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  • Closure vs Anonymous function (difference?)

    - by Maxim Gershkovich
    Hi, I have been unable to find a definition that clearly explains the differences between a closure and an anonymous function. Most references I have seen clearly specify that they are distinct "things" yet I can't seem to get my head around why. Could someone please simplify it for me? What are the specific differences between these two language features? Which one is more appropriate in what scenarios?

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  • 12.04 scanner works fine as super-user but is not recognised as a normal user

    - by Eugénio Outeiro
    I have an all-in-one printer Epson SX130, wich I have just tried to install. I got the printer working with no problem, but I couldn't set the scanner up. I have had another all-in-one printer before (Brother DCP-125C), and had just the same problem, so I decided to try the same trick I used to do then, running the scanning program as super-user: $sudo simple-scan and $ sudo xsane Once again, it worked just fine, and I could use the scanner. Anyhow, this solution is a little annoying, because I also have to change the permissions to the files I get scanning like this. I have been searching the internet for solutions and got to know this must have something to do with user groups permissions, but couldn't find a satisfying solution. Is there anyone with an idea? Thank you in advance.

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  • Keep user and user profile in different tables?

    - by Andrey
    I have seen in a couple of projects that developers prefer to keep essential user info in one table (email/login, password hash, screen name) and rest of the non essential user profile in another (creation date, country, etc). By non-essential I mean that this data is needed only occasionally. Obvious benefit is that if you are using ORM querying less fields is obviously good. But then you can have two entities mapped to same table and this will save you from querying stuff you don't need (while being more convenient). Does anybody know any other advantage of keeping these things in two tables?

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  • OSX - User home directories shared via NFS

    - by Hugh
    Hi, I've run into some problems with how I've got user home directories set up on our system here. Our server is an XServe, using Open Directory to manage the user accounts. The majority of our workstations are OSX, but there are a few running Linux (Centos 5.3), and, as time goes on, we expect the proportion of Linux workstations to increase (at some point, we expect to move the server side over to Linux too, but for now we're running with what we've already got) To ensure that the Linux and OSX workstations both see user's home directories in the same place, I shared the home directories using NFS. On the server end, the home directories are stored in: /Volumes/data/company_users This is mounted on the workstations to: /mount/company_users This work fine on the Linux workstations, but there is some weirdness under OSX. For the user who is logged in through the GUI, it all works just fine. However, if a user tries to SSH into a machine that they are not the primary user on, they often have no access to their own home directory. It looks as though OSX is trying to do something else to the user home directories mount point when you log in through the GUI.... For example, on this machine (nv001), I (hugh) am logged into the GUI. Last login: Mon Mar 8 18:17:52 on ttys011 [nv001:~] hugh% ls -al /mount/company_users total 40 drwxrwxrwx 26 hugh wheel 840 27 Jan 19:09 . drwxr-xr-x 6 admin admin 204 19 Dec 18:36 .. drwx------+ 128 hugh staff 4308 27 Feb 23:36 hugh drwx------+ 26 matt staff 840 4 Dec 14:14 matt [nv001:~] hugh% So Matt's home directory is accessible to him. However, if I try to switch to him: [nv001:~] hugh% su - matt Password: su: no directory [nv001:~] hugh% Or: [nv001:~] hugh% su matt Password: tcsh: Permission denied tcsh: Trying to start from "/mount/company_users/matt" tcsh: Trying to start from "/" [nv001:/] matt% Does anyone have any idea why it might be doing this? It's causing me all sorts of problems at the moment... The only machine that I can successfully switch users at the moment is the server that the user directories are stored on, where /mount/company_users is actually just a symlink to /Volumes/data/company_users Thanks

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  • New user profile creation error - Windows cannot open *.exe

