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  • C# - LINQ Statements with OR clauses

    - by user70192
    Hello, I am trying to use LINQ to return a list of tasks that are in one of three states. These states are: 10 - Completed 11 - Incomplete 12 - Skipped The state is available through a property called "TaskStateID". I can do this in LINQ with just one state as shown here: var filteredTasks = from task in tasks select task; // Do stuff with filtered tasks string selectedComboBoxValue = GetFilterComboBoxValue(); if (selected ComboBoxValue == 3) { filteredTasks = filteredTasks.Where(p => p.TaskStateID == 10); // How do I use an 'OR' here to say p.TaskStateID == 10 OR p.TaskStateID == 11 OR p.TaskStateID == 12 } As shown in the comment above, how do I use an 'OR' in a LINQ statement to say p.TaskStateID == 10 OR p.TaskStateID == 11 OR p.TaskStateID == 12? Thank you

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  • Lazy linux backup system?

    - by Alex
    Ok, so I want to say Time Machine, but that's note exactly what I'm looking for. I want to set up a system that will regularly (hourly?) back up the /home directory of our machine. time Machine style things are naturally preferable since they save space by only saving the changes, but honestly, this is important enough that I can suffer some waste. Any ideas?

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  • 'Static/Constant' business ojects

    - by UpTheCreek
    I don't quite know how to ask this question, so I'll phase it as an example: Imagine in an application you have a Country object. There are two properties of this object: Name, and a 'Bordering Countries' collection. More properties might be added later, but it will be the kind of information that would change very rarely (e.g. changes of country names/borders) Lets say this application needs to know about all of the countries in the world. Where would you store these object's state? How would you new them up? It seems silly to store all this state in the DB, since it won't change very often. One option might be to have an abstract 'country' base object, and have a class for each country inheriting from this with the details of each country. But this doesn't seem quite right to me. What is the proper way of dealing with these kinds of objects?

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  • Ruby on Rails: one-to-one mapping. Just semantics or really a different structure.

    - by Sam
    So I'm creating a plugin for Ruby on Rails to make implemented addresses including country, state, city, and zip_code for countries that can follow that paradigm a lot easier but that's beside the point expect for how the address model is associated. So starting with my address model. class Address < ActiveRecord::Base has_one :country has_one :state has_one :city has_one :zip_code end What's the difference between saying belongs_to and has_one Seems to be the same thing because both only require one model to declare ownership and foreign_key And it also seems that both are logical to say. an address belongs to an account and an account has one address Is this only semantics or is there are real difference

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  • What would be the best schema to store the 'address' for different entities?

    - by Cesar
    Suppose we're making a system where we have to store the addrees for buildings, persons, cars, etc. The address 'format' should be something like: State (From a State list) County (From a County List) Street (free text, like '5th Avenue') Number (free text, like 'Chrysler Building, Floor 10, Office No. 10') (Yes I don't live in U.S.A) What would be the best way to store that info: Should I have a Person_Address, Car_Address, ... Or the address info should be in columns on each entity, Could we have just one address table and try to link each row to a different entity? Or are there another 'better' way to handle this type of scenario? How would yo do it?

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  • SQL Server 2008 - Get Geography From Record

    - by user336786
    Hello, I am new to using the geography types in SQL Server 2008. I have a table in my database called "Location". "Location" has the following columns and types: Location -------- City nvarchar(256) State nvarchar(256) PostalCode nvarchar(25) Latitude decimal(9, 6) Longitude decimal(9, 6) Each Location is related to a Store record in my database. I am trying to find the stores within a 10 mile radius or postal code or city/state that a user enters. To accomplish this, I know that I need to rely on geographies. At this time I have: DECLARE @startingPoint geography; SET @startingPoint=geography::STGeomFromText('POINT(-122.34900 47.65100)', 4326); That gives me the starting point from a hard-coded textual value. However, I do not know how to convert a lat/long from my Location table into a geography instance. How do I convert a lat/long in my database to a geography instance so I can continue to work on my query? Thank you!

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  • Sql server management studio reporting "The semaphore timeout period has expired."

