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  • Storing date and time as epoch vs native datetime format in the database

    - by zakovyrya
    For most of my tasks I find it much easier to work with date and time in the epoch format: it's trivial to calculate timespan or determine if some event happened before or after another, I don't have to deal with time-zone issues if the data comes from different geographical sources, in case of scripting languages what I usually get from database when I request a datetime-typed column is a string that I need to parse in order to work with it. This list can go on, but for me in order to keep my code portable that's enough to ditch database's native datetime format and store date and time as integer. What do you guys think?

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  • Faking a dynamic schema in Core Data?

    - by Gouldsc
    From reading the Apple Docs on Core Data, I've learned that you should not use Core Data when you need a dynamic schema. If I wanted to provide the user the ability to create their own properties, in a core data model would it work if I created some "dummy" attributes like "custom decimal 1", "custom decimal 2", "custom text 1", "custom text 2" etc that the user could name and use for their own purposes? Obviously this won't work for relationships, but for simple properties it seems like a reasonable workaround. Will creating a bunch of dummy attributes on my entities that go unused by most users noticeably decrease performance for them? Have any of you tried something like this? Thanks!

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  • Creating a QuerySet based on a ManyToManyField in Django

    - by River Tam
    So I've got two classes; Picture and Tag that are as follows: class Tag(models.Model): pics = models.ManyToManyField('Picture', blank=True) name = models.CharField(max_length=30) # stuff omitted class Picture(models.Model): name = models.CharField(max_length=100) pub_date = models.DateTimeField('date published') tags = models.ManyToManyField('Tag', blank=True) content = models.ImageField(upload_to='instaton') #stuff omitted And what I'd like to do is get a queryset (for a ListView) given a tag name that contains the most recent X number of Pictures that are tagged as such. I've looked up very similar problems, but none of the responses make any sense to me at all. How would I go about creating this queryset?

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  • How to get use text columns in a trigger

    - by Jeremy
    I am trying to use an update trigger in sql 2000 so that when an update occurs, I insert a row into a history table, so I retain all history on a table: CREATE Trigger trUpdate_MyTable ON MyTable FOR UPDATE AS INSERT INTO [MyTableHistory] ( [AuditType] ,[MyTable_ID] ,[Inserted] ,[LastUpdated] ,[LastUpdatedBy] ,[Vendor_ID] ,[FromLocation] ,[FromUnit] ,[FromAddress] ,[FromCity] ,[FromProvince] ,[FromContactNumber] ,[Comment]) SELECT [AuditType] = 'U', D.* FROM deleted D JOIN inserted I ON I.[ID] = D.[ID] GO Of course, I get an error "Cannot use text, ntext, or image columns in the 'inserted' and 'deleted' tables." I tried joining to MyTable instead of deleted, but because the insert triger fires after the insert, it ends up inserting the new record into the history table, when I want the original record. How can I do this and still use text columns?

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  • Custom Display Form with Custom Workflow button

    - by Ifi
    I have created a new custom list form that will show 4 fields on the page from a Custom List called "Shipment". I have added Form Action button that I would like to run a custom action that is set inside of a Workflow. Currently, the form displays the fields for "Manifest Number", "Pickup Location", "Delivery Location", & "Scheduled Pickup Time". When the user clicks the Form Action button, what I want the Workflow to do is go to the ID field of the displayed content in the Form and change the value of the "Picked Up" column from No to Yes. The problem I am having is passing the ID of the displayed information from the Form to the Workflow as a variable. I can get the "Picked Up" column to update if I specify the value in the "Update List Item" window under the "Find the List Item" section, but I cannot figure out how to do this dynamically from the Form

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  • Is there a literal notation for decimal in IronPython?

