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• Motivation Problems, Middle School Programmer [closed]

  - by Anonymous

  I'm in middle school at the moment and have been programming for about a year and a half. I mostly work with Python and Ruby, and am currently learning Rails. I know, you can never learn enough, it takes a looong time to master a subject, but I feel like I don't have much left to learn :(. I've learned many concepts in Python, learned basically the whole std lib and have written a ton of programs, same with Ruby. In Ruby I've also done a lot of metaprogramming. After I've learned all the concepts, and written a lot of programs, there is nothing really left for me to do! What can I do, now that I've learned all the concepts, and written some programs? I can't get a job working with real developers, and the programming camp I went to last year was far too easy.

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• How to examine the speed of your code results?

  - by Goma

  Hi. Whatever was your choice PHP, ASP.NET, Ruby On Rails or even JSP. You know that you can develop a website to give a specific result or to do some tasks in many ways. I mean you can change your code to make it shorter (or for any other reason) but to give the same result. In this case how do you test which code was faster to excute so you choose it to make your website faster? I mean do you have any tools or ideas in how to test the time of execution for your code and compare it with time of execution after you do some edit?

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• is this a correct way to generate rsa keys?

  - by calccrypto

  is this code going to give me correct values for RSA keys (assuming that the other functions are correct)? im having trouble getting my program to decrypt properly, as in certain blocks are not decrypting properly this is in python: import random def keygen(bits): p = q = 3 while p == q: p = random.randint(2**(bits/2-2),2**(bits/2)) q = random.randint(2**(bits/2-2),2**(bits/2)) p += not(p&1) # changes the values from q += not(q&1) # even to odd while MillerRabin(p) == False: # checks for primality p -= 2 while MillerRabin(q) == False: q -= 2 n = p * q tot = (p-1) * (q-1) e = tot while gcd(tot,e) != 1: e = random.randint(3,tot-1) d = getd(tot,e) # gets the multiplicative inverse while d<0: # i can probably replace this with mod d = d + tot return e,d,n one set of keys generated: e = 3daf16a37799d3b2c951c9baab30ad2d d = 16873c0dd2825b2e8e6c2c68da3a5e25 n = dc2a732d64b83816a99448a2c2077ced

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• How relevant is PHP today for browser games?

  - by Bitgarden

  I was the lead developer of 2 moderately successful browser games quite a few years back, and plan on working on a new game soon. At the time, I wrote them in pure PHP (no template engine or anything of the sort). I'd like to start working on a new game, but have been out of the web development world for a while. Reading around, I hear a lot of good about Rails, Django, Node.js, etc., with which I have no experience (although I know my way around Python, Javascript, and the others quite well). So my question is the following- if I were to go in my old ways and go with PHP again, would I be making things hard for myself? Would picking something more "trendy" have a real impact on my development? In addition, does anyone have any pointers relating to specifically developing browser games with these more modern tools?

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• Is having your own website important?

  - by Josh K

  How necessary or important is it? I try to keep a running list of blogs or sites to follow, but a lot of the time I pull up someone's profile and notice there isn't anything there. Is it really important? I understand are different levels of programming (from C/C++ system programmers to Rails and even Haskell and J) and not everyone works in a language easily worked with for web based applications. Not everything is web-centric, however with the advent of many popular and sometimes free services I don't think it's unreasonable to expect a majority of programmers to have a personal site.

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• How to accomplish "AuthType None" in Apache 2.2

  - by Technorati

  http://httpd.apache.org/docs/trunk/mod/mod_authn_core.html#authtype talks about "AuthType None", and has an awesome example of exactly what I need to do - unfortunately, it appears to be new to 2.3/2.4. Is there any equivalent feature in 2.2? The authentication type None disables authentication. When authentication is enabled, it is normally inherited by each subsequent configuration section, unless a different authentication type is specified. If no authentication is desired for a subsection of an authenticated section, the authentication type None may be used; in the following example, clients may access the /www/docs/public directory without authenticating: <Directory /www/docs> AuthType Basic AuthName Documents AuthBasicProvider file AuthUserFile /usr/local/apache/passwd/passwords Require valid-user </Directory> <Directory /www/docs/public> AuthType None Require all granted </Directory>

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• Drop in service for account management, authentication, identity?

