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  • Tab Sweep: Dynamic JSF Forms, GlassFish on VPS, Upgrading to 3.1.2, Automated Deployment Script, ...

    - by arungupta
    Recent Tips and News on Java, Java EE 6, GlassFish & more : • Dynamic forms, JSF world was long waiting for (Oleg Varaksin) • Creating a Deployment Pipeline with Jenkins, Nexus, Ant and Glassfish (Rob Terp) • Installing Java EE 6 SDK with Glassfish included on a VPS without GUI (jvm host) • GlassFish multimode Command for Batch Processing (javahowto) • Servlet Configuration in Servlet 3.0 api (Nikos Lianeris) • Creating a Simple Java Message Service (JMS) Producer with NetBeans and GlassFish (Oracle Learning Library) • GlassFish 3.1 to JBoss AS 7.1.1 EJB Invocation (java howto) • Tests In Java Ee For Zero-error Applications (Dylan Rodriguez) • Upgrading GlassFish 3.1.1 to 3.1.2 on Oracle Linux 6.2 64-bit (Matthias Hoys) • Migrating an Automated Deployment Script from Glassfish v2 to Glassfish v3 (Rob Terp) • Installer updates, Glassfish, Confluence and more…! (Rimu Hosting)

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  • Simultaneously execute two queries on a shell script

    - by Alex
    I have a shell script in which I have to execute two queries (on different databases), spool their results to text files and finally call a c++ program that processes the information on those text files. Something like this: sqlplus user1/pw1@database1 @query1.sql sqlplus user2/pw2@database2 @query2.sql ./process_db_output Both queries take some time to execute. One of them can take up to 10 minutes, while the other one is usually faster. What I want to do is execute them simultaneously and when both are done, call the processing utility. Any suggestion on how to do so?

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  • AllSparkCube Packs 4,096 LEDs into a Giant Computer Controlled Display

    - by Jason Fitzpatrick
    LED matrix cubes are nothing new, but this 16x16x16 monster towers over the tiny 4x4x4 desktop variety. Check out the video to see it in action. Sound warning: the music starts off very loud and bass-filled; we’d recommend turning down the speakers if you’re watching from your cube. So what compels someone to build a giant LED cube driven by over a dozen Arduino shields? If you’re the employees at Adaptive Computing, you do it to dazzles crowds and show off your organizational skills: Every time I talk about the All Spark Cube people ask “so what does it do?” The features of the All Spark are the reason it was built and sponsored by Adaptive Computing. The Cube was built to catch peoples’ attention and to demonstrate how Adaptive can take a chaotic mess and inject order, structure and efficiency. We wrote several examples of how the All Spark Cube can demonstrate the effectiveness of a complex data center. If you’re interested in building a monster of your own, hit up the link below for more information, schematics, and videos. How Hackers Can Disguise Malicious Programs With Fake File Extensions Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer

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  • Tree position terminology/naming

    - by wst
    This is a naming things question. I am processing trees (XML documents), and there are often special rules applied to nodes based on structure. It's been very difficult coming up with concise naming conventions for some cases, namely for nodes in the first position among their siblings, along with some recursive relationship: Given an arbitrary node, I want to describe its first child, and then that node's first child, and so on recursively. Given another arbitrary node, I want to describe its parent if the parent is first among its siblings, and that parent's parent if it's first, and so on recursively. Is there existing terminology to describe these tree positions? How would you name a variable or function that captures one of these cases so that it's intuitive to an unfamiliar developer trying to understand an algorithm?

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  • Grid based collision - How many cells?

    - by Fibericon
    The game I'm creating is a bullet hell game, so there can be quite a few objects on the screen at any given time. It probably maxes out at about 40 enemies and 200 or so bullets. That being said, I'm splitting up the playing field into a grid for my collision checking. Right now, it's only 8 cells. How many would be optimal? I'm worried that if I use too many, I'll be wasting CPU power. My main concern is processing power, to make the game run smoothly. RAM is not a big concern for me.

