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  • Warn user when new data is inserted on database

    - by João Menighin
    I don't know how to search about this so I'm kinda lost (the two topics I saw here were closed). I have a news website and I want to warn the user when a new data is inserted on the database. I want to do that like here on StackOverflow where we are warned without reloading the page or like in facebook where you are warned about new messages/notifications without reloading. Which is the best way to do that? Is it some kind of listener with a timeout that is constantly checking the database? It doesn't sounds efficient... Thanks in advance.

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  • Mass 301 redirects mvc

    - by Massive Boisson
    Hi (this is a common problem with few twists). We are on IIS 6, without ISAPI_Rewrite with .net 4 and mvc 2 app. We would like to 301 forward bunch of old urls to matching new urls. (We are deploying a new site and google index will still point to old urls, and we need to map those urls to new urls) a) Is there a way to do this through IIS (but without ISAPI_Rewrite) and how? b) Is there a way to do this through the application code and how? All answers really appreciated, Thanks a lot --MB

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  • SVN merge adding parameters. WTF? Or how to do big merges?

    - by HeavyWave
    I am doing an SVN merge for a branch, and in one of the files I see this: GetQueryReferenceData(int sessionId, Int32 sessionId) Which means that the merge tool just added another parameter without asking any questions. Imagine if it was a call to Substring(0) and in another branch it would be Substring(0,2). That is completely different behavior, how does it even get to decide which one to choose? Good thing it came up during compile time. The problem is that it will not be marked as a conflict and will be merged automatically. That is very dangerous behavior and if you don't have the luxury of having a unit test for every line of code - you are screwed. What am I doing wrong and how to do big merges without the merging tool putting in dangerous changes silently? Is there a merge tool that is not language agnostic? I am using Tortoise SVN.

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  • .Net Round-trip Types

    - by Fujiy
    I making a method that generate a unique string key for some parameters. But the same key if call with same values. I just accept primitive types, string, DateTime, Guid, and Nullable(since I append types together, I can distinguish who is int and who is int?), because I can convert all to string without lost values or precision.(for float and double a use ToString("R"), to DateTime ToString("O")). Exists a easy way to know which types I can transform in strings without conflict? And how do this transform(how I said before, float, double and datetime have specific ways) Thanks

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  • What's in-memory database technology that do realtime materialized view?

    - by KA100
    What I'm looking for is something like materialized views in front-end that shows my data in diffident ways without full recalculation. let's say I have stock watcher with many front-end views and dashborads some based on aggregation, order by or just filter with different criteria defined realtime by user. Now, I receive online record updates from some webservice and it's not like "data warehouse" every single record can be updated any time and it actually happens every second. Is there any technology can help me in such I create something like materialized view and it's update it without doing full recalculation every time data changed. Thank you.

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  • Access the camera of a Smartphone using libGDX

    - by PH-zero
    I searched the web, browsed through the libGDX wiki, but without success. My Question: Is there a way, to access the camera of smartphones, let the user take a photo, and then store the image in a Texture-instance? I could imagin something like this: @Override public void onCamTrigger(){ ApplicationType appType = Gdx.app.getType(); switch (appType) { case Android: case iOS: Texture someTexture = new Texture(Gdx.input.getCamera().getImage()); //do something with the Texture instance... someTexture.dispose(); break; default: break; } } Of course this is pure fiction! I know that there's a lot more to this like opening the camera, displaying it, then take a photo etc. . But is there a convenience method like this? If so, how does it work? On Android, i think i could implement it without using any convenience methods offered by libGDX, but i have no idea on how this works on iOS =/

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  • How to close a form in UserControl

    - by FJPoort
    I created a UserControl with the buttons Save, Close and Cancel. I want to close the form without saving on the Cancel button, prompt a message to save on the Close button and Save without closing on the Save button. Normally, I would have used this.Close() on the Cancel button, but the UserControl doesn't have such an option. So I guess I have to set a property for that. Scrolling down the "Questions that may already have your answer" section, I came across this question: How to close a ChildWindow from an UserControl button loaded inside it? I used the following C# code: private void btnCancel_Click(object sender, EventArgs e) { ProjectInfo infoScreen = (ProjectInfo)this.Parent; infoScreen.Close(); } This does the job for one screen, but I wonder if I have to apply this code for all the screen I have? I think there should be a more efficient way. So my question is: Do I need to apply this code for every form I have, or is there another (more efficient) way?