  - by Mike Repass

  I'm building an Android app and associated set of web services for uploading/downloading data. I need a basic (no frills) solution for account management (register, login, logout, verify credentials/token). What open source / third party solutions exist for this scenario? I need: create a new account db based on a salt simple web service to create a new account simple web service to authenticate supplied credentials and return some sort of token That's it, I can get by without 'fancy' email activation or password reset for the time being. Are there off-the-shelf components for this? Should I just use a 'blank' django or rails app to get this done? Seems crazy for everyone to be doing CREATE TABLE user_accounts ... Thoughts? Thank you.

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• What to choose for beginner: PHP/Python/Ruby

  - by Nai

  I'm a beginner teaching myself to code but I would like he insight of the PSE community and helping choose where to start. My main objective is to be able to create a basic website to first test my business idea and from there iterate on it quickly to minimise my learning time. The most important criteria for me is speed. An example of speed would be pre-built components available open source and not having to write one from scratch. From my research, this seems to be a death match between the following languages and frameworks: PHP and CakePHP Python and Django Ruby and Rails Assumptions: I am going to be equally good (or bad) in all 3. It is going to be equally easy to find competent developers in either language. I know this to be false already by lets assume that it is. This question is not meant to karma whore as I've seen how passionate some of these standoff questions have been and I'll be happy to turn it into a community wiki.

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• Making Image On Top?

  - by iMayne

  How do I make an image appear on the top of a page and not showing up in the listing post of my upcoming website: www.xternalit.co.uk? Example: when i type: abcdefg then "more option" then below "more option", id have an image. When the user click on "read more" they will see "abcdefg the an image. I dont want that. I want when they click on "read more" they would see the image first and then "abcdefg". Is this possible with a plugin or tweaking of my template? Cheers! PS: can a mod change the tag from php to wordpress? wont work 4 me.

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• Best options for freelance or part-time programming? [closed]

  - by Andrew

  I apologize in advance if this is an inappropriate question for this SE. A few years back I was all set to study computer science and get a job programming, but went a totally different route and went into healthcare. I currently work as a paramedic on a rotating 24/48 schedule, so I have two days off for every day I work, and a decent bit of downtime on the days that I do work. I've been looking at ways to earn some extra money with all that spare time, and was wondering if it'd be worth the effort to try and find a part-time/freelance gig. I know HTML/CSS, PHP, and I'm pretty familiar with Python and Ruby (and Rails). Anyways, was hoping that someone could point me in the right direction as what "skill set" would give me the best chance to be able to land a part-time/freelance gig. I realize this is a rather open-ended question but any direction is appreciated.

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• How can I selectively override a django .count() method

  - by Tom Viner

  I'm using postGresSQL and my main table has about 20,000 rows. Sometimes count() methods can take ages or even timeout. Mod.manager.filter(...).count() I need to selectively override the count() method depending on what filter has been applied. Just having a cache of results would be a great gain but I'd like to be able to say: if filter query is just {'enabled'=True} then return 20,000 without touching the db. Note: I can't prevent the call to .count() as it's inside django's pagination, which always does a count.

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• HOw to Extract image pixels and perform computation on it

  - by gavishna

  What i want to do is extract the pixels into array A(i,j).Let A(i,j) represent the pixel in the ith row & jth colm of the image. Let B(i,j) be the transformed array containing bits such that B(i,j) = 1 if (A(i,j)/2^t) mod 2 =1, where t=0,1,2,3,4,5,6,7 = 0 otherwise Then the array B(i,j) will be mutliplied by another array say C(i,j) representing another image. Then i want to plot the result of B*C as an image. How do i take in the pixels for the above conditions for both gray and RGB color format.Also how do i solve the above problem.Any helo will be usefull because i am not an expert in image processing.