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  • if ('constant' == $variable) vs. if ($variable == 'constant')

    - by Tom Auger
    Lately, I've been working a lot in PHP and specifically within the WordPress framework. I'm noticing a lot of code in the form of: if ( 1 == $options['postlink'] ) Where I would have expected to see: if ( $options['postlink'] == 1 ) Is this a convention found in certain languages / frameworks? Is there any reason the former approach is preferable to the latter (from a processing perspective, or a parsing perspective or even a human perspective?) Or is it merely a matter of taste? I have always thought it better when performing a test, that the variable item being tested against some constant is on the left. It seems to map better to the way we would ask the question in natural language: "if the cake is chocolate" rather than "if chocolate is the cake".

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  • Right-Time Retail Part 2

    - by David Dorf
    This is part two of the three-part series. Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Right-Time Integration Of course these real-time enabling technologies are only as good as the systems that utilize them, and it only takes one bottleneck to slow everyone else down. What good is an immediate stock-out notification if the supply chain can’t react until tomorrow? Since being formed in 2006, Oracle Retail has been not only adding more integrations between systems, but also modernizing integrations for appropriate speed. Notice I tossed in the word “appropriate.” Not everything needs to be real-time – again, we’re talking about Right-Time Retail. The speed of data capture, analysis, and execution must be synchronized or you’re wasting effort. Unfortunately, there isn’t an enterprise-wide dial that you can crank-up for your estate. You’ll need to improve things piecemeal, with people and processes as limiting factors while choosing the appropriate types of integrations. There are three integration styles we see in the retail industry. First is batch. I know, the word “batch” just sounds slow, but this pattern is less about velocity and more about volume. When there are large amounts of data to be moved, you’ll want to use batch processes. Our technology of choice here is Oracle Data Integrator (ODI), which provides a fast version of Extract-Transform-Load (ETL). Instead of the three-step process, the load and transform steps are combined to save time. ODI is a key technology for moving data into Retail Analytics where we can apply science. Performing analytics on each sale as it occurs doesn’t make any sense, so we batch up a statistically significant amount and submit all at once. The second style is fire-and-forget. For some types of data, we want the data to arrive ASAP but immediacy is not necessary. Speed is less important than guaranteed delivery, so we use message-oriented middleware available in both Weblogic and the Oracle database. For example, Point-of-Service transactions are queued for delivery to Central Office at corporate. If the network is offline, those transactions remain in the queue and will be delivered when the network returns. Transactions cannot be lost and they must be delivered in order. (Ever tried processing a return before the sale?) To enhance the standard queues, we offer the Retail Integration Bus (RIB) to help the management and monitoring of fire-and-forget messaging in the enterprise. The third style is request-response and is most commonly implemented as Web services. This is a synchronous message where the sender waits for a response. In this situation, the volume of data is small, guaranteed delivery is not necessary, but speed is very important. Examples include the website checking inventory, a price lookup, or processing a credit card authorization. The Oracle Service Bus (OSB) typically handles the routing of such messages, and we’ve enhanced its abilities with the Retail Service Backbone (RSB). To better understand these integration patterns and where they apply within the retail enterprise, we’re providing the Retail Reference Library (RRL) at no charge to Oracle Retail customers. The library is composed of a large number of industry business processes, including those necessary to support Commerce Anywhere, as well as detailed architectural diagrams. These diagrams allow implementers to understand the systems involved in integrations and the specific data payloads. Furthermore, with our upcoming release we’ll be providing a new tool called the Retail Integration Console (RIC) that allows IT to monitor and manage integrations from a single point. Using RIC, retailers can quickly discern where integration activity is occurring, volume statistics, average response times, and errors. The dashboards provide the ability to dive down into the architecture documentation to gather information all the way down to the specific payload. Retailers that want real-time integrations will also need real-time monitoring of those integrations to ensure service-level agreements are maintained. Part 3 looks at marketing.