    - by jeroenh
    suppose I have the following IronPython script: def Calculate(input): return input * 1.21 When called from C# with a decimal, this function returns a double: var python = Python.CreateRuntime(); dynamic engine = python.UseFile("mypythonscript.py") decimal input = 100M; // input is of type Decimal // next line throws RuntimeBinderException: // "cannot implicitly convert double to decimal" decimal result = engine.Calculate(input); I seem to have two options: First, I could cast at the C# side: seems like a no-go as I might loose precision. decimal result = (decimal)engine.Calculate(input); Second option is to use System.Decimal in the python script: works, but pollutes the script, which should be understandable for my users... import clr import System def CalculateVAT(amount): return amount * System.Decimal(1.21) Is there a way to tell the DLR that the number 1.21 should be interpreted as a Decimal, much like I would use the '1.21M' notation in C#?

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  • "os x" + octave + Miscellaneous Package: install errors

    - by Mike Briggs
    Trying to install the Miscellaneous Package into Octave, I get this string of errors: octave-3.2.3:17 pkg install miscellaneous-1.0.9.tar.gz configure: error: in /var/folders/0o/0ox7a-rlFVGd8pZnuF96sE+++TM/-Tmp-/oct-zTlMUh/miscellaneous-1.0.9/src': configure: error: C compiler cannot create executables See config.log' for more details. the configure script returned the following error: checking for gcc... gcc checking for C compiler default output file name... error: called from `pkgconfigure_make' in file /Applications/Octave.app/Contents/Resources/share/octave/3.2.3/m/pkg/pkg.m near line 1240, column 2 error: called from: error: /Applications/Octave.app/Contents/Resources/share/octave/3.2.3/m/pkg/pkg.m at line 714, column 5 error: /Applications/Octave.app/Contents/Resources/share/octave/3.2.3/m/pkg/pkg.m at line 287, column 7 What is this trying to tell me? Where should I go? Mike Briggs

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  • GUI freezes when executing def function. Use threads?

    - by wtzolt
    Hi, I've made a small program which has 2 buttons and each does certain thing. Here's a simplified version of the code. Thing is it works fine except that the button freezes and stays in a clicked position and whole GUI freezes until the command is completed. As far as I know threads would be best to use in this situation, but I have no idea how to implement it in this example. I use glade and pygtk for gui. def do1: t = 2 #do something time.sleep(t) #do something time.sleep(t) def do2: t = 3 #do something time.sleep(t) #do something time.sleep(t) class we: wTree = None def __init__( self ): self.wTree = gtk.glade.XML( "ui.glade" ) dic = { "on_buttonSone" : self.sone, "on_buttonStwo" : self.stwo, } self.wTree.signal_autoconnect( dic ) gtk.main() def sone(self, widget): i = 0 while i < 3: t = 1 #do something i += 1 time.sleep(t) self.wTree.get_widget("entryResult").set_text("Done.") def stwo(self, widget): start = time.clock() array = ['A','B'] adict = {'A':do1,'B':do2} for f in array: adict[f]() end = time.clock() elapsed = end - start gg = round(elapsed,2) self.wTree.get_widget("entryResult").set_text(str(gg)) go=we()

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  • MS CRM - getting the field that caused a form save

    - by CraigF
    I have a MS CRM 4 form where when certain fields are changed, I need those fields to be written to an excel sheet. So, I edited the form field onchange event to call crmform.save() which triggers a plugin to run that writes the field value to a named range (1 cell) of an excel sheet. However, I don't know which field caused the save. Is there a way to get that information? (Not all fields on the form need to go to the excel sheet) If I use this: DynamicEntity target = (DynamicEntity)Context.InputParameters[ParameterName.Target]; I can look at specific fields, but I have no way of knowing which ones changed. Any suggestions?

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  • Visualizing an AST created with ANTLR (in a .Net environment)

    - by Benjamin Podszun
    Hi there. For a pet project I started to fiddle with ANTLR. After following some tutorials I'm now trying to create the grammar for my very own language and to generate an AST. For now I'm messing around in ANTLRWorks mostly, but now that I have validated that the parse tree seems to be fine I'd like to (iteratively, because I'm still learning and still need to make some decisions regarding the final structure of the tree) create the AST. It seems that antlrworks won't visualize it (or at least not using the "Interpreter" feature, Debug's not working on any of my machines). Bottom line: Is the only way to visualize the AST the manual way, traversing/showing it or printing the tree in string representation to a console? What I'm looking for is a simple way to go from input, grammar - visual AST representation a la the "Interpreter" feature of ANTLRWorks. Any ideas?

