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• Set default browser when debugging WPF?

  - by Albert Walker

  I'm using VWD Express 2008 to develop a WPF Browser Application. When I start debugging, it launches the XBAP in my default browser, which is Opera. Obviously, XBAPs don't work in Opera, so I have to repeatedly right-click on the document to open in IE. Is there any way to change the settings for PresentationHost.exe so that it always opens with IE? A registry setting, perhaps?

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• Rails Binary Stream support

  - by Craig Walker

  I'm going to be starting a project soon that requires support for large-ish binary files. I'd like to use Ruby on Rails for the webapp, but I'm concerned with the BLOB support. In my experience with other languages, frameworks, and databases, BLOBs are often overlooked and thus have poor, difficult, and/or buggy functionality. Does RoR spport BLOBs adequately? Are there any gotchas that creep up once you're already committed to Rails? BTW: I want to be using PostgreSQL and/or MySQL as the backend database. Obviously, BLOB support in the underlying database is important. For the moment, I want to avoid focusing on the DB's BLOB capabilities; I'm more interested in how Rails itself reacts. Ideally, Rails should be hiding the details of the database from me, and so I should be able to switch from one to the other. If this is not the case (ie: there's some problem with using Rails with a particular DB) then please do mention it. UPDATE: Also, I'm not just talking about ActiveRecord here. I'll need to handle binary files on the HTTP side (file upload effectively). That means getting access to the appropriate HTTP headers and streams via Rails. I've updated the question title and description to reflect this.

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• TSQL Help (SQL Server 2005)

  - by Mick Walker

  I have been playing around with a quite complex SQL Statement for a few days, and have gotten most of it working correctly. I am having trouble with one last part, and was wondering if anyone could shed some light on the issue, as I have no idea why it isnt working: INSERT INTO ExistingClientsAccounts_IMPORT SELECT DISTINCT cca.AccountID, cca.SKBranch, cca.SKAccount, cca.SKName, cca.SKBase, cca.SyncStatus, cca.SKCCY, cca.ClientType, cca.GFCID, cca.GFPID, cca.SyncInput, cca.SyncUpdate, cca.LastUpdatedBy, cca.Deleted, cca.Branch_Account, cca.AccountTypeID FROM ClientsAccounts AS cca INNER JOIN (SELECT DISTINCT ClientAccount, SKAccount, SKDesc, SKBase, SKBranch, ClientType, SKStatus, GFCID, GFPID, Account_Open_Date, Account_Update FROM ClientsAccounts_IMPORT) AS ccai ON cca.Branch_Account = ccai.ClientAccount Table definitions follow: CREATE TABLE [dbo].[ExistingClientsAccounts_IMPORT]( [AccountID] [int] NOT NULL, [SKBranch] [varchar](2) NOT NULL, [SKAccount] [varchar](12) NOT NULL, [SKName] [varchar](255) NULL, [SKBase] [varchar](16) NULL, [SyncStatus] [varchar](50) NULL, [SKCCY] [varchar](5) NULL, [ClientType] [varchar](50) NULL, [GFCID] [varchar](10) NULL, [GFPID] [varchar](10) NULL, [SyncInput] [smalldatetime] NULL, [SyncUpdate] [smalldatetime] NULL, [LastUpdatedBy] [varchar](50) NOT NULL, [Deleted] [tinyint] NOT NULL, [Branch_Account] [varchar](16) NOT NULL, [AccountTypeID] [int] NOT NULL ) ON [PRIMARY] CREATE TABLE [dbo].[ClientsAccounts_IMPORT]( [NEWClientIndex] [bigint] NOT NULL, [ClientGroup] [varchar](255) NOT NULL, [ClientAccount] [varchar](255) NOT NULL, [SKAccount] [varchar](255) NOT NULL, [SKDesc] [varchar](255) NOT NULL, [SKBase] [varchar](10) NULL, [SKBranch] [varchar](2) NOT NULL, [ClientType] [varchar](255) NOT NULL, [SKStatus] [varchar](255) NOT NULL, [GFCID] [varchar](255) NULL, [GFPID] [varchar](255) NULL, [Account_Open_Date] [smalldatetime] NULL, [Account_Update] [smalldatetime] NULL, [SKType] [varchar](255) NOT NULL ) ON [PRIMARY] The error message I get is: Msg 8152, Level 16, State 14, Line 1 String or binary data would be truncated. The statement has been terminated.

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• how i can check if this header exists ?