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  • searching within a compressed sorted fixed width file

    - by user275455
    Assume I have a regular compressed fixed width file that is sorted on one of the fields. Given that I know the length of the records, I can use lseek to implement a binary search to records with fields that match a given value without having to read the entire file. Now the difficulty is that the file is gzipped. Is it possible to do this without completely inflating the file? If not with gzip. is there any compression that supports this kind of behavior?

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  • Who will take benefit of graceful degradation? Desktop users, mobile users, screen reader users?

    - by metal-gear-solid
    How many percentage of desktop users? How many percentage of mobile, ipad, iphone users? and is there any other devices to access website which do not support JavaScript? Is JavaScript also a problem for screen reader users? Who will take benefit if we make things without JavaScript or we give non-JavaScript version? Who will take benefit of graceful degradation? Desktop users, mobile users, screen reader users? Is it worth to give time for graceful degradation? Is WCAG 2.0 do not prefer to use Javascript? Why anyone will like to surf net without JavaScript?

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  • Managed HttpListener vs C++ Network Lib - Requires admin rights?

    - by Max
    So, I have noticed that starting an HttpListener is considered impolite according to Win 7. I cannot do so without administrative rights without adding myself to some URL reservation list. In theory, this is alright, but I'd like to make my program as little invasive as possible. My main other alternative is something like the c++ Network Library, which utilizes boost. This is probably not as simple as a HttpListener though. Will this circumvent the admin rights requirement for listening to some HTTP url? How does windows handle http listening? Right now I'm just listening to http://+:xxxx/url, I guess it's fully possible to just create a Socket listening at port xxxx and provide my own/third party http implementation?

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  • Hierarchy of modules in guice

    - by Niko
    Hi, I'd like to run a unit test where a constant is slightly different than in the standard version. That is, in my default module, the following is bindConstant().annotatedWith(Names.named("number of players")).to(4); but in testing, I'd like to try this line instead: bindConstant().annotatedWith(Names.named("number of players")).to(2); Id like to achieve that without copying all of the rest of the module. What I really want is a "default" module that is "below" a more specialized module, such that in case of conflict, the specialized module wins (instead of throwing an exception, which is what guice does). In essence, my question is: how does anybody arrange for more than one module without lots of code duplication?

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  • What are the best security measures to take for making certain directories private?

    - by Sattvic
    I have a directory on my server that I do not want Search Engines to crawl and I already set this rule in robots.txt I do want people that have logged in to be able to have access to this directory without having to enter a password or anything. I am thinking that a cookie is the best thing to put on users computers after they login, and if they have a cookie, they can access the directory. Is this possible, or is there a better way? I want people without this cookie to not have access to this directory - access for members only Any suggestions on the best design for this?

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  • Why does SQL Server 2000 treat SELECT test.* and SELECT t.est.* the same?

    - by Chris Pebble
    I butter-fingered a query in SQL Server 2000 and added a period in the middle of the table name: SELECT t.est.* FROM test Instead of: SELECT test.* FROM test And the query still executed perfectly. Even SELECT t.e.st.* FROM test executes without issue. I've tried the same query in SQL Server 2008 where the query fails (error: the column prefix does not match with a table name or alias used in the query). For reasons of pure curiosity I have been trying to figure out how SQL Server 2000 handles the table names in a way that would allow the butter-fingered query to run, but I haven't had much luck so far. Any sql gurus know why SQL Server 2000 ran the query without issue? Update: The query appears to work regardless of the interface used (e.g. Enterprise Manager, SSMS, OSQL) and as Jhonny pointed out below it bizarrely even works when you try: SELECT TOP 1000 dbota.ble.* FROM dbo.table

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  • Solr adding document cycle & wait on response issue

    - by user1585896
    I am trying to send http post request to Solr for adding 50000 documents (all individual request one after another in while loop). I am using DefaultHttpClient in java to connect to Solr and when I use execute method on my HttpPost Solr takes 3 to 4 ms to response. I have commit=false, autoCommit=false, autoSoftCommit=false. My question is why it takes that much time to response and why cycle it follows to add new document. Basically I want to send add request but do not want to commit to see how many request can Solr handle without doing any kind of commits(without having to do any disk access). My guess is with above parameter tuned off I should be hitting Solr about 10000 times every second, but my result is 300 times a second. I am generating random data to add in my code.

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