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  • Compact Framework best practices: Building a GUI

    - by Ciaran
    I'm maintaining a Windows CE app built with the .NET Framework that has about 45 forms. There are 5 'sections' which lead to the function you want. The application is 100% full screen and it is important that it can't be minimized. Since there are so many forms, it's difficult to keep track of which form should be displayed after one is closed. For this, I'm setting the form owner property before showing it, and showing the owner when closing it. I've also been advised that it is best to instantiate all forms when the application loads, and not dispose them to save processing time. I'm not sure about this. My question is, what is the best way to go about showing, hiding forms where you want any 1 form to be in front, full screen all time?

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  • Am I crazy? (How) should I create a jQuery content editor?

    - by Brendon Muir
    Ok, so I created a CMS mainly aimed at Primary Schools. It's getting fairly popular in New Zealand but the one thing I hate with a passion is the largely bad quality of in browser WYSIWYG editors. I've been using KTML (made by InterAKT which was purchased by Adobe a few years ago). In my opinion this editor does a lot of great things (image editing/management, thumbnailing and pretty good content editing). Unfortunately time has had its nasty way with this product and new browsers are beginning to break features and generally degrade the performance of this tool. It's also quite scary basing my livelihood on a defunct product! I've been hunting, in fact I regularly hunt around to see if anything has changed in the WYSIWYG arena. The closest thing I've seen that excites me is the WYSIHAT framework, but they've decided to ignore a pretty relevant editing paradigm which I'm going to outline below. This is the idea for my proposed editor, and I don't know of any existing products that can do this properly: Right, so the traditional model for editing let's say a Page in a CMS is to log into a 'back end' and click edit on the page. This will then load another screen with the editor in it and perhaps a few other fields. More advanced CMS's will maybe have several editing boxes that are for different portions of the page. Anyway, the big problem with this way of doing things is that the user is editing a document outside of the final context it will appear in. In the simplest terms, this means the page template. Many things can be wrong, e.g. the with of the editing area might be different to the width of the actual template area. The height is nearly always fixed because existing editors always seem to use IFRAMES for backward compatibility. And there are plenty of other beefs which I'm sure you're quite aware of if you're in this development area. Here's my editor utopia: You click 'Edit Page': The actual page (with its actual template) displays. Portions of the page have been marked as editable via a class name. You click on one of these areas (in my case it'd just be the big 'body' area in the middle of the template) and a editing bar drops down from the top of the screen with all your standard controls (bold, italic, insert image etc...). Iframes are never used, instead we rely on setting contentEditable to true on the DIV's in question. Firefox 2 and IE6 can go away, let's move on. You can edit the page knowing exactly how it will look when you save it. Because all the styles for this template are loaded, your headings will look correct, everything will be just dandy. Is this such a radical concept? Why are we still content with TinyMCE and that other editor that is too embarrassing to use because it sounds like a swear word!? Let's face the facts: I'm a JavaScript novice. I did once play around in this area using the Javascript Anthology from SitePoint as a guide. It was quite a cool learning experience, but they of course used the IFRAME to make their lives easier. I tried to go a different route and just use contentEditable and even tried to sidestep the native content editing routines (execCommand) and instead wrote my own. They kind of worked but there were always issues. Now we have jQuery, and a few libraries that abstract things like IE's lack of Range support. I'm wondering, am I crazy, or is it actually a good idea to try and build an editor around this editing paradigm using jQuery and relevant plugins to make the job easier? My actual questions: Where would you start? What plugins do you know of that would help the most? Is it worth it, or is there a magical project that already exists that I should join in on? What are the biggest hurdles to overcome in a project like this? Am I crazy? I hope this question has been posted on the right board. I figured it is a technical question as I'm wanting to know specific hurdles and pitfalls to watch out for and also if it is technically feasible with todays technology. Looking forward to hearing peoples thoughts and opinions.

