive feedback loop, I forget

getting my first pepper on my pepper plants :D

Sathya

16:17

@DMA57361 yay!

DMA57361

only ~1cm big atm, but there's several other flowers as well now, so should have quite a few soon

Sathya

sounds good

do post some pics

DMA57361

there's a few of the not-so-healthy bits over on gardening.se

Nyuszika7H

Hi all! :)

Sathya

hi @Nyuszika7H

@DMA57361 indeed

DMA57361

16:20

guess it'll give me an excuse to work out how to send pics to twitter properly :P

Sathya

I'd just setup a posterous account, enable auto post to twitter

then on, just email to [email protected] :)

Nyuszika7H

Anyone got ideas how to get Alt-nnnn keyboard shortcuts to work under Linux?

DMA57361

@Sathya f/e, maybe, else I'll just use dropbox or something

Sathya

@Nyuszika7H seems like a good question to ask at you-know-where

Nyuszika7H

@Sathya SU? ;)

Sathya

16:28

ta-dah ;)

Nyuszika7H

Q: How to get Alt-nnnn keyboard shortcuts to work under Linux?

A few weeks ago, I moved from Windows to Linux, and one thing I'm missing is Altnnnn keyboard shortcuts to insert an em dash and other things. Is there any way to get them working under Linux? I'm using Arch Linux, if that matters.