    - by Jake
    I have a windows 7 laptop with the user "mydomain\boy" that cannot log in to the laptop. the error message is something like "User profile service cannot log in the user boy". I then logged in with the domain admin account "mydomain\admin" and then went to delete the "mydomain\boy" from my computer system properties advance system settings user profiles settings. I also ensure that the user is deleted from control panel user accounts. I then also deleted the user folder c:\users\boy I also checked that the registry at this location HKLM\software\microsoft\windows nt\currentversion\profilelist\ and ensure that there is no entry for boy. I followed http://support.microsoft.com/kb/947215 using the method 3 "fix it for me" but does not seem to do anything. (or i don't know how to use it). AFTER EVERYTHING DONE ABOVE... Everytime i log in with a new user, be it boy, girl or anything other domain account (other than the admin account already created when I first logged in to begin the fix/break), it takes a long time, and when the "preparing desktop" goes away, it starts to exe cannot open error e.g. regsvr.exe etc.. file association problem with exe QUESTION (phew finally..): Please tell me how to fix it? Thanks!

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  • Mac OS X - User home directories shared via NFS

    - by Hugh
    I've run into some problems with how I've got user home directories set up on our system here. Our server is an XServe, using Open Directory to manage the user accounts. The majority of our workstations are OS X, but there are a few running Linux (Centos 5.3), and, as time goes on, we expect the proportion of Linux workstations to increase (at some point, we expect to move the server side over to Linux too, but for now we're running with what we've already got) To ensure that the Linux and OS X workstations both see user's home directories in the same place, I shared the home directories using NFS. On the server end, the home directories are stored in: /Volumes/data/company_users This is mounted on the workstations to: /mount/company_users This work fine on the Linux workstations, but there is some weirdness under OS X. For the user who is logged in through the GUI, it all works just fine. However, if a user tries to SSH into a machine that they are not the primary user on, they often have no access to their own home directory. It looks as though OS X is trying to do something else to the user home directories mount point when you log in through the GUI.... For example, on this machine (nv001), I (hugh) am logged into the GUI. Last login: Mon Mar 8 18:17:52 on ttys011 [nv001:~] hugh% ls -al /mount/company_users total 40 drwxrwxrwx 26 hugh wheel 840 27 Jan 19:09 . drwxr-xr-x 6 admin admin 204 19 Dec 18:36 .. drwx------+ 128 hugh staff 4308 27 Feb 23:36 hugh drwx------+ 26 matt staff 840 4 Dec 14:14 matt [nv001:~] hugh% So Matt's home directory is accessible to him. However, if I try to switch to him: [nv001:~] hugh% su - matt Password: su: no directory [nv001:~] hugh% Or: [nv001:~] hugh% su matt Password: tcsh: Permission denied tcsh: Trying to start from "/mount/company_users/matt" tcsh: Trying to start from "/" [nv001:/] matt% Does anyone have any idea why it might be doing this? It's causing me all sorts of problems at the moment... The only machine that I can successfully switch users at the moment is the server that the user directories are stored on, where /mount/company_users is actually just a symlink to /Volumes/data/company_users

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  • Ubuntu, User Accounts messed up

    - by Vor
    I need to fix Ubuntu Accounts some how but don't really see how it could be done. The problem is: files /etc/passwd and /etc/hostname and /etc/hosts where changed. /etc/passwd After John:x:1000:1000:John,,,:/home/serg:/bin/bash Befoure serg:x:1000:1000:John,,,:/home/serg:/bin/bash /etc/hosts After 127.0.0.1 localhost 127.0.1.1 John-The-Rippe Befoure 127.0.0.1 localhost 127.0.1.1 serg-Protege /etc/hostname After John-The-Ripper Befoure serg-PORTEGE-Z835 I was trying to simply changed this files but can not do this because permission denied. When I'm trying to login as a root I got this message: John@John-The-Ripper:~$ sudo -s [sudo] password for John: John is not in the sudoers file. This incident will be reported The file sudoers is empty: John@John-The-Ripper:~$ vi /etc/sudoers When I type users in cp: John@John-The-Ripper:~$ users John John When I type id, I got this: John@John-The-Ripper:~$ id uid=1000(John) gid=1000(serg) groups=1000(serg) This doesn't work eather: John@John-The-Ripper:~$ usermod -l John serg usermod: user 'serg' does not exist John@John-The-Ripper:~$ adduser serg adduser: Only root may add a user or group to the system. ater. Then I tried to go to the GRUB menu and from there log in as a root. I did this, but however When I tryed to create user serg, It gave me an error that group already exist. When I tried to change /etc/passwd it said 'permission denied' And this doens't do the trick: John@John-The-Ripper:~$ visudo visudo: /etc/sudoers: Permission denied visudo: /etc/sudoers: Permission denied Also The last thing I tried to do is to create a bootable USB and reinstall ubuntu, however I can not open USB-Creator because it asked me a root passwd. But it doesn't work. HELP ME PLEASE =)))

