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• Using static variables in Android

  - by michael

  Hi, In android, are using static variables a recommended practice? E.g, implementing a Singleton pattern in Java, I usually do: private static A the_instance; public static A getInstance() { if (the_instance == null) { the_instance = new A(); } return the_instance; } Also, when does this get cleaned up by the Android JVM? Thank you.

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• Decorator Module Standard

  - by Kyle Terry

  I was wondering if it's frowned upon to use the decorator module that comes with python. Should I be creating decorators using the original means or is it considered okay practice to use the module?

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• When animating, how fire the callback only when all elements are done?

  - by Maria Söderberg

  When animating in jQuery, what's best practice for firing a callback only when ALL elements are done animating and not for each element? For example: $('.someElements').fadeOut('fast', function() { // dont do this until ALL elements are done fading }

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• [Design Question] When to open a link on a new window?

  - by Ian

  Hi All, When designing a web application/web site, is there an accepted practice on when to open a link on a new window? Currently, if the site being linked to is outside the domain (say Google.com), I am always launching it on a new window. If the page being linked is within the same domain, I open it on the current active window. I've read somewhere the opening links on a new window explicitly is being frowned upon. Thanks!

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• Do most shared hosts handle gzipped files?

  - by Matrym

  I get them theoretically, but I'm grappling with gzipping files in practice. How should I go about gzip compressing my files, and what needs to be done in order to use them on a shared host? Would the following work? RewriteEngine On RewriteBase / RewriteCond %{HTTP:Accept-Encoding} .*gzip.* RewriteRule ^/(.*)\.js$ /$1.js.gz [L] RewriteRule ^/(.*)\.css$ /$1.css.gz [L] AddEncoding x-gzip text.gz

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• How do I create a new AnyType[] array?

  - by cb

  Which is the best practice in this situation? I would like an un-initialized array of the same type and length as the original. public static <AnyType extends Comparable<? super AnyType>> void someFunction(AnyType[] someArray) { AnyType[] anotherArray = (AnyType[]) new Comparable[someArray.length]; ...or... AnyType[] anotherArray = (AnyType[]) new Object[someArray.length]; ...some other code... } Thanks, CB

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• Are django sessisons safe to use for mission critical signup forms?

  - by Gattster

  What is the best practice when designing a mission critical signup form when it comes to using django-powered sessions? Is it generally considered ok to require the user to accept the session cookie? Are there any tips to maximize the percent of users who can accept the session cookie?

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• Accessing Subversion commit data externally

  - by gaoshan88

  I have need to access subversion data (commit messages, files updated, revision numbers, dates modified, author, etc.) externally. Is this something for some sort of subversion hook or is there a decent third party package for this or some other "best practice" way to approach accessing subversion data externally (and by external I mean from a php/ruby or python script... external to subversion itself)?

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• Number of Parameter Passed to Function?

  - by Asim Sajjad

  I want to know how many parameters can be passed to function, I mean what is good programming practice, regarding passing the parameters to function?

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• Is it good to have a member template function inside a non-template class in c++?

  - by tsubasa

  I wonder if it is a good practice to have a member template function inside a non-template class in c++? Why?

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• Equivalent of IllegalArgumentException of Java in C++

  - by vito

  In Java if an input argument to a method is invalid, we can throw an IllegalArgumentException (which is of type RuntimeException). In C++, there is no notion of checked and unchecked exceptions. Is there a similar exception in standard C++ which can be used to indicate a runtime exception? Or is there a common style not in the standard but everyone follows in practice for a situation like this? Or, should I just create my own custom exception and throw it?

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• C++ Function arguments validation (pointer vs. object address arguments)

  - by Andrew

  Hello everyone, What do you consider a better programming practice: passing objects as pointers or references to functions. What do you do for input validation? Thanks.

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• Any way to add my C# project as a reference in IronPython / IronRuby?

  - by Jason

  I know how to reference an existing .dll to IronPython, but is there any way to add my project as a reference like I can between Visual Studio projects? Or is it best practice to create a separate class library?

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• Should I cast variables that use a typdef'd type?

  - by mesorismo

  If I have something like: typedef int MyType; is it good practice to cast the operands of an operation if I do something like this: int x = 5; int y = 6; MyType a = (MyType)(x + y); I know that I don't need to do that but wondering if it's better for intent/documentation/readability concerns.

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• Having duplicate enumerator values

  - by whirlwin

  I'm creating a Tetris clone in C++, and I have an enum GameProperty, which is specified as follows: enum GameProperty { NUM_OF_TETROMINOES = 7, NUM_OF_TILES = 4, TETROMINO_ROTATIONS = 4 }; In my case, I only use these values when looping through a tetromino's tiles, e.g: for (int i = 0; i < TETROMINO_TILES; i++) { } Is it under any circumstance considered bad practice to have multiple enumerators with the same value?

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• Singleton & Multithreading in Java

  - by vivek jagtap

  What is the preferred way to work with Singleton class in multithreaded environment? Suppose if I have 3 thread, and all they try to access getInstance() method of singleton class at the same time - What would happen if no synchronization is maintained? Is it good practice to use synchronized getInstance() method or use synchronized block inside getInstance(). Please advise if there is any other way out.