    - by nis-simonsen
    On our development sql server, executing any query containing more than approximately 700 characters stalls for about 10 seconds and then reports the following error: Msg 121, Level 20, State 0, Line 0 A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The semaphore timeout period has expired.) for example, this query select * from FooTable where id = ' (.. and then 700 spaces ..) ' fails fails with the timeout error while this one select * from FooTable where id = ' (.. and then 600 spaces ..) ' fails with the expected Msg 8169, Level 16, State 2, Line 1 Conversion failed when converting from a character string to uniqueidentifier. - immediately. Indeed, throwing any query, including random garbage at our dev sql server exhibits this behaviour, while any other sql server I have available acts as expected, so I would think that the query never actually gets to parsing on the server. I'm at a loss here - any hints?

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  • Database triggers / referential integrity and in-memory caching

    - by Ran Biron
    Do you see database triggers / referential integrity rules being used in a way that changes actual data in the database (changing row w in table x causes a change in row y in table z)? If yes, How does this tie-in with the increasing popularity of in-memory caching (memcache and friends)? After all, these actions occur inside the database but the caching system must be aware of them in order to reflect to correct state (or at least invalidate the possibly changed state). I find it hard to believe that callbacks are implemented for such cases. Does anyone have real-world experience with such a setup / real-world experience with considering such a setup and abandoning it (which way did you go? if caching, how do you enforce integrity?)

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  • How to create a non-persistent Elixir/SQLAlchemy object?

    - by siebert
    Hi, because of legacy data which is not available in the database but some external files, I want to create a SQLAlchemy object which contains data read from the external files, but isn't written to the database if I execute session.flush() My code looks like this: try: return session.query(Phone).populate_existing().filter(Phone.mac == ident).one() except: return self.createMockPhoneFromLicenseFile(ident) def createMockPhoneFromLicenseFile(self, ident): # Some code to read necessary data from file deleted.... phone = Phone() phone.mac = foo phone.data = bar phone.state = "Read from legacy file" phone.purchaseOrderPosition = self.getLegacyOrder(ident) # SQLAlchemy magic doesn't seem to work here, probably because we don't insert the created # phone object into the database. So we set the id fields manually. phone.order_id = phone.purchaseOrderPosition.order_id phone.order_position_id = phone.purchaseOrderPosition.order_position_id return phone Everything works fine except that on a session.flush() executed later in the application SQLAlchemy tries to write the created Phone object to the database (which fortunatly doesn't succeed, because phone.state is longer than the data type allows), which breaks the function which issues the flush. Is there any way to prevent SQLAlchemy from trying to write such an object? Ciao, Steffen

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  • Listing and deleting Git commits that are under no branch (dangling?)

    - by Samer Abukhait
    I've got a git repository with plenty of commits that are under no particular branch, I can git show them but when I try to list branches that contain them, it reports back nothing: I thought this is the dangling commits/tree issue (as a result of -D branch), so I pruned the repo, but I still see the case after that: $ git fetch origin $ git fsck --unreachable $ git fsck No output, nothing dangling (right?) $ git show 793db7f272ba4bbdd1e32f14410a52a412667042 commit 793db7f272ba4bbdd1e32f14410a52a412667042 Author: .. But $ git branch --contains 793db7f272ba4bbdd1e32f14410a52a412667042 Gives no output What exactly is the state of that commit? How can I list all commits with similar state, How can I delete commits like those?

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  • Is there any way to determine what type of memory the segments returned by VirtualQuery() are?

    - by bdbaddog
    Greetings, I'm able to walk a processes memory map using logic like this: MEMORY_BASIC_INFORMATION mbi; void *lpAddress=(void*)0; while (VirtualQuery(lpAddress,&mbi,sizeof(mbi))) { fprintf(fptr,"Mem base:%-10x start:%-10x Size:%-10x Type:%-10x State:%-10x\n", mbi.AllocationBase, mbi.BaseAddress, mbi.RegionSize, mbi.Type,mbi.State); lpAddress=(void *)((unsigned int)mbi.BaseAddress + (unsigned int)mbi.RegionSize); } I'd like to know if a given segment is used for static allocation, stack, and/or heap and/or other? Is there any way to determine that?