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• Error(2,7): PLS-00428: an INTO clause is expected in this SELECT statement

  - by omgzor

  I'm trying to create this trigger and getting the following compiler errors: create or replace TRIGGER RESTAR_PLAZAS AFTER INSERT ON PLAN_VUELO BEGIN SELECT F.NRO_VUELO, M.CAPACIDAD, M.CAPACIDAD - COALESCE(( SELECT count(*) FROM PLAN_VUELO P WHERE P.NRO_VUELO = F.NRO_VUELO ), 0) as PLAZAS_DISPONIBLES FROM VUELO F INNER JOIN MODELO M ON M.ID = F.CODIGO_AVION; END RESTAR_PLAZAS; Error(2,7): PL/SQL: SQL Statement ignored Error(8,5): PL/SQL: ORA-00933: SQL command not properly ended Error(8,27): PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following: begin case declare end exception exit for goto if loop mod null pragma raise return select update while with <an identifier> <a double-quoted delimited-identifier> <a bind variable> << close current delete fetch lock insert open rollback savepoint set sql execute commit forall merge pipe Error(2,1): PLS-00428: an INTO clause is expected in this SELECT statement What's wrong with this trigger?

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• take my Java skills to the next level

  - by waingram

  I am well versed in the basics of Java programming, although through most of my career I have been maintaining, upgrading, and debugging someone else's Java code. I am mainly familiar with basic servlet applications. I have a strong beginner knowledge of Maven and Ant. I have more web development with Ruby on Rails, but would like to bring my Java skills up to par with regard to web development. It seems the world of Java is so big, I have no idea what the next logical step is for me. Spring? JAX-RB? EJBs? What is the next logical step for someone like me and how would you recommend I approach it?

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• Data architecture for event log metrics?

  - by elliot42

  My service has a large ongoing number of user events, and we would like to do things like "count occurrence of event type T since date D." We are trying to make two basic decisions: What to store? Storing every event vs. only storing aggregates (Event log style) log every event and count them later, vs. (Time-series style) store a single aggregated "count of event E for date D" for every day Where to store the data In a relational database (particularly MySQL) In a non-relational (NoSQL) database In flat log files (collected centrally over the network via syslog-ng) What is standard practice / where can I read more about comparing the different types of systems? Additional details: The total event stream is large, potentially hundreds of thousands of entries per day But our current need is only to count certain types of events within it We don't necessarily need real-time access to the raw data or aggregation results IMHO, "log all events to files, crawl them at a later time to filter and aggregate the stream" is a pretty standard UNIX Way, but my Rails-y compatriots seem to think that nothing is real unless it's in MySQL.

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• Java application failing on special characters.

  - by Scottm

  An application I am working on reads information from files to populate a database. Some of the characters in the files are non-English, for example accented French characters. The application is working fine in Windows but on our Solaris machine it is failing to recognise the special characters and is throwing an exception. For example when it encounters the accented e in "Gérer" it says :- Encountered: "\u0161" (353), after : "\'G\u00c3\u00a9rer les mod\u00c3" (an exception which is thrown from our application) I suspect that in order to stop this from happening I need to change the file.encoding property of the JVM. I tried to do this via System.setProperty() but it has not stopped the error from occurring. Are there any suggestions for what I could do? I was thinking about setting the basic locale of the solaris platform in /etc/default/init to be UTF-8. Does anyone think this might help? Any thoughts are much appreciated.

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• jquery: show data after change event

  - by klox

  i have this code: <script> $("#mod").change(function() { var matches=str.match(/(EE|[EJU]).*(D)/i); $.ajax({ type="post", url="process.php", data="matches", cache=false, async=false, success= function(res){ $('#rslt').replaceWith("<div id='value'><h6>Tuner range is" + res + " .</h6></div>"); return this; } }); return false; }); </script> i want this code can show the result normally..where is my fault?

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• Fast, Vectorizable method of taking floating point number modulus of special primes?

  - by caffiend

  Is there a fast method for taking the modulus of a floating point number? With integers, there are tricks for Mersenne primes, so that its possible to calculate y = x MOD 2^31 without needing division. Can any similar tricks be applied for floating point numbers? Preferably, in a way that can be converted into vector/SIMD operations, or moved into GPGPU code. The primes I'm interested in would be 2^7 and 2^31, although if there are more efficient ones for floating point numbers, those would be welcome.