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  • Oracle Applications Global User Experience

    - by ultan o'broin
    Today, we're launching Oracle's first ever blog for global user experience (UX) applications issues. We'll be talking about how we design and develop applications for global use, looking at the cultural factors, internationalization (I18n), localization (L10n) and language used for a start. We will also discuss how we study and work with real users so that our customers have applications that allow them to be productive regardless of where they are located in the world. In addition, we will inform you about any globally-related events we know about, and about product features, development frameworks, tools, information and relevant to our worldwide customers. Also, of course, we hope to hear from you, too. If you have anything you want to know about our global user experience, a localization you'd like, or cultural feature you think would be useful, then let us know. If you have any tips or guidelines you'd like to share in this space, then this blog is for you too! As far as global user experience is concerned, you don't have to be lost in translation. Hence the name of the blog!

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  • Managing User & Role Security with Oracle SQL Developer

    - by thatjeffsmith
    With the advent of SQL Developer v3.0, users have had access to some powerful database administration features. Version 3.1 introduced more powerful features such as an interface to Data Pump and RMAN. Today I want to talk about some very simple but frequently ran tasks that SQL Developer can assist with, like: identifying privs granted to users managing role privs assigning new roles and privs to users & roles Before getting started, you’ll need a connection to the database with the proper privileges. The common ROLE used to accomplish this is the ‘DBA‘ role. Curious as to what the DBA role is actually comprised of? Let’s find out! Open the DBA Console First make sure you’re connected to the database you want to manage security on with a privileged administrator account. Then open the View menu and select ‘DBA.’ Accessing the DBA panel ‘Create’ a Connection Click on the green ‘+’ button in the DBA panel. It will ask you to choose a previously defined SQL Developer connection. Defining a DBA connection in Oracle SQL Developer Once connected you will see a tree list of DBA features you can start interacting with. Expand the ‘Security’ Tree Node As you click on an object in the DBA panel, the ‘viewer’ will open on the right-hand-side, just like you are accustomed to seeing when clicking on a table or stored procedure. Accessing the DBA role If I’m a newly hired Oracle DBA, the first thing I might want to do is become very familiar with the DBA role. People will be asking you to grant them this role or a subset of its privileges. Once you see what the role can do, you will become VERY protective of it. My favorite 3-letter 4-letter word is ‘ANY’ and the DBA role is littered with privileges like this: ANY TABLE privs granted to DBA role So if this doesn’t freak you out, then maybe you should re-consider your career path. Or in other words, don’t be granting this role to ANYONE you don’t completely trust to take care of your database. If I’m just assigned a new database to manage, the first thing I might want to look at is just WHO has been assigned the DBA role. SQL Developer makes this easy to ascertain, just click on the ‘User Grantees’ panel. Who has the keys to your car? Making Changes to Roles and Users If you mouse-right-click on a user in the Tree, you can do individual tasks like grant a sys priv or expire an account. But, you can also use the ‘Edit User’ dialog to do a lot of work in one pass. As you click through options in these dialogs, it will build the ‘ALTER USER’ script in the SQL panel, which can then be executed or copied to the worksheet or to your .SQL file to be ran at your discretion. A Few Clicks vs a Lot of Typing These dialogs won’t make you a DBA, but if you’re pressed for time and you’re already in SQL Developer, they can sure help you make up for lost time in just a few clicks!