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  • Gesture recognizer for mouse down and up in iPhone SDK

    - by user545201
    I want to catch both mouse down and mouse up using gesture recognizer. However, when the mouse down is caught, mouse up is never caught. Here's what I did: First create a custom MouseGestureRecognizer: @implementation MouseGestureRecognizer -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesBegan:touches withEvent:event]; self.state = UIGestureRecognizerStateRecognized; } -(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { [super touchesEnded:touches withEvent:event]; self.state = UIGestureRecognizerStateRecognized; } @end Then bind the recognizer to a view in view controller: UIGestureRecognizer *recognizer = [MouseGestureRecognizer alloc] initWithTarget:self action:@selector(handleGesture:)]; [self.view addGestureRecognizer:recognizer]; When I click mouse in the view, the touchesBegan is called, but touchesEnded is never called. Is it because of the UIGestureRecognizerStateRecognized? Any advice will be appreciated! Thanks!

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  • Intercept close Popup from Parent Page

    - by sangi
    Hi all, I have a question. In an html page, I have javascript code that allows me to open and close a popup window by clicking on a link displayed in the link, so the text displayed in the link changes to the state of the popup window (open-closed). With a variable true / false I manage the opening and closing of the popup window to click on a link whose text is aligned "opened popup" / "closed popup". The next step is to make this same change in state (true / false, "opened popup" / "close popup") directly by closing the popup window. The idea is to not have to refresh the page. Is this possible? Thank you and best regards

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  • Retractable button bar using animations

    - by AndroidDev
    I want to create a button bar that is retractable: when the user clicks on a special "handle" button, the button bar should slide out of view partially so only the handle remains visible. When the bar is in retracted state only the handle is visible. Clicking on the handle should "slide out" the button bar so it is completely visible again. Ideally, the bar would start out in retracted state. I have tried some approaches using TranslateAnimation, including using a layout animation or calling "View.startAnimation" when the handle is clicked, but no luck so far. Do you guys have any tips how to approach this? Is there any decent documentation out there regarding Android animations? The documentation I find is sketchy at best. For instance, I found examples that cause a view to slide into view automatically using TranslateAnimation and a LayoutAnimationController when calling "addView", but when I call removeView no animation seems to be triggered at all, even if I set an animation that should create the opposite motion.

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  • Problem with Ubuntu 10.04 and ATI

    - by Maximilinao
    I'm having a problem installing the drivers from the video card. Just finished installing the driver, reboot my OS, and my monitor is starting off in energy saving mode and does not boot Ubuntu. What I can do? Sorry for my English. I used the Google translator.

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  • Anonymous users support vs Google bot

    - by Andy
    I have a User class in my web app that represents a user currently logged in. Every time a user vists a page, a User instance is populated based on authentication data supplied in cookies. A User instance is created even if an anonymous user logs in - and a corresponding new record is created in the User table in the database. This approach allows me to save some state info for the current user regardless of its type. The problem however with this approach is the Google bot, and other non-human web organisms crawling my pages. Every time a bot starts to walk around the site, thousands of useless records will be created in the database, each of them only to be used for a single page. Question: what is the best trade off? How to support anonymous users, save their state, and don't get too much overhead because of cookieless bots?

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  • Excel - pivot values in one cell (as comma-separated value)

    - by Chris
    Excel - pivot values in one cell (as comma-separated value) I have two columns of data: Supplier1|Product1 Supplier1|Product2 Supplier1|Product4 Supplier1|Product7 Supplier2|Product3 Supplier2|Product5 I want to 'pivot' around Supplier, and give the list of products in one single cell, comma-separated e.g. Supplier1|Product1,Product2,Product4,Product7 Supplier2|Product3,Product5 There's about 1000 suppliers, and 0 < products <= 10. My current workaround involves using pivot tables, saving as CSV etc and is very messy. A non-VBA solution would be amazing.

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  • Win7: Deadlock on filedialog

    - by Fuxi
    i'm having a very strange problem: i'm running win7 64bit on my laptop - i hooked an external HD via usb3. when saving something in certain applications (eg. notepad), the file dialog pops up then the whole system is freezing .. like applications won't react anymore, also taskmanager, so i can't terminate anything. i think it's the external HD which is powering down after a while. anyone who knows this problem and can tell me how to fix it? thanks

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  • creating new application in IIS 7 can cause other applications running on same IIS to log out?

