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1  Economy / Services / Re: Programmer searched. Observing Website with a script independent from browser. on: February 06, 2014, 02:34:50 AM
Probably get more replies if you mention the name of the site. Or what exactly the javascript is doing and what you want to extract from it. Right now it is incredibly vague.
2  Economy / Services / Re: Programming lessons wanted on: January 27, 2014, 02:57:08 AM
Algebra is heavily used in programming.

Programming is full of

j=1; j<array.length;j++

type lines, no matter the language.


What does that line have to do with algebra?! That's an extract from an if() loop, 3 individual but related statements.

I've been programming for 20 years and can't remember the last time I needed algebra after A-level maths in school :p (but I don't do any 3D gaming progarmming, which is where I guess you're aiming this at)

20 years of programming and you just stated an "if loop"? Please explain how an "if loop" works.

Yep, cos I really haven't got better things to do than prove myself to you..

edit: having gone away and thought about why you made a point of that I realised my error. Of course I meant condition not loop. My programming is better than my grasp of English, I swear.

Hah, sorry was just giving you a hard time. Although an if loop would be impressive Smiley
3  Economy / Services / Re: [BOUNTY] 200$ for the first to provide purely mathematic expression of XOR on: January 27, 2014, 02:32:56 AM
I am in no way saying the last poster's solution is incorrect, but I do want to say you need to be careful with 0^0. Depending on your software choice (since OP has the strangest of conditions) 0^0 is undefined, much like 0/0 is undefined. True, most programming languages will treat 0^0 = 1, but OP may need to double check this with whatever he is using to compute the XOR function. Can check with https://www.wolframalpha.com that 0^0 is undefined.

But I am sure that won't be a problem, unless OP has extremely picky software.
4  Economy / Services / Re: Programming lessons wanted on: January 27, 2014, 02:10:56 AM
Algebra is heavily used in programming.

Programming is full of

j=1; j<array.length;j++

type lines, no matter the language.


What does that line have to do with algebra?! That's an extract from an if() loop, 3 individual but related statements.

I've been programming for 20 years and can't remember the last time I needed algebra after A-level maths in school :p (but I don't do any 3D gaming progarmming, which is where I guess you're aiming this at)

20 years of programming and you just stated an "if loop"? Please explain how an "if loop" works.

Also, programming is swimming in algebra. Not only are you passing values around in variables and defining functions with them (e.g., b = 3.0; h = 2.0; a = 0.5*b*h;) but you also use 1D and 2D arrays which is basic linear algebra (e.g., v[i*length+j]). Also a "real" if statement is a common place to see algebraic options such as:

if (f(x) % 2 == 0) { //code here }

Not to mention the amount of algebra used in many of the algorithms you take for granted (e.g., sorting, hashing, searching).
5  Economy / Services / Re: Physics Homework Services on: January 11, 2014, 01:33:34 PM
Hah, unfortunately no. I can do math homework and possibly chemistry homework. But no biology Sad

Thus, dissecting moles is definitely outta the question.  Grin

Oooh, that would be fun, dissecting over the internet. I am sure nothing could possibly go wrong there Smiley
6  Economy / Services / Re: Math, Physics, and more... Homework Services on: January 11, 2014, 01:35:51 AM
Classes are gearing back up, best not wait until the last minute to get that A. Start early with my services and relax all semester (hah, assuming you have online or take-home exams).

Already helped one student with a physics project. Hope to help some more.
7  Economy / Services / Re: Math, Physics, and more... Homework Services on: December 18, 2013, 01:33:29 AM
Just added accounting to the list (although this is more self-taught, so might take a bit longer to complete)... Have been successful so far with a person here Smiley
8  Economy / Services / Re: [0.02BTC Bounty]Help installing g++ 4.8.1 on a google compute engine instance on: December 18, 2013, 01:21:53 AM
Thanks!
9  Economy / Services / Re: [0.02BTC Bounty]Help installing g++ 4.8.1 on a google compute engine instance on: December 18, 2013, 12:36:37 AM
Glad to see it works. And hopefully you enjoy the amazing C++11, I certainly enjoy it.

Yep, the BTC address in my signature is my personal donation address. Glad I could be of help Smiley
10  Economy / Services / Re: [0.02BTC Bounty]Help installing g++ 4.8.1 on a google compute engine instance on: December 15, 2013, 04:55:45 AM
I had similar problems compiling my c++11 code on government supercomputers that refused to update the GCC compilers because of the infamous red tape that anyone who works in the government knows all too well. So I had to compile the latest GCC in my local working directory and just set the proper environment variables before compiling my own code.

Good news is that it isn't too difficult, if no one can help you by tomorrow then I can definitely help you out since it is too late in the evening here.

EDIT:
--------------
Actually found some notes I left someone else for compiling GCC locally. Might be of some use...

Quote
You need:

gmp
mpc
mpfr

Just stick those unzipped directories in your gcc-source (in my case it was "gcc-svn", yours might be "gcc-4.8.1") directory.

Then go back a directory and make a directory called "gcc-build".

Go inside gcc-build and type the command below replacing it with your directory structure (note --- prefix will be the directory it installs all the goodies like bin and lib64):

-------------------------------------------------

../gcc-svn/./configure --prefix=/home/nickjer/gcc --with-mpfr-include=/home/nickjer/gcc-build/../gcc-svn/mpfr/src --with-mpfr-lib=/home/nickjer/gcc-build/mpfr/src/.libs --disable-multilib

-------------------------------------------------

Then type "gmake -j <# cpu cores>" and go eat dinner.

Then "gmake install".