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  • What criteria would I use SQL Stream Insight vs TPL Dataflow [closed]

    - by makerofthings7
    There is an add-in to the Task Parallel Library (TPL) called TPL Dataflow that allows a variety of data processing scenarios. It seems that there are some parallels to the SQL Stream Insight product, however since SQL's Stream Insight has some interesting licensing around it, and it has a better performance depending on what license I get... I found myself asking myself should I use TPL Dataflow and not have any licensing issues, and possibly better performance. Can anyone tell me if performance is a valid criteria for comparing SQL Stream Insight vs TPL Dataflow? What other criteria should I be looking at when comparing the two?

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  • Question about a simple design problem

    - by Uri
    At work I stumbled uppon a method. It made a query, and returned a String based on the result of the query, such as de ID of a customer. If the query didn't return a single customer, it'd return a null. Otherwise, it'd return a String with the ID's of them. It looked like this: String error = getOwners(); if (error != null) { throw new Exception("Can't delete, the flat is owned by: " + error); } ... Ignoring the fact that getCustomers() returns a null when it should instead return an empty String, two things are happening here. It checks if the flat is owned by someone, and then returns them. I think a more readable logic would be to do this: if (isOwned) { throw new Exception("Can't delete, the flat is owned by: " + getOwners()); } ... The problem is that the first way does with one query what I do with two queries to the database. What would be a good solution involving good design and efficiency for this?

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  • R Statistical Analytics with Faster Performance for Enterprise Database Access and Big Data

    - by Mike.Hallett(at)Oracle-BI&EPM
    Further demonstrating commitment to the open source community, Oracle has just released enhanced support of the R statistical programming language for Oracle Solaris and AIX in addition to Linux and Windows, connectivity to Oracle TimesTen In-Memory Database in addition to Oracle Database, and integration of hardware-specific Math libraries for faster performance.  Oracle’s Open Source distribution of R is available with the Oracle Big Data Appliance and available for download now. Oracle also offers Oracle R Enterprise, a component of Oracle Advanced Analytics that enables R processing on Oracle Database servers.   This all goes to make big data analytics more accessible in the enterprise and improving data scientist productivity with faster performance Since its introduction in 1995, R has attracted more than two million users and is widely used today for developing statistical applications that analyze big data. Analyst Report: Oracle Advances its Advanced Analytics Strategy  

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  • Oracle Enterprise Taxation and Policy Management Self Service v1.0 is Now Available

    - by user722699
    New tax product - Oracle Enterprise Taxation Policy Management Self Service is now available. The solution provides tax and revenue authorities with a single citizen portal – powered by Oracle Policy Automation for Public Sector, Oracle WebCenter, Oracle Application Development Framework and Oracle SOA Suite – that can integrate across multiple tax types and tax processing systems. Oracle Enterprise Taxation and Policy Management Self Service enables tax and revenue authorities to quickly provide more taxpayer services online – such as the ability to make payments, contact the tax agency with questions and requests or receive self-guided automated assistance with policies and tax law.  Tax and revenue authorities can implement Oracle Enterprise Taxation and Policy Management Self Service – an out-of-the-box solution – quickly and easily, and lower the cost of taxpayer service operations by promoting a broader set of taxpayer self service features.  Resources: ·         Datasheet: http://www.oracle.com/us/industries/public-sector/ent-taxation-policy-service-ds-1873518.pdf ·         Documentation: http://docs.oracle.com/cd/E38189_01/index.htm ·    

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  • Gigaom Article on Oracle, Freescale, and the push for Java on Internet of Things (IoT)

    - by hinkmond
    Here's an interesting article that came out during JavaOne which talks about the Oracle and Freescale partnership, where we are putting Java technology onto the Freescale i.MX6 based "one box" gateway. See: Oracle and Prosyst team up Here's a quote: When it comes to connected devices, there’s still plenty of debate over the right operating system, the correct protocols for sending data and even the basics of where processing will take place — on premise or in the cloud. This might seem esoteric, but if you’re waiting for your phone to unlock your front door, that round trip to the cloud or a fat OS isn’t going to win accolades if you’re waiting in the rain. With all of this in mind, Oracle and Freescale have teamed up to offer an appliance and a Java-based software stack for the internet of things. The first version of the "one box" will work in the connected smart home, but soon after that, Oracle and Freescale will develop later boxes for other industries ranging from healthcare, smart grid to manufacturing. Hinkmond