  - by Night Walker

  I am trying to check in my xml file if HeaderReportUnit exists, how i can check if this Header exists ? I am using 2.0 assembly , really thanks for help <?xml version="1.0" encoding="UTF-8" ?> - <HeadReportUnit> - <Title> <ModuleNum>ModuleNum</ModuleNum> <hdstSetPos>hdstSetPos</hdstSetPos> <hdstNzlName>hdstNzlName</hdstNzlName> <nzavSpecName>nzavSpecName</nzavSpecName> <nzavNzlDiameter>nzavNzlDiameter</nzavNzlDiameter> <nzavNzlSizeX>nzavNzlSizeX</nzavNzlSizeX> <nzavNzlSizeY>nzavNzlSizeY</nzavNzlSizeY> <nzavNzlType2>nzavNzlType2</nzavNzlType2> </Title> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 1</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 2</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 3</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 4</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 5</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 6</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 7</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 8</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 9</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</nzavNzlSizeX> <nzavNzlSizeY>0.6</nzavNzlSizeY> <nzavNzlType2>Standard</nzavNzlType2> </Unit> - <Unit> <ModuleNum>1</ModuleNum> <hdstSetPos>1- 10</hdstSetPos> <hdstNzlName>R07-007-070</hdstNzlName> <nzavSpecName>AA05700</nzavSpecName> <nzavNzlDiameter>0.0</nzavNzlDiameter> <nzavNzlSizeX>0.7</ nzavNzlSizeX

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• datetime command line argument in python 2.4

  - by Ike Walker

  I want to pass a datetime value into my python script on the command line. My first idea was to use optparse and pass the value in as a string, then use datetime.strptime to convert it to a datetime. This works fine on my machine (python 2.6), but I also need to run this script on machines that are running python 2.4, which doesn't have datetime.strptime. How can I pass the datetime value to the script in python 2.4? Here's the code I'm using in 2.6: parser = optparse.OptionParser() parser.add_option("-m", "--max_timestamp", dest="max_timestamp", help="only aggregate items older than MAX_TIMESTAMP", metavar="MAX_TIMESTAMP(YYYY-MM-DD HH24:MM)") options,args = parser.parse_args() if options.max_timestamp: # Try parsing the date argument try: max_timestamp = datetime.datetime.strptime(options.max_timestamp, "%Y-%m-%d %H:%M") except: print "Error parsing date input:",sys.exc_info() sys.exit(1)

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• AI navigation around a 2d map - Avoiding obstacles.

  - by Curt Walker

  Hey there, I know my question seems pretty vague but I can't think of a better way to put it so I'll start off by explaining what I'm trying to do. I'm currently working on a project whereby I've been given a map and I'm coding a 'Critter' that should be able to navigate it's way around the map, the critter has various other functions but are not relevant to the current question. The whole program and solution is being written in C#. I can control the speed of the critter, and retrieve it's current location on the map by returning it's current X and Y position, I can also set it's direction when it collides with the terrain that blocks it. The only problem I have is that I can't think of a way to intelligently navigate my way around the map, so far I've been basing it around what direction the critter is facing when it collides with the terrain, and this is in no way a good way of moving around the map! I'm not a games programmer, and this is for a software assignment, so I have no clue on AI techniques. All I am after is a push in the right direction on how I could go about getting this critter to find it's way around any map given to me. Here's an image of the map and critters to give you an idea of what i'm talking about. Here's a link to an image of what the maps and critters look like. Map and Critter image I'm in no way looking for anyone to give me a full solution, just a push in the general direction on map navigation. Thanks in advance!

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• Panel widget overlapping other contents in android

  - by walker

  I'm trying to utilize the Panel widget introduced in android-misc-widgets. It's been good so far. Now the problem is the sliding panel overlaps my top menu bar. For clarification look at the following screenshots. This is when I open panel using drag gesture (no problem here): This is when I open the panel with a single tap (look at the icons overlapping the top menu): There is one other problem, If there is any content inside the activity, opening the panel pushes that content out of the screen!

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• Compile a shared library statically

  - by Simon Walker

  I've got a shared library with some homemade functions, which I compile into my other programs, but I have to link the end program with all the libraries I have used to compile the static library. Here is an example: I have function foo in the library which requires a function from another library libbar.so. In my main program to use function foo I have to compile it with the -lbar flag. Is there a way I can compile my library statically so it includes all the required code from the other libraries, and I can compile my end program without needing the -lbar flag? Cheers

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• Modifying association arrays on cloned ActiveRecord objects

  - by Craig Walker

  I have an ActiveRecord model class Foo that has_many Bar. I want to clone a Foo (to get duplicates of most of its attributes) and then modify its Bar instances. This is a problem because cloned ActiveRecord instances share the same associated array; changes to one affect the other. f1 = Foo.new b = Bar.new f1.bars << b f2 = f1.clone f2.bars.includes? b # true f1.bars.clear f2.bars.includes? b # now false The real problem is that I can't detach the bars arrays from either Foo: f1.bars << b f2.bars.includes? b # true f2.bars = [] f2.bars.includes? b # now false f1.bars.includes? b # now also false If I could do that, then I could replace the Bars as I wanted to. However, any change to one Foo seems to affect the other.