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• RSpec + Selenium tests for .NET on Windows

  - by John

  I'm a Rails developer doing TDD on a Mac with RSpec, Capybara and Selenium webdriver. Now I have been asked by my company to use this approach for a .NET on Windows environment. What is the best way of doing this? I could just install Ruby and use RSPEC, Capybara and Selenium webdriver for integration testing. But what about unit tests? I also looked at NSpec, but I'm not sure if I can combine that with Capybara or Selenium for integration tests. What would be a good approach here?

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• Does using a PHP framework count as experience using PHP to a company that doesn't use that framework?

  - by sq1020

  I've started working at a company that uses the Yii PHP framework. I'm mostly using Yii but also some frontend stuff like jQuery and Ajax. What I'm worried about is limiting my skill set to a framework that isn't very popular. I mean, if the company I worked for was using Ruby on Rails or even Django, I wouldn't have this feeling of concern for the future. My first question is then, in regards to being able to find a job in the future somewhere else, is my feeling of concern warranted? Secondly, I see a lot of PHP jobs out there but do you think experience using a PHP framework counts as valuable experience to a company that doesn't use that particular framework or any framework at all?

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• What Part of Your Project Should be in Source Code Control?

  - by muffinista

  A fellow developer has started work on a new Drupal project, and the sysadmin has suggested that they should only put the sites/default subdirectory in source control, because it "will make updates easily scriptable." Setting aside that somewhat dubious claim, it raises another question -- what files should be under source control? And is there a situation where some large chunk of files should be excluded? My opinion is that the entire tree for the project should be under control, and this would be true for a Drupal project, rails, or anything else. This seems like a no-brainer -- you clearly need versioning for your framework as much as you do for any custom code you write. That said, I would love to get other opinions on this. Are there any arguments for not having everything under control? Is this sysadmin a BOFH?

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• Do they ask too much on this job?

  - by user58404

  I am looking for web developer job and this job description caught my eyes. I am not sure how much they offer but I was wondering if anyone here meets all of their requirements? To me, that's a lot of knowledge. 2 to 4+ years experience building web sites and applications in a professional environment Strong working knowledge of HTML5 and CSS3 Strong working knowledge of JavaScript, jQuery, AJAX Working knowledge of Ruby on Rails or similar MVC framework Working knowledge of ExpressionEngine, Wordpress or similar CMS Experience administering a LAMP-based server Experience with cross-platform and cross-browser website testing Comfortable working with version control (preferably Git) Proficient with Adobe Photoshop, Illustrator, and Fireworks Comfortable working on a Mac Self-starter with excellent time-management skills with the ability to meet challenging deadlines Ability to work independently with minimal supervision Desire to work on a small team Bonus Skills: Experience deploying to Heroku or similar PaaS provider. Experience developing Facebook applications A strong sense of design Cool open source projects (send us your Github account!) Advanced working knowledge of server administration and website deployment. Java and/or .NET experience

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• Should I be using a game engine?

  - by Kyle

  I'm an experienced programmer, but I'm completely new to making games. I'm thinking of making an iPhone game that is similar to a 2d tower defense type game. In the web programming world, it would be a big waste of time to make a website without using some sort of web framework (eg ruby on rails). Is that the same for making games? Do people mostly use some sort of framework/game engine for making a game? If so, what are the popular ones for iOS?

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• If I am developing a hosted payments page, what should the infrastructure look like?

  - by marcamillion

  If I am not storing credit card info, do I have to be concerned with PCI-compliance? I will be using a payment processor with a bank in my country. Literally just taking the credit card info and passing it to the gateway and processor. I would love to get an idea of the various technologies I might need to consider from an software architectural point of view. What are the best practices in terms of accepting credit cards and reducing fraud risk on my end? I will be creating the app in Rails.

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• how to get accepted at a big company like google [on hold]

  - by prof

  I'm 18 Years old; I started teaching myself programming when I was twelve. I've developed many projects in PHP, Javascript, Ruby, Ruby on Rails. I know a very little about C, C++, Objective C and extending PHP with extensions created in C Programming Language. Now I'm working as a freelance Web Developer with a very low salary :(, My Dream is to get a good career with very high salary so I thought of Big Companies like Google Or Microsoft. My Question is How to get Accepted on those big Companies ? What Pre-requests they want And do you need to finish collage education ?

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