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  • Launch Webcast Q&A: Oracle WebCenter Suite 11g - The Platform for the Modern User Experience

    - by howard.beader(at)oracle.com
    Did you have a chance to watch the Oracle WebCenter Suite 11g Launch Webcast yet? Andy MacMillan presented some great information on the webcast and answered quite a few of your questions in the Q&A session as well. For your reading pleasure we have captured a number of the questions and answers and they are summarized below: Question: Can you tell me what should our Portal strategy be for integrating and extending our Oracle enterprise applications? Answer: We recommend that you look at this in two steps, the first would be to ensure that you have a good understanding of our common user experience architecture. Internally our product teams at Oracle are already investing in this quite heavily today for Fusion Applications and this is driving natural convergence from a UX strategy standpoint. The second step would be to look at how best to componentize the back office applications so that the business users across your organization can take advantage of these -- don't make it just about putting a new skin on top of what you already have from an application standpoint, instead look at how best to embed the social computing capabilities as part of the solution for your business users. Question: We are currently using the BEA WebLogic Portal now, should we stay on WLP or should we be looking at moving to WebCenter or when should we move to WebCenter? Answer: Our strategy has been called "Continue & Converge", this theme means that you can continue to use WebLogic or Plumtree portals until your organization is ready to move to WebCenter and in the mean time you can continue to deploy what you need to in your organization of WLP or WCI Portals with the full support of Oracle. In addition WebCenter Services can be leveraged for social computing to complement what you are already doing today and enable your organization to take advantage of some of the latest and greatest social computing capabilities. We have migration scripts and conversion capabilities available as well as programs where Oracle can help you evaluate your options to decide how best to move forward. WebCenter provides the best of the best capabilities and will enable you to take advantage of new capabilities that may not exist in your current portal today. In the end though it's up to you as a customer as to when you want to make the transition to Oracle WebCenter Suite. Question: Can you tell me how is Oracle leveraging WebCenter internally and for its Application and Middleware product UX strategies? Answer: Internally, Oracle is leveraging WebCenter for our employees and thus far we are seeing significant updates with our users taking advantage of the business activity streams, team spaces and collaboration capabilities. From a product strategy standpoint, our product teams are taking advantage of the common user experience architecture and leveraging WebCenter to provide social and collaborative capabilities to the Oracle Applications and providing new types of composite applications with what is coming with Fusion Applications. WebCenter also provides a common user experience across all the products in the Oracle Fusion Middleware family as well. Question: Our organization is currently using SharePoint, but we are also an Oracle Applications customer, how should we be thinking about WebCenter as we move forward? Answer: Great question. Typically, we are seeing organizations using SharePoint for its core use cases of small team collaboration and file server replacement. WebCenter can connect to SharePoint as a content source to feed into WebCenter quite easily and it leverages the robust Oracle ECM product under WebCenter as well. In addition, SharePoint team sites can be connected to WebCenter utilizing our SharePoint connector. With Oracle WebCenter though, we are really targeting business users and enterprise applications, thus affecting positive change on the processes that drive the business to improve productivity across your organization. Question: Are organizations today using WebCenter as a Web platform for externally facing public websites? Answer: Yes, we are seeing a convergence around web content management and portal types of websites with customers converting them from just broadcasting content to making it a much richer personalized experience and also exposing back-office applications as well. Web Content Management capabilities are already embedded in WebCenter so that organizations can take advantage now of the benefits a personalized web experience provides for your customers. This is simply a short summary of a few of the questions addressed on the webcast, please tune in now to learn more about Oracle WebCenter, the user experience platform for the enterprise and the web! The Oracle WebCenter Suite 11g Launch Webcast can be found here

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  • Cox Communications' Strategic Approach to Enterprise User Experience: How Change Management and Usab

