Thread Rules
1. This is not a "do my homework for me" thread. If you have specific questions, ask, but don't post an assignment or homework problem and expect an exact solution.
2. No recruiting for your cockamamie projects (you won't replace facebook with 3 dudes you found on the internet and $20)
3. If you can't articulate why a language is bad, don't start slinging shit about it. Just remember that nothing is worse than making CSS IE6 compatible.
4. Use [code] tags to format code blocks.

Manit0u

Poland17242 Posts

August 23 2017 19:30 GMT

#18001

On August 24 2017 03:58 emperorchampion wrote:
Looking to do a bit of GUI programming in python, any recommended frameworks?

Pygame?

Nesserev

Belgium2760 Posts

August 24 2017 04:55 GMT

#18002

--- Nuked ---

emperorchampion

Canada9496 Posts

August 24 2017 08:00 GMT

#18003

On August 24 2017 04:30 Manit0u wrote:

Show nested quote +

Pygame?

Seems like a bit more than I need

On August 24 2017 13:55 Nesserev wrote:
I've always used Tkinter. It's easy and portable (to a certain degree)... though it can be quite shitty if something goes wrong, or you don't know a certain thing or aren't aware of some obscure detail.

Read this: http://effbot.org/tkinterbook/tkinter-index.htm

I hate GUI programming.

Yeah seems like this is the best option. I'm just looking to make a very simple interface for some tools I've developed (will just be boxes, and some fields to enter values). Thanks!

Manit0u

Poland17242 Posts

August 24 2017 14:58 GMT

#18004

Ugh. I have to figure out how to get from your run of the mill RBAC/ABAC to something like (or exactly) XACML (which obviously doesn't have any tried and true ruby gems). FML.

emperorchampion

Canada9496 Posts

August 24 2017 17:06 GMT

#18005

#1 thread on TL

tofucake

Hyrule19029 Posts

August 28 2017 19:55 GMT

#18006

Good news! My new job is super awesome

On the downside I no longer have free time :|

sabas123

Netherlands3122 Posts

August 28 2017 20:41 GMT

#18007

On August 29 2017 04:55 tofucake wrote:
Good news! My new job is super awesome

On the downside I no longer have free time :|

What job do you have now?

TheEmulator

28087 Posts

August 28 2017 20:58 GMT

#18008

On August 29 2017 05:41 sabas123 wrote:

Show nested quote +

What job do you have now?

Male Gigolo.

WarSame

Canada1950 Posts

August 29 2017 02:34 GMT

#18009

Does anyone know how to develop for Android Beam with 0 or 1 devices? It seems impossible to transfer from phone to phone. I figured they had a way to emulate it, but I can't find anything on Google.

Manit0u

Poland17242 Posts

August 29 2017 15:21 GMT

#18010

I have the weirdest error ever that makes my tests fail in the CI pipeline (they work fine locally):


ActiveRecord::StatementInvalid: PG::UndefinedFunction: ERROR:  function array_remove(uuid[], uuid) does not exist
LINE 1: UPDATE api_v1_users SET badge_ids = array_remove(badge_ids::...
                                            ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
QUERY:  UPDATE api_v1_users SET badge_ids = array_remove(badge_ids::uuid[], OLD.id::uuid)
CONTEXT:  PL/pgSQL function api_v1_badges_before_delete_row_tr() line 3 at SQL statement

I've checked it many times and PostgreSQL 9.4 definitely has this function built-in... I've even added explicit typecasts to the trigger but it doesn't seem to help.

Any ideas? I feel like I'm going in circles.

Edit:

Nevermind. The CI pipeline was setting up pgsql 9.4 but starting service for pgsql 9.2 for some reason. Several hours wasted...

bo1b

Australia12814 Posts

August 30 2017 04:31 GMT

#18011

So I've been thinking about a basic algo problem that's probably handed out day one of most courses, namely being find the first x amount of primes.

The obvious solution is to modulo every number from 2 to the square root and if one of them returns a remainder of 0 it's not a prime.