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  • JPEG image with alpha channel on website

    - by mikez302
    I would like to make a JPEG image file with some pixels that are partially transparent or fully transparent, similar to a PNG file with an alpha channel. Is this possible? If so, how would I go about doing this? I would like to use the image on a website. If I try to do this, would it work in any or all of the popular browsers (IE 7+, Firefox, Safari)? Assuming it is possible, will it just work, or are there any tricks or hacks required to make it work?

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  • Installing JavaFX 2.0 in Eclipse Juno for Mac

    - by Josh
    I'm running Mac OS X 10.6.x (Snow Leopard) right now, so I'm pretty sure that there could be some issues with supported systems, but I'm trying to install JavaFX 2.0 (or 2.1.x) in Eclipse Juno for Java EE (version 3.8). I have already installed the e(fx)clipse plugin, but I'm not sure if I'm downloading the right JavaFX .zip file from the Oracle website. I downloaded the JavaFX 2.2 beta release because it seemed to be the only release available for OS X, but I could be wrong. Once I download this archive, I'm not exactly what to do with it/where to place it so that Eclipse recognizes it as the JavaFX 2.2 SDK. I know that I have to go into preferences and set the location of the SDK file, but there doesn't seem to be any selectable .jar file or folder to set it to. Am I doing something wrong here? Any help is appreciated. Edit: I worked around the issue by setting the SDK location to the location of the downloaded JavaFX 2.2 SDK in the JavaFX section in the preferences tree.

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  • tradingeye JS error.

    - by Kyle Hudson
    Hi Guys, Can anyone help me, I have a IE javascript issue. I am really stuck and the client has just brought it to my attention. The site is http://www.fleurofengland.com/, its the check out page so if you would be kind enough to goto the site, add anything to your basket and go through to the checkout. The problem is when you get to the checkout page (https://www.fleurofengland.com/eaction/checkout.billing/), under the 'Billing and Delivery Details' heading you will see a dropdown called country. Below that is another dropdown called County/State, this dropdown is meant to be populated from the values of the 'country' one above however its not working. Please help or suggest a fix. Thanks in Advance, Kyle

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  • Pylons/Routes Did url_for() change within templates?

    - by Charles Merram
    I'm getting an error: GenerationException: url_for could not generate URL. Called with args: () {} from this line of a mako template: <p>Your url is ${h.url_for()}</p> Over in my helpers.py, I do have: from routes import url_for Looking at the Routes-1.12.1-py2.6.egg/routes/util.py, I seem to go wrong about line it calls _screenargs(). This is simple functionality from the Pylons book. What silly thing am I doing wrong? Was there a new url_current()? Where?

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  • Ninject with MembershipProvider | RoleProvider

    - by DVark
    I'm using ninject as my IoC and I wrote a role provider as follows: public class BasicRoleProvider : RoleProvider { private IAuthenticationService authenticationService; public BasicRoleProvider(IAuthenticationService authenticationService) { if (authenticationService == null) throw new ArgumentNullException("authenticationService"); this.authenticationService = authenticationService; } /* Other methods here */ } I read that Provider classes get instantiated before ninject gets to inject the instance. How do I go around this? I currently have this ninject code: Bind<RoleProvider>().To<BasicRoleProvider>().InRequestScope(); From this answer here. If you mark your dependencies with [Inject] for your properties in your provider class, you can call kernel.Inject(MemberShip.Provider) - this will assign all dependencies to your properties. I do not understand this.

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  • Asp.net MVC Label For

    - by Jaimal Chohan
    I have the following <label for="Forename">Forename</label> <%= Html.TextBoxFor(m => m.Customer.Name.Forename) %> the problem with this is that this is rendered as <label for="AddressLine1">Address Line 1</label> <input type="text" value="" name="Customer.Address.Thoroughfare" id="Customer_Address_Thoroughfare"> not what I want ofc. I would like an extension to render the label correctly (i.e. with the for="" attribute having the value of the input id), is there anything in MVC 2 that does this nativly before I go writing my own extension?