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  • Whether to separate out methods or not

    - by Skippy
    I am new to java and want to learn best coding practices and understand why one method is better than another, in terms of efficiency and as the coding becomes more complicated. This is just an example, but I can take the principles from here to apply elsewhere. I have need an option to display stuff, and have put the method stuff separately from the method to ask if the user wants to display the stuff, as stuff has a lot of lines of code. For readability I have done this: public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { stuff (); } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } private static String stuff () { //to lots of things here return stuff (); } Or public static void displayStuff () { String input = getInput ("Display stuff? Y/N \n"); if (input..equalsIgnoreCase ("Y")) { //to lots of things here stuff; } else if (input.equalsIgnoreCase ("N")) { //quit program } else { //throw error System.out.print("Error! Enter Y or N: \n"); } } Is it better to keep them together and why? Also, should the second method be private or public, if I am asking for data within the class? I am not sure if this is on topic for here. please advise.

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  • How to get audio spectrum analysis?

    - by Mrwolfy
    I need to find or create a tool that analyzes the audio spectrum of a sound file (like a .wav or .mp3). I need to output the "volume" or power of x number of frequency bands and output the data as text. This will be used to produce a visualization, a graphic equalizer like you'd see on a stereo. I am currently looking at python to do it. My question is are there some tools out there that would do this (signal processing), like math works or others? I don't have any experience with them so any advice would be appreciated.

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  • RTOS experience

    - by Subbu
    Hi, I have been working as an embedded software engineer on mostly 8 bit micro-controller firmware and desktop/mobile applications development for the past five years. My work on a WinCE project (in which I got introduced to .NET CF) was short lived. I did use core APIs for interrupt processing, peripheral communication, etc...but again, not exactly a pure RTOS environment. In order to get together more solid experience for growing more in the embedded field, I want to work more with RTOSes. Will buying an evaluation board with an RTOS and putting together a project at home be regarded as a good experience or will an online course be more useful? I am just not clear as to what will be regarded as good experience. Any suggestions or directions will greatly help me. I have a passion for the field but just a need a point in the right direction. Thanks for any help in advance. Regards, Subbu

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  • What are some good, simple examples for queues?

    - by Michael Ekstrand
    I'm teaching CS2 (Java and data structures), and am having some difficulty coming up with good examples to use when teaching queues. The two major applications I use them for are multithreaded message passing (but MT programming is out of scope for the course), and BFS-style algorithms (and I won't be covering graphs until later in the term). I also want to avoid contrived examples. Most things that I think of, if I were actually going to solve them in a single-threaded fashion I would just use a list rather than a queue. I tend to only use queues when processing and discovery are interleaved (e.g. search), or in other special cases like length-limited buffers (e.g. maintaining last N items). To the extent practical, I am trying to teach my students good ways to actually do things in real programs, not just toys to show off a feature. Any suggestions of good, simple algorithms or applications of queues that I can use as examples but that require a minimum of other prior knowledge?

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  • If you develop on multiple operating systems, is it better to have multiple computers + displays?