    - by Applications User Experience
    Author: Anna Wichansky, Senior Director, Applications User Experience, and Chair, Oracle Usability Advisory Board As part of our work in the User Experience group, our teams often go to Customer events such as the Higher Education User Group (HEUG) conference, Alliance 2010. This year's event was held in San Antonio, Texas, and was attended by hundreds of higher education, government, and public sector users of Oracle applications. The User Assistance team used this opportunity to reach out to customers in the Educational and Government sectors to better understand how their organizations are currently approaching help, messages, and other forms of user assistance. What is User Assistance? For us, user assistance is more than the old books of users' manuals and documentation. User assistance is anything that helps users get their jobs done quickly and efficiently. Instead of expecting users to stop and look through a guide or manual, we have been developing solutions that are embedded within the interface. We know that when people are having difficulty with a task, they want to be able to search efficiently for solutions and collaborate with coworkers. We know that they want to find their answers right there, right then, so that they can get on with their work. In our interviews at Alliance, we wanted to learn what the participants could tell us about what was happening on their campuses and in their institutions. Figure 1. For Oracle User Assistance, it's not just about books any more. So what did we do? Off to Texas, we recruited 10 people from nine different government and education organizations to come to our Oracle User Experience Onsite Usability Labs. We conducted one-hour interviews with these folks and asked them all about User Assistance--what people are doing, what they would like to do, what technologies they are using, what they would like to use, and ultimately what should we as a company be planning for our future products. We used this as an opportunity also to show them some of our design concepts for Fusion User Assistance, our next generation of user assistance based on the best of our user assistance in other products. Figure 2. Interviewing a technical user at Alliance. What we learned... People are not using paper or online manuals anymore. They don't want to see a manual that is written for technical users and that doesn't make sense to the ordinary end user. They really don't want to have to flip through a manual trying to find an answer to their question. Even when the answer might be tailored to their organization, they don't want to dig through documentation. When they need an answer now, they don't have the patience to dig for something that might or might not be clearly written. What does it mean to an organization when users don't want to deal with documentation? In many cases, it means that frustrated users make phone calls to try to find the answers that they need immediately. Phone calls are expensive to an organization and frustrating to the technical support staff who have provided documentation that no one wants to read anymore. If they don't call, they email for help often, and many users are asking for the same information. The bottom line is that if they could get that help immediately in the interface, they wouldn't have to make those calls or send those emails -- and that saves time and money. Our Fusion User Assistance options to customize help and get help for the task immediately were seen as an opportunity by these technical users to build the solutions that their users need and want. Figure 3. Joyce Ohgi and Laurie Pattison of Applications UX. Chicken Fried Steak. That was huge. But then, this was Texas, where we discovered a lot of things come very big. Drinks are served in quart-size glasses and dishes like Chicken Fried Steaks are served on platters not plates. We saw three-pound cinnamon rolls that you down with tea sweet enough to curl your hair. Deep in the heart of Texas, we learned a lot, and we ate even more.

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  • What is the technical reason that so many social media sites don't allow you to edit your text?

    - by Edward Tanguay
    A common complaint I hear about Facebook, Twitter, Ning and other social sites is that once a comment or post is made, it can't be edited. I think this goes against one of the key goals of user experience: giving the user agency, or the ability to control what he does in the software. Even on Stackexchange sites, you can only edit the comments for a certain amount of time. Is the inability for so many web apps to not allow users to edit their writing a technical shortcoming or a "feature by design"?

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  • iOS User guidelines at startup

    - by user963737
    I was wondering is there a way to give the user a small guided tour of the app with small pops exactly above the UI elements indicating what it will do and not using the standard popups which iOS has. Something like if an icon is used to post status there should be a small pop up on top of it which tells us it is used to post status and can be closed a standard in in games to introduce the player to their UI.

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  • Add domain user as local admin in Windows 7 using VPN to connect to domain

    - by kev
    I am rebuilding my work computer from scratch and need to add my domain user as a local admin on my computer. I have successfully added my PC to the domain, but I cannot add my domain user account to the local admins. I have tried to do the following: Connect to the work domain using a Windows VPN Add my computer to the work domain Start right click on Computer Manage - go to Users and Groups right click on Administrators group and add my domain user The problem is that after adding my domain user to the Administrators group, I don't see my domain user under the Local Users group. When I try to log on as my domain user I get the following error message: There are currently no logon servers available to service the logon request Any ideas?