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• Assemble an image browser side with JavaScript or Flash?

  - by Kris Walker

  Would it be possible to assemble an image on the browser by 'concatenating' other downloaded images together? The use case is this. The page will display 36 different tiles (small images). The user should be able to arrange those tiles into a 6 x 6 grid and save the resulting grid to disk as an image. The best solution would be to do it all in the browser without Flash. The next best solution would be to allow the user to create the grid in the browser with simple JavaScript drag and drop functionality and then send the coordinates to the server for image processing. The last solution would be to do it all in the browser with Flash. Is it even possible for Flash to create an image and then allow the user to save it from the browser? I am familiar with the Pixastic JavaScript library ( http://www.pixastic.com/ ), but it relies on getting image data to and from a canvas element which is not very well supported. What if I send the tile images to the browser as base64 encoded strings? Could I use JavaScript to create the 6 x 6 grid image? And if so, is there some way of allowing the user to get it onto disk without relying on the canvas element?

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• Sphinx autodoc is not automatic enough

  - by Cory Walker

  I'm trying to use Sphinx to document a 5,000+ line project in Python. It has about 7 base modules. As far as I know, In order to use autodoc I need to write code like this for each file in my project: .. automodule:: mods.set.tests :members: :show-inheritance: This is way too tedious because I have many files. It would be much easier if I could just specify that I wanted the 'mods' module to be documented. Sphinx could then recursively go through the module and make a page for each submodule. Is there A feature like this? If not I could write a script to make all the .rst files, but that would take up a lot of time.

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• SSIS - 'Execute SQL' Task and Record Sets

  - by Mick Walker

  Hi, How can I access a 'RecordSet' within a 'Execute SQL' task when using SSIS? I have looked at the parameter mapping options within the Execute SQL Task Editor and cannot find a type of object to allow me to pass the variable holding my record set to the task.

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• 2 Questions about nUnit.

  - by Night Walker

  Hi all I have 2 questions about functionality of nunit. What is the difference between [TestFixtureSetUp] and [SetUp] attributes ? I am writing a some class with tests and I see that half of my test functions need one setup, And an another half needs another set up. How can I have in one class two little different SetUp functions that are called with different functions Thanks.

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• Validations for a has_many/belongs_to relationship

  - by Craig Walker

  I have a Recipe model which has_many Ingredients (which in turn belongs_to Recipe). I want Ingredient to be existent dependent on Recipe; an Ingredient should never exist without a Recipe. I'm trying to enforce the presence of a valid Recipe ID in the Ingredient. I've been doing this with a validates :recipe, :presence => true (Rails 3) statement in Ingredient. This works fine if I save the Recipe before adding an Ingredient to it's ingredients collection. However, if I don't have explicit control over the saving (such as when I'm creating a Recipe and its Ingredients from a nested form) then I get an error: Ingredients recipe can't be blank I can get around this simply by dropping the presence validation on Ingredient.recipe. However, I don't particularly like this, as it means I'm working without a safety net. What is the best way to enforce existence-dependence in Rails? Things I'm considering (please comment on the wisdom of each): Adding a not-null constraint on the ingredients.recipe_id database column, and letting the database do the checking for me. A custom validation that somehow checks whether the Ingredient is in an unsaved recipe's ingredient collection (and thus can't have a recipe_id but is still considered valid).

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• Switching from one connectionstring to another when moving from development to cloud

  - by Nancy Walker

  Hello, I am working on a cloud application. When I test out the application on my computer I want to have my connection string set as follows in ServiceConfiguration.cscfg: <Setting name="DataConnectionString" value="UseDevelopmentStorage=true" /> When I publish to the cloud I need to have it set as follows: <Setting name="DataConnectionString" value="DefaultEndpointsProtocol=https;AccountName=xxxx;AccountKey=yyy" /> I keep going from one environment to the other and keep having to change the DataConnectionString. Is there a way that I can automate this? I looked around and can't see any examples but I'm sure some others have the same problem as me. Thanks, Nancy

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• Configuring PHP in IIS with Tomcat

  - by Silent Walker

  I have my Java site running under IIS 7. I need to install wordpress blog in it. I've installed and configured PHP in IIS. I have tested the PHP handler by creating a separate site, everything works fine, phpinfo() gives the desired output. However, I'm having problem running the PHP files inside my Java web application. I've put my test PHP file inside a folder called blog. When I access this folder in the browser as /mysite/blog I get a 404 page from my Java application. When I try to invoke the php page directly, http://mysite/blog/index.php, I get an unprocessed php page. I'm using isapi_handler for the reidrects. How do I tell my isapi_handler to ignore /blog folder? In my IIS handler mapping, *.php is mapped with Fast CGI. I'm not sure how to approach this problem and any help on this would be much appreciated. Thanks in advance.