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• Storing result in a temp variable versus multiple return points

  - by Carl Manaster

  Which is a better practice, generally speaking, and why? Under what circumstances would you change your mind? function foo1(int x) { int result; if (x > 5) { result = 2; } else { result = 7; } return result; } OR function foo2(int x) { if (x > 5) { return 2; } else { return 7; } }

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• PHP echo query result in Class??

  - by Jerry

  Hi all I have a question about PHP Class. I am trying to get the result from Mysql via PHP. I would like to know if the best practice is to display the result inside the Class or store the result and handle it in html. For example, display result inside the Class class Schedule { public $currentWeek; function teamQuery($currentWeek){ $this->currentWeek=$currentWeek; } function getSchedule(){ $connection = mysql_connect(DB_SERVER,DB_USER,DB_PASS); if (!$connection) { die("Database connection failed: " . mysql_error()); } $db_select = mysql_select_db(DB_NAME,$connection); if (!$db_select) { die("Database selection failed: " . mysql_error()); } $scheduleQuery=mysql_query("SELECT guest, home, time, winner, pickEnable FROM $this->currentWeek ORDER BY time", $connection); if (!$scheduleQuery){ die("database has errors: ".mysql_error()); } while($row=mysql_fetch_array($scheduleQuery, MYSQL_NUMS)){ //display the result..ex: echo $row['winner']; } mysql_close($scheduleQuery); //no returns } } Or return the query result as a variable and handle in php class Schedule { public $currentWeek; function teamQuery($currentWeek){ $this->currentWeek=$currentWeek; } function getSchedule(){ $connection = mysql_connect(DB_SERVER,DB_USER,DB_PASS); if (!$connection) { die("Database connection failed: " . mysql_error()); } $db_select = mysql_select_db(DB_NAME,$connection); if (!$db_select) { die("Database selection failed: " . mysql_error()); } $scheduleQuery=mysql_query("SELECT guest, home, time, winner, pickEnable FROM $this->currentWeek ORDER BY time", $connection); if (!$scheduleQuery){ die("database has errors: ".mysql_error()); // create an array } $ret = array(); while($row=mysql_fetch_array($scheduleQuery, MYSQL_NUMS)){ $ret[]=$row; } mysql_close($scheduleQuery); return $ret; // and handle the return value in php } } Two things here: I found that returned variable in php is a little bit complex to play with since it is two dimension array. I am not sure what the best practice is and would like to ask you experts opinions. Every time I create a new method, I have to recreate the $connection variable: see below $connection = mysql_connect(DB_SERVER,DB_USER,DB_PASS); if (!$connection) { die("Database connection failed: " . mysql_error()); } $db_select = mysql_select_db(DB_NAME,$connection); if (!$db_select) { die("Database selection failed: " . mysql_error()); } It seems like redundant to me. Can I only do it once instead of calling it anytime I need a query? I am new to php class. hope you guys can help me. thanks.

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• Is there a method to include CSS background images in print?

  - by jitendra

  Is there a method to include CSS background images in print? If i use image replace techniques for (which is considered as a best practice) Logo then logo doesn't come in print. and many places in site CSS background is saving bandwidth and my time both. but client is asking to include many things in print also. What should i do?

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• Bookmarkable URL in JSF application - Trying to use Spring Webflow and JSF . Any suggestions ?

  - by vsingh

  Our application is JSF , hibernate & Spring. Currently the url is in following format http://www.skill-guru.com/skill/login/testDetails.faces?testId=62&testName=PMP-Certification-practice-test We want a clean url like http://www.skill-guru.com/urltitle?some parameter One of the ways we could do this is through integration with Spring webflow with JSF. Any other suggestions ? We are trying Spring webflow 1.0 with JSF 2.0 but that does not seem to work.

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• In Pylons, how do I perform actions after writing the response?

  - by Chung Wu

  In a pylons controller, I would like to first return the response to the request (so that the user gets a response ASAP), and then perform some additional operations (say, updating view counts, etc.) that didn't need to happen to generate the response. What's the best-practice for doing things like this? Thanks!

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• Re-usable views or xibs for use with UIStoryboard

  - by Leonardo

  I find it very convenient to use storyboards, especially to have (and show) an overview of the application. However, I also find it very annoying to replicate the same code and views without the possibility to keep at least a reusable library of the most common xibs. This is especially true with UITableView and its cell. Did some of you have had any idea or best practice to share for dealing with this issue?

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• opensourcing a website code

  - by pygabriel

  Hi! I'm writing a little website (webapp) in php+codeigniter, I'd really like to make it open source (to attract collaborators and to have a free VCS hosting). Is that a good practice? This mine security? Which are the best tools to change important data before uploading? (like config files with db names and passwords used for testing etc..)

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• login restriction with ldap, but where to store the functional rights/access control list?

  - by jrEwing

  Question is: Best practices when using LDAP authentication like MS ActiveDirectory but having complex access control rights inside each application. Did you put it all in the LDAP or did you link it with information in the application? Looking to build this in asp.net mvc 2 and using membership features, so best practice here i guess is that we roll our own custom provider to acomplish this...

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• Drupal: customizing modules question

  - by Patrick

  hi, I've a question about how to customize drupal modules avoiding hacks. Let's say I've downloaded Lightbox2 module and I want to change the javascript file to display differently my lightbox. At the moment I'm modifying the Lightbox2 module, so I cannot update it anymore, so I know it is not the best practice. I was wondering if I can customize the javascript file of this module with a hook, and how. Thanks

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