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  • VB.NET 2008 - Anonymous Function

    - by James Brauman
    Hi, On Form Load I populate a menu with all possible colors so they user can pick a color. However when they pick a color the forecolor of my label is not changed. Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load ' When the form loads, we want to populate the color menu item with all the possible colors that we could change the label to. For Each currentColor As KnownColor In [Enum].GetValues(GetType(KnownColor)) ' Declare the knowColor again - we must do this to be able to do anonymous delegates in VB.NET Dim actualCurrentColor As KnownColor = currentColor ' Get the name for this color Dim colorName As String = [Enum].GetName(GetType(KnownColor), actualCurrentColor) ' Create a new menu item for this color Dim newMenuItem As ToolStripMenuItem = New ToolStripMenuItem(colorName) ' Add a handler to this menu item so when it is clicked, we change the heading color AddHandler newMenuItem.Click, Function(s As System.Object, events As System.EventArgs) (HeadingLabel.ForeColor = Color.FromKnownColor(actualCurrentColor)) ' Add the menu item to the colors menu ColorToolStripMenuItem.DropDownItems.Add(newMenuItem) Next End Sub What am I doing wrong? Thanks

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  • C# Anonymous method variable scope problem with IEnumerable<T>

    - by PaN1C_Showt1Me
    Hi. I'm trying to iterate through all components and for those who implements ISupportsOpen allow to open a project. The problem is when the anonymous method is called, then the component variable is always the same element (as coming from the outer scope from IEnumerable) foreach (ISupportsOpen component in something.Site.Container.Components.OfType<ISupportsOpen>()) { MyClass m = new MyClass(); m.Called += new EventHandler(delegate(object sender, EventArgs e) { if (component.CanOpenProject(..)) component.OpenProject(..); }); itemsList.Add(m); } How should it be solved, please?

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  • detachEvent not working with named anonymous functions

    - by Polshgiant
    I ran into a problem in IE8 today (Note that I only need to support IE) that I can't seem to explain: detachEvent wouldn't work when using a named anonymous function handler. document.getElementById('iframeid').attachEvent("onreadystatechange", function onIframeReadyStateChange() { if (event.srcElement.readyState != "complete") { return; } event.srcElement.detachEvent("onreadystatechange", onIframeReadyStateChange); // code here was running every time my iframe's readyState // changed to "complete" instead of only the first time }); I eventually figured out that changing onIframeReadyStateChange to use arguments.callee (which I normally avoid) instead solved the issue: document.getElementById('iframeid').attachEvent("onreadystatechange", function () { if (event.srcElement.readyState != "complete") { return; } event.srcElement.detachEvent("onreadystatechange", arguments.callee); // code here now runs only once no matter how many times the // iframe's readyState changes to "complete" }); What gives?! Shouldn't the first snippet work fine?

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  • Return/consume dynamic anonymous type across assembly boundaries

    - by friism
    The code below works great. If the Get and Use methods are in different assemblies, the code fails with a RuntimeBinderException. This is because the .Net runtime system only guarantees commonality of anonymous types (<string, int> in this case) within assemblies. Is there any way to fool the runtime system to overcome this? I can expect the object in the debugger on the Use side, and the debugger can see the relevant properties. class Program { static void Main(string[] args) { UsePerson(); Console.ReadLine(); } public static void UsePerson() { var person = GetPerson(); Console.WriteLine(person.Name); } public static dynamic GetPerson() { return new { Name = "Foo", Age = 30 }; } }

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  • Scoping inside Javascript anonymous functions

    - by DCD
    I am trying to make a function return data from an ajax call that I can then use. The issue is the function itself is called by many objects, e.g.: function ajax_submit (obj) { var id = $(obj).attr('id'); var message = escape ($("#"+id+" .s_post").val ()); var submit_string = "action=post_message&message="+message; $.ajax({ type: "POST", url: document.location, data: submit_string, success: function(html, obj) { alert (html); } }); return false; } Which means that inside the anonymous 'success' function I have no way of knowing what the calling obj (or id) actually are. The only way I can think of doing it is to attach id to document but that just seems a bit too crude. Is there another way of doing this?