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• How do I make the "back button" work with jQuery hide/show functions?

  - by Walker

  I'm looking for a way to append text to the url with jQuery so that the back button is not broken when a user loads new content with jQuery. For example, I have a three step form - the first step is (www.xyz.com/form-1). When the user clicks next step, jQuery slides in the next page. I would like that page to be (www.xyz.com/form-2). I know websites like hypem.com do this, I'm just looking for an elegant way to handle it.

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• resources at class library project

  - by Night Walker

  Hello I want to add some xml file as resource to my class library project . Any idea how to do so , and call it later? In windows application i would do it like ClassLibrary1.Properties.Resources.file.xml But here it didn't worked any idea how i do it here ?

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• Setting up httpd.conf / mod_rewrite to redirect to codeigniter?

  - by Walker

  I'm sorry to ask this here, as I'm sure the solution is fairly easy but for the life of my I can't setup httpd.conf on my apache server to automatically load the code_igniter files. Instead I'm having to go into the folder itself localhost/trunk/etc/etc until I get index.php - which messes with some of the relative paths (our backend coder is gone for the week so I can't ask him, but he has already setup the rewrite rules on our development server).

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• File comparison utility

  - by Night Walker

  Hello all I am looking for compare utility similar for "win merge" or "beyond compare" . That in addition for gui comparison will have api that i will be able to run on my files via my code and see if the files are the same or not and also use it in gui mode to show graphically the differences . Any recommendations ? thanks

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• nUnit error when loading dll what to do ?

  - by Night Walker

  Hello all I am trying to run my first nunit example , but i am getting some error when i am loading the dll file with the tests by nunit . the example taken from here link text --------------------------- Assembly Not Loaded --------------------------- System.ApplicationException : Invalid cache path: C:\Documents and Settings\pauly\Local Settings\Temp;C:\Windows\Microsoft.NET\Framework\V2.0.50727\nunit20\ShadowCopyCache\4344_634116012858505240 ----> System.NotSupportedException : The given path's format is not supported. For further information, use the Exception Details menu item. --------------------------- OK --------------------------- Any idea what is wrong here ? Thanks .

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• Which is faster when animating the UI: a Control or a Picture?

  - by Christopher Walker

  /I'm working with and testing on a computer that is built with the following: {1 GB RAM (now 1.5 GB), 1.7 GHz Intel Pentium Processor, ATI Mobility Radeon X600 GFX} I need scale / transform controls and make it flow smoothly. Currently I'm manipulating the size and location of a control every 24-33ms (30fps), ±3px. When I add a 'fade' effect to an image, it fades in and out smoothly, but it is only 25x25 px in size. The control is 450x75 px to 450x250 px in size. In 2D games such as Bejeweled 3, the sprites animate with no choppy animation. So as the title would suggest: which is easier/faster on the processor: animating a bitmap (rendering it to the parent control during animation) or animating the control it's self?

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• Is there any downside to using height: 0px; overflow: hidden; instead of display: none?

  - by Walker

  Is there any downside to using height: 0px; overflow: hidden; instead of display: none?

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• Setting background text colour of radio button

  - by Night Walker

  Hello all I want to set up the Background color of the text in my radio button . I have tried Background="Chocolate" , but it sets the color of the circle dot there . Any idea how i do that ? This is my current code <RadioButton Content=" MSSQL" TextBlock.Foreground="Black" HorizontalAlignment="Left" Height="Auto" Padding="0" Margin="15,15,0,0" Name="radioButton_MSSQL" VerticalAlignment="Top" Width="66" GroupName="DataBases" BorderBrush="DarkOrchid" IsChecked="True" />

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• Preventing ActiveRecord save() on an instance

  - by Craig Walker

  I have an ActiveRecord model object Foo; it represents a standard database row. I want to be able to display modified versions of instances of this object. I'd like to reuse the class itself, as it already has all the hooks & aspects I'll need. (For example: I already have a view that displays the appropriate attributes). Basically I want to clone the model instance, modify some of its properties, and feed it back to the caller (view, test, etc). I do not want these attribute modifications getting back into the database. However, I do want to include the id attribute in the cloned version, as it makes dealing with the route-helpers much easier. Thus, I plan on calling ActiveRecord::Base.clone(), manually setting the ID of the cloned instance, and then making the appropriate attribute changes to the new instance. This has me worried though; one save() on the modified instance and my original data will get clobbered. So, I'm looking to lock down the new instance so that it won't hurt anything else. I'm already planning on calling freeze() (on the understanding that this prevents further modification to the object, though the documentation isn't terribly clear). However, I don't see any obvious way to prevent a save(). What would be the best approach to achieving this?

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