    - by mokokamello
    Hi Experts I am new to IIS 7 and i am running a 16 user Application Server i received complains from my colleagues that their application log out suddenly and not saving edits. i compared the time of complains and they match the time when i was trying to install a new asp.net application or modify an existing one (of course not the very one they complained from) does this make sense? i mean are these events (application crash and installing new application on IIS) related together. note that i did not restart IIS

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  • Gridview adding row dynamically on RowDataBound with the same RowState (Alternate or Normal)

    - by rob waminal
    I am adding rows dynamically on code behind depending on the Row currently bounded on RowDataBound event. I want that added row to be the same state (Alternate or Normal) of the currently bounded row is this possible? I'm doing something like this but it doesn't follow what I want. I'm expecting the added row dynamically would be the same as the current row. But it is not. protected void gv_RowDataBound(object sender, GridViewRowEventArgs e) { if(e.Row.RowType == DataControlRowType.DataRow) { GVData data = e.Row.DataItem as GVData; // not original object just for brevity if(data.AddHiddenRow) { // the row state here should be the same as the current GridViewRow tr = new GridViewRow(e.Row.RowIndex +1, e.Row.RowIndex + 1, DataControlRowType.DataRow, e.Row.RowState); TableCell newTableCell = new TableCell(); newTableCell.Style.Add("display", "none"); tr.Cells.Add(newTableCell); ((Table)e.Row.Parent).Rows.Add(tr); } } }

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  • Is it a good idea to close and open hibernate sessions frequently?

    - by Gaurav
    Hi, I'm developing an application which requires that state of entities be read from a database at frequent intervals or triggers. However, once hibernate reads the state, it doesn't re-read it unless I explicitly close the session and read the entity in a new session. Is it a good idea to open a session everytime I want to read the entity and then close it afterwards? How much of an overhead does this put on the application and the database (we use a c3p0 connection pool also)? Will it be enough to simply evict the entity from the session before reading it again?

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  • Best practices for multiple asserts on same result in C#

    - by asdseee
    What do you think is cleanest way of doing multiple asserts on a result? In the past I've put them all the same test but this is starting to feel a little dirty, I've just been playing with another idea using setup. [TestFixture] public class GridControllerTests { protected readonly string RequestedViewId = "A1"; protected GridViewModel Result { get; set;} [TestFixtureSetUp] public void Get_UsingStaticSettings_Assign() { var dataRepository = new XmlRepository("test.xml"); var settingsRepository = new StaticViewSettingsRepository(); var controller = new GridController(dataRepository, settingsRepository); this.Result = controller.Get(RequestedViewId); } [Test] public void Get_UsingStaticSettings_NotNull() { Assert.That(this.Result,Is.Not.Null); } [Test] public void Get_UsingStaticSettings_HasData() { Assert.That(this.Result.Data,Is.Not.Null); Assert.That(this.Result.Data.Count,Is.GreaterThan(0)); } [Test] public void Get_UsingStaticSettings_IdMatches() { Assert.That(this.Result.State.ViewId,Is.EqualTo(RequestedViewId)); } [Test] public void Get_UsingStaticSettings_FirstTimePageIsOne() { Assert.That(this.Result.State.CurrentPage, Is.EqualTo(1)); } }

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  • How do I drop a foerign key in mssql?

    - by mmattax
    I have created a foreign key (in mssql / tsql) by: alter table company add CountryID varchar(3); alter table company add constraint Company_CountryID_FK foreign key(CountryID) references Country; I then run this query: alter table company drop column CountryID; and I get this error: Msg 5074, Level 16, State 4, Line 2 The object 'Company_CountryID_FK' is dependent on column 'CountryID'. Msg 4922, Level 16, State 9, Line 2 ALTER TABLE DROP COLUMN CountryID failed because one or more objects access this column. I have tried this, yet it does not seem to work: alter table company drop foreign key Company_CountryID_FK; alter table company drop column CountryID; What do I need to do to drop the CountryID column? Thanks.

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