I wrote that for gcc-4.7.2, so might need some tweaking. Also, you can remove the --prefix parameter if you want to install it globally. You will need to be root or use sudo for that when you make install it.
11  Economy / Services / Re: Looking for someone to optimize my litecoin minning rig on linux on: December 14, 2013, 04:46:04 AM
I am not volunteering to speed it up, but have you looked at:

https://litecoin.info/Mining_hardware_comparison

and tried the options that those people used. I managed to speed up my cudaMiner using some of the options that other people found for my model graphics card.

Other than that I don't know too much about the driver support for Radeon in linux, as I have an Nvidia card.
12  Economy / Services / Re: Physics Homework Services on: December 14, 2013, 03:56:05 AM
just got some math help, he was great, and fast, will use again!

Thanks! It was fairly interesting material.
13  Economy / Services / Re: Mathematics Homework Services on: December 14, 2013, 02:34:57 AM
You do know applied math is physics right? just like electrical engineering is applied physics

Hah, unfortunately there is no use arguing with the PrimeDice advertisers. Best bet is just to ignore their limitless posts Smiley
14  Economy / Services / Re: Mathematics Homework Services on: December 13, 2013, 06:16:50 PM
That's very creative of you OP! One of a kind idea  Smiley BITCOINS FOR HOMEWORK    aye
You should also mention your hourly rates to get more attention IMO.

Not as creative as you think. Almost a complete rip off of mine Smiley

https://bitcointalk.org/index.php?topic=356743

Check it out.

Your physics, he is math. Clam down.

Haha, I was just correcting someone, but since you chimed in without reading Smiley

I will be kind enough and correct you too since you didn't read either his initial post (he states physics in his post) or my thread carefully enough Smiley

I state math in my thread: https://bitcointalk.org/index.php?topic=356743.msg3826163#msg3826163

But don't worry, this happens with users who try to post as many comments as possible for advertising purposes without taking the time to read what is going on Sad


15  Economy / Services / Re: Giving 25$ to compile my bitcoin-qt executable :) on: December 13, 2013, 04:51:43 AM
Why not use a cross-compiler on linux? That is how I compile Windows code on linux.

Also, what kind of modifications are you talking about. Could be you made a backdoor and want to hand out fake wallets to people on windows Sad

But that could just be my cynicism talking.
16  Economy / Services / Re: Mathematics Homework Services on: December 13, 2013, 04:42:00 AM
That's very creative of you OP! One of a kind idea  Smiley BITCOINS FOR HOMEWORK    aye
You should also mention your hourly rates to get more attention IMO.

Not as creative as you think. Almost a complete rip off of mine Smiley

https://bitcointalk.org/index.php?topic=356743

Check it out.
17  Economy / Lending / Re: Seeking 0.09 btc loan for 1 week on: December 09, 2013, 10:01:29 PM
That doesn't really matter, does it?  I'll show you tradefortress's address, he has even more Tongue  Means nothing.
Also, nobody knows if you actually own that address.

Not unless he actually signs a message with the private key of that address (of course after he actually moves the BTC to another account). Otherwise, yeah one can simply post any old address without any proof that it is actually owned by them.
I don't mean to jack his because frankly it doesn't concern me, but I never did understand the whole signing thing. Hows that work exactly ?

Like, I use all my BTC address with blockchain.info's android app. So lets say I wanted to send someone 0.01 or w/e. How do I sign it and whats the purpose of signing ? I have heard signing addresses can prove you own it but I have to toss a flag on that one because if messages can be signed with provate keys, then all I need is anyones address with the private key and a 0.01 balance, sin a message and go o look, its my address.

Again, my apologies for jacking this thread.

I also didn't understand how a digital signature meant squat until I looked around and found this:

https://self-evident.org/?p=981

It is a very useful page that describes how a digital signature works and can be used for verification. Hope this helps.
18  Economy / Trading Discussion / Re: whats the cheapest and easiest way to get money from PAYPAL to BTC-E on: December 09, 2013, 06:34:25 PM
I wouldn't use Virwox again. Just to test it, I sent Virwox $104 through PayPal. After all the exchanges were said and done, I had $80 in BTC in the end. That is a net 23% in fees. You are better off shopping around on localbitcoins.com, I managed to get $200 worth of bitcoins for 5% more than the current exchange price at localbitcoins.
19  Economy / Services / Re: Physics Homework Services on: December 06, 2013, 06:46:52 AM
I think you are on the wrong side of the binding energy curve with that thorium to be doing any useful fusion Sad

But do let me know how that nobel prize turns out. Might be able to sell it for a few bitcoins Smiley

Hehe, yeah I know, Thorium goes through fission, but in order to start a fusion reaction, you need rediculous amounts of energy to hit the activation energy for reactions to start taking place, I'm talking about using Thorium + pehaps a liquid helium or deuterium catalyst to provide that initial energy to start the "cold" fusion reaction. I've already run the rough calculations for creating the magnetic field that would allow the reaction to run its couse, although I still have to find a location that would accomodate 7000 C temperatures.


This interests me greatly. I would like to help if at all possible. Smiley Unfortunately, I'm still an undergrad and haven't taken any in-depth physics/chemistry courses; but I think if you explained the principles of such a device then I would be able to grasp it fairly quickly. PM me if at all interested Cheesy

I can only assume SaltySpoon is being sarcastic. If not then you can add him to a long list of crackpot physicists on the web. Just google all the people who have solved the greatest mysteries of physics by stringing a multitude of scientific words together into nonsensical sentences... You are better off taking those classes first and working on a research project in an accredited university.
20  Economy / Services / Re: Physics Homework Services on: December 05, 2013, 04:37:23 AM
I think you are on the wrong side of the binding energy curve with that thorium to be doing any useful fusion Sad

But do let me know how that nobel prize turns out. Might be able to sell it for a few bitcoins Smiley
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