It struck me that maintaining a list of primes should be a lot faster, as then you can modulo the primes up to the square root quite quickly. Have I missed something obvious?

Like say you're trying to get 10 million primes, I'd imagine the search time should be lower and lower comparatively but I could be wrong.

Isualin

Germany1903 Posts

August 30 2017 04:48 GMT

#18012

On August 30 2017 13:31 bo1b wrote:
So I've been thinking about a basic algo problem that's probably handed out day one of most courses, namely being find the first x amount of primes.

The obvious solution is to modulo every number from 2 to the square root and if one of them returns a remainder of 0 it's not a prime.

It struck me that maintaining a list of primes should be a lot faster, as then you can modulo the primes up to the square root quite quickly. Have I missed something obvious?

Like say you're trying to get 10 million primes, I'd imagine the search time should be lower and lower comparatively but I could be wrong.

If you just want to check if a number is prime or not, you should google primality test. But if you want "the first 10000 primes" the method you want to use is Sieve of Eratosthenes There are also other sieve methods like atkins and sundaran but i don't know much about them, eratosthenes is the most famous one

bo1b

Australia12814 Posts

August 30 2017 08:37 GMT

#18013

The first primality test was the same thing as my thought, but the sieve methods are super fascinating thanks for that link.

Manit0u

Poland17242 Posts

August 30 2017 12:57 GMT

#18014

Thankfully, modern languages like Ruby have infinite generators and you can do stuff like that:


Prime.first 5
# => [2, 3, 5, 7, 11]

https://ruby-doc.org/stdlib-2.3.0/libdoc/prime/rdoc/Prime.html

It has some interesting concepts already included:
EratosthenesGenerator
TrialDivisionGenerator
Generator23

Good thing about Ruby is that you can browse all source code for their classes (in C).

sc-darkness

856 Posts

August 30 2017 20:47 GMT

#18015

Has anyone tried to get H1B visa for US? Would you recommend any job board websites? I've visited indeed.com, but there has to be more.

TheEmulator

28087 Posts

August 30 2017 20:50 GMT

#18016

It's apparently a really annoying process so good luck. Think you need an employer to sponsor you?

sabas123

Netherlands3122 Posts

August 30 2017 21:12 GMT

#18017

AFAIK H1Bs are sponsored.

You can always check/post this on /r/cscareerquestions for more help,

tofucake

Hyrule19029 Posts

August 30 2017 21:24 GMT

#18018

On August 29 2017 05:41 sabas123 wrote:

Show nested quote +

What job do you have now?

Senior Dev at a Drupal agency. I was hired based on my technical knowledge of Symfony (what Drupal 8 is built on), PHP (what all the projects here are built on), DevOps, and generally being awesome.

The main problem is that when I started I knew exactly 3 things about Drupal:
1. It's called Drupal
2. It's written in PHP
3. It's a pretty popular CMS

So I've had to learn not only the basics of how to use Drupal, but also how to tear it apart and fix problems. I find the work fun, but it can get a little stressful having a looming deadline, a problem to solve, and literally no idea what the cause is. In fact, in my latest project I accidentally created a scripting language. Plus since I'm a senior I am also one of the people the other devs go to when they can't figure something out. And so far all of my projects have been Drupal 7, which is old school procedural code not built on an OOP framework, so my Symfony knowledge has been of limited use so far.

At least they are paying pretty well.

sc-darkness

856 Posts

August 30 2017 23:09 GMT

#18019

On August 31 2017 05:50 TheEmulator wrote:
It's apparently a really annoying process so good luck. Think you need an employer to sponsor you?

I think so. Thanks.

On August 31 2017 06:12 sabas123 wrote:
AFAIK H1Bs are sponsored.

You can always check/post this on /r/cscareerquestions for more help,

Thanks. It looks interesting.

Has anyone here got H-1B successfully? If yes, any experience they'd like to share?

Edit: Have you got challenges from HackerRank and similar from employer? I had to do 4 exercises in 90 minutes and they were about algorithms... not enough time to think and implement properly.