    - by dan
    I develop for iOS and Linux. My preferred OS is Ubuntu. Now my software shop (me and a partner) is developing for Windows too. Now the question is, is it more efficient to have multiple workstations, one for each target OS? Efficiency and productivity is a higher priority than saving money. I have a 3.4Ghz i7 desktop workstation running Ubuntu and virtualized Windows with two displays, and I'm putting together an even more powerful i7 Hackintosh with 16GB RAM (to replace my weak 2.2Ghz i5 Macbook Pro). My specific dilemma is whether I should sell the first computer and triple boot on the second one, or buy two more displays and run both desktop systems simultaneously. Would appreciate answers from developers who write software for multiple OSes. Running guest OSes in VirtualBox on one system not ideal, because in my experience performance is seriously degraded under virtualization. So the choice is between dual/triple booting on one system vs having two systems, one for OSX+iOS/Windows (dual boot) and the other for Ubuntu (which I prefer to use as my main OS). For much of our work, I write a server-side application in Linux and a client for iOS (or for Windows or OS X) simultaneously.

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  • Free Webinar: Filling the Gap in SharePoint Records Management

    - by CatherineRussell
    Webinar: Filling the Gap in SharePoint Records Management Find out how you can solve your challenges with conceptClassifier for SharePoint and leverage SharePoint 2007 and 2010 in this free one hour webinar. This informative webinar will focus on records management in SharePoint and how Concept Searching’s award winning conceptClassifier for SharePoint automatically generates conceptual and descriptor metadata from documents, automatically changes the Content Type, and automatically declares records. Juan J. Celaya, President and CEO of COMPU-DATA International, LLC will share his expertise and experience using the U.S. Army’s Joint Services Records Research Center (JSRRC) as a case study and illustrates how they solved the challenge of processing millions of records to support veteran’s claims using conceptClassifier.    Webinar is on June 23rd from 11:30am – 12:30pm EST and explore real world examples of how to simplify your Records Management processes in SharePoint: http://www.clicktoattend.com/?id=149003

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  • The Column Prediction_Status, MDP_Matrix and Engine. How are they Related? Understand Prediction_status Values

    - by user702295
    Do you know what these values are telling you? COUNT(*) PREDICTION_STATUS DO_FORE DO_AGGRI AGGRI_98 AGGRI_99 LEVEL_ID 19854 99 1 1 1 1 3 1077 99 0 1 1 1 0 262691 99 1 1 -1 56 99 0 1 1 1 2 1 98 1 1 1 1 1 99 0 1 1 1 748796 1 1 1 4 351633 1 1 1 1 1 2 1877829 97 1 1 4 840 99 1 1 1 1 27 99 0 1 1 1 3 1 97 1 1 -1 66712 99 1 1 1 1 2 53213 1 1 1 1 1 3 2560 98 1 1 4   Check out The Column Prediction_Status, MDP_Matrix and Engine. How are they Related? Understand Prediction_status Values (Doc ID 1509754.1) This customer is adding an additional processing burden, adding no value.  The incoming data should be scrubbed to eliminate the overhead. 

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  • New Exadata and Exalogic public references

    - by Javier Puerta
    The following are new public references for Exadata and Exalogic: Allegis Accelerates HR Processing for 130,000 Contractors  Oracle customer, Allegis, describes how Oracle Exadata and Oracle Exalogic helped consolidate and optimize critical processes running in Oracle's PeopleSoft.  Hyundai Motor Company Document Cuts Repository Management and Access Times Approximately 85%, Saves More Than US$1 Million in Yearly Printing and Paper Costs The company implemented Oracle Exalogic Elastic Cloud, Oracle Exadata Database Machine, Oracle WebLogic, and Oracle WebCenter Content 11g to ensure high performance and stability for its new document-centralization system  University of Minnesota Reduces Data Center Footprint while Enhancing Performance and Manageability with Oracle Exadata Database Machine   Leading Research Institution Consolidates More Than 200 Databases to Approximately 20 while Maximizing Availability for Thousands of Users SThree Prepares to Triple in Size with a Cloud-Based Architecture and a Consolidated, Stable, and Scalable Global Platform  By consolidating 68 databases into a single Oracle Exadata Database Machine, SThree achieved the stability and scalability it needed to support its growth targets. Further enhancements to the organization’s core systems include a planned upgrade for Siebel Contact Center and improved integration with Oracle Fusion Middleware.