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  • Multiple return points in scala closure/anonymous function

    - by Debilski
    As far as I understand it, there is no way in Scala to have multiple return points in an anonymous function, i.e. someList.map((i) => { if (i%2 == 0) return i // the early return allows me to avoid the else clause doMoreStuffAndReturnSomething(i) }) raises an error: return outside method definition. (And if it weren’t to raise that, the code would not work as I’d like it to work.) One workaround I could thing of would be the following someList.map({ def f(i: Int):Int = { if (i%2 == 0) return i doMoreStuffAndReturnSomething(i) } f }) however, I’d like to know if there is another ‘accepted’ way of doing this. Maybe a possibility to go without a name for the inner function? (A use case would be to emulate some valued continue construct inside the loop.)

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  • Java anonymous class efficiency implications

    - by Po
    Is there any difference in efficiency (e.g. execution time, code size, etc.) between these two ways of doing things? Below are contrived examples that create objects and do nothing, but my actual scenarios may be creating new Threads, Listeners, etc. Assume the following pieces of code happen in a loop so that it might make a difference. Using anonymous objects: void doSomething() { for (/* Assume some loop */) { final Object obj1, obj2; // some free variables IWorker anonymousWorker = new IWorker() { doWork() { // do things that refer to obj1 and obj2 } }; } } Defining a class first: void doSomething() { for (/* Assume some loop */) { Object obj1, obj2; IWorker worker = new Worker(obj1, obj2); } } static class Worker implements IWorker { private Object obj1, obj2; public CustomObject(Object obj1, Object obj2) {/* blah blah */} @Override public void doWork() {} }; Thank you :)

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  • Where to put constant strings in C++: static class members or anonymous namespaces

    - by stone
    I need to define some constant strings that will be used only by one class. It looks like I have three options: Embed the strings directly into locations where they are used. Define them as private static constant members of the class: //A.h class A { private: static const std::string f1; static const std::string f2; static const std::string f3; }; //A.cpp const std::string f1 = "filename1"; const std::string f2 = "filename2"; const std::string f3 = "filename3"; //strings are used in this file Define them in an anonymous namespace in the cpp file: //A.cpp namespace { const std::string f1 = "filename1"; const std::string f2 = "filename2"; const std::string f3 = "filename3"; } //strings are used in this file Given these options, which one would you recommend and why? Thanks.

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  • Silverlight datagrid don't show any data with anonymous query RIA services

    - by user289082
    Hi all! I have an anonymous linq query that I bind to a datagrid, when I debug it brings alright the data but it doesn't show in the datagrid, I suspect that the request to RIA services isn't completed before I bound it to the datagrid. I could use the LoadOperation<() Completed event. But it only works with Defined Entities so how can I do that? For reference here is the last post: http://stackoverflow.com/questions/2403903/linq-query-null-reference-exception Here is the query: var bPermisos = from b in ruc.Permisos where b.IdUsuario == SelCu.Id select new { Id=b.Id, IdUsuario=b.IdUsuario, IdPerfil=b.IdPerfil, Estatus=b.Estatus, Perfil=b.Cat_Perfil.Nombre, Sis=b.Cat_Perfil.Cat_Sistema.Nombre }; I'm a totally newbie sorry if is a very simple question. Thanks!!

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  • matlab constant anonymous function returns only one value instead of an array

    - by Filo
    I've been searching the net for a couple of mornings and found nothing, hope you can help. I have an anonymous function like this f = @(x,y) [sin(2*pi*x).*cos(2*pi*y), cos(2*pi*x).*sin(2*pi*y)]; that needs to be evaluated on an array of points, something like x = 0:0.1:1; y = 0:0.1:1; w = f(x',y'); Now, in the above example everything works fine, the result w is a 11x2 matrix with in each row the correct value f(x(i), y(i)). The problem comes when I change my function to have constant values: f = @(x,y) [0, 1]; Now, even with array inputs like before, I only get out a 1x2 array like w = [0,1]; while of course I want to have the same structure as before, i.e. a 11x2 matrix. I have no idea why Matlab is doing this...

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