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  • JSR updates

    - by heathervc
    There were many JSR updates over the last week.  See below. JSR 258, Mobile User Interface Customization API, has published a Maintenance Release. JSR 257, Contactless Communication API, has published a Maintenance Release 2. JSR 180, SIP API for J2ME, has published a Final Release 5. JSR 269, Pluggable Annotation Processing API, has published a Maintenance Release. JSR 344, JavaServerTM Faces 2.2, has published an Early Draft Review.  The review closes on 8 December.

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  • Aberdeen 10/25 Webcast: Service Excellence and the Path to Business Transformation

    - by Charles Knapp
    The uncertain economy has had a sustained impact on service organizations and processes. The impact has contributed to new complexities - new customer engagement channels, enhanced user and customer expectations, rapidly evolving technologies, increased competition, and increased compliance and regulatory mandates. Yet many organizations have embraced these challenges by investing in and transforming customer service to evolve, differentiate, and thrive under current constraints. What is their secret? Transforming Support Centers into Profit Centers According to the recent Aberdeen research report, “Service Excellence and the Path to Business Transformation”, service is now viewed as a strategic profit center at nearly 70% of organizations. As customers demand improved service, in terms of speed, efficiency and reliability, an organization's success has become increasingly dependent on optimizing the customer ownership experience. Those service organizations focused on providing easy, consistent, and relevant interactions across the customer lifecycle, including service and support delivery, are experiencing higher levels of customer acquisition and retention and are achieving better revenue and margin growth rates.  Don't miss this opportunity to learn how to transform to provide the next generation of service offerings. Click here to register now for the webcast and download a complimentary copy of this informative new research paper.

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  • New London based .NET User Group &ndash; first meeting June 2nd on MEF

    - by Eric Nelson
    A new .NET User Group is starting up in Canary Wharf - CWDNUG. It plans to focus on technology for financial services such as: WPF & Silverlight. F# & other alternative languages. High volume systems & complex event processing. Agile tools, methodologies and experiences. Open source systems that you can use (or that need your help!). Upcoming releases from Microsoft (WP7, VS2010, TPL). The first meeting is on June 2nd and Marlon (WPF MVP) will be speaking about MEF. Register today as there are only 15 spots left :-) (as of Thursday 20th May)

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  • DRY, string, and unit testing

    - by Rodrigue
    I have a recurring question when writing unit tests for code that involves constant string values. Let's take an example of a method/function that does some processing and returns a string containing a pre-defined constant. In python, that would be something like: STRING_TEMPLATE = "/some/constant/string/with/%s/that/needs/interpolation/" def process(some_param): # We do some meaningful work that gives us a value result = _some_meaningful_action() return STRING_TEMPLATE % result If I want to unit test process, one of my tests will check the return value. This is where I wonder what the best solution is. In my unit test, I can: apply DRY and use the already defined constant repeat myself and rewrite the entire string def test_foo_should_return_correct_url(): string_result = process() # Applying DRY and using the already defined constant assert STRING_TEMPLATE % "1234" == string_result # Repeating myself, repeating myself assert "/some/constant/string/with/1234/that/needs/interpolation/" == url The advantage I see in the former is that my test will break if I put the wrong string value in my constant. The inconvenient is that I may be rewriting the same string over and over again across different unit tests.

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  • Map, Set use cases in a general web app

    - by user2541902
    I am currently working on my own Java web app (to be shown in interview to get a Java job). So I've not worked on Java in professional environment, so no guidance. I have database, entity classes, JPA relationships. Use cases are like, user has albums, album has pics, user has locations, location has co-ordinates etc. I used List (ArrayList) everywhere. I can do anything with List and DB, get some entry, find etc. For example, I will keep the list of users in List, then use queries to get some entry (why would I keep them in Map with id/email as key?). I know very well the working and features, implementing classes of Map, Set. I can use them for solving some algorithm, processing some data etc. In interviews, I get asked have you worked with these, where have you used them etc. So, Please tell me cases where they should be used (DB or any popular real use case).

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