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  • Unaccounted for database size

    - by Nazadus
    I currently have a database that is 20GB in size. I've run a few scripts which show on each tables size (and other incredibly useful information such as index stuff) and the biggest table is 1.1 million records which takes up 150MB of data. We have less than 50 tables most of which take up less than 1MB of data. After looking at the size of each table I don't understand why the database shouldn't be 1GB in size after a shrink. The amount of available free space that SqlServer (2005) reports is 0%. The log mode is set to simple. At this point my main concern is I feel like I have 19GB of unaccounted for used space. Is there something else I should look at? Normally I wouldn't care and would make this a passive research project except this particular situation calls for us to do a backup and restore on a weekly basis to put a copy on a satellite (which has no internet, so it must be done manually). I'd much rather copy 1GB (or even if it were down to 5GB!) than 20GB of data each week. sp_spaceused reports the following: Navigator-Production 19184.56 MB 3.02 MB And the second part of it: 19640872 KB 19512112 KB 108184 KB 20576 KB while I've found a few other scripts (such as the one from two of the server database size questions here, they all report the same information either found above or below). The script I am using is from SqlTeam. Here is the header info: * BigTables.sql * Bill Graziano (SQLTeam.com) * graz@<email removed> * v1.11 The top few tables show this (table, rows, reserved space, data, index, unused, etc): Activity 1143639 131 MB 89 MB 41768 KB 1648 KB 46% 1% EventAttendance 883261 90 MB 58 MB 32264 KB 328 KB 54% 0% Person 113437 31 MB 15 MB 15752 KB 912 KB 103% 3% HouseholdMember 113443 12 MB 6 MB 5224 KB 432 KB 82% 4% PostalAddress 48870 8 MB 6 MB 2200 KB 280 KB 36% 3% The rest of the tables are either the same in size or smaller. No more than 50 tables. Update 1: - All tables use unique identifiers. Usually an int incremented by 1 per row. I've also re-indexed everything. I ran the dbcc shrink command as well as updating the usage before and after. And over and over. An interesting thing I found is that when I restarted the server and confirmed no one was using it (and no maintenance procs are running, this is a very new application -- under a week old) and when I went to run the shrink, every now and then it would say something about data changed. Googling yielded too few useful answers with the obvious not applying (it was 1am and I disconnected everyone, so it seems impossible that was really the case). The data was migrated via C# code which basically looked at another server and brought things over. The quantity of deletes, at this point in time, are probably under 50k in rows. Even if those rows were the biggest rows, that wouldn't be more than 100M I would imagine. When I go to shrink via the GUI it reports 0% available to shrink, indicating that I've already gotten it as small as it thinks it can go. Update 2: sp_spaceused 'Activity' yields this (which seems right on the money): Activity 1143639 134488 KB 91072 KB 41768 KB 1648 KB Fill factor was 90. All primary keys are ints. Here is the command I used to 'updateusage': DBCC UPDATEUSAGE(0); Update 3: Per Edosoft's request: Image 111975 2407773 19262184 It appears as though the image table believes it's the 19GB portion. I don't understand what this means though. Is it really 19GB or is it misrepresented? Update 4: Talking to a co-worker and I found out that it's because of the pages, as someone else here has also state the potential for that. The only index on the image table is a clustered PK. Is this something I can fix or do I just have to deal with it? The regular script shows the Image table to be 6MB in size. Update 5: I think I'm just going to have to deal with it after further research. The images have been resized to be roughly 2-5KB each and on a normal file system doesn't consume much space but on SqlServer it seems to consume considerably more. The real answer, in the long run, will likely be separating that table in to another partition or something similar.

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  • MS Access Print Report using VBA

    - by LanguaFlash
    I have a very VBA intensive report. When I preview it everything is great but when I print it after previewing things go wacky. I have spent many hours narrowing down the possibilities and I have conclude with a certain level of confidence that it is a but in MS Access. Up to this point my method for printing reports was to open the report using docmd.openreport "report". I then use the docmd.printout command so that I can set the page range, collation etc. Is there a way to print a report directly and still be able to set options like page rage, collate etc without doing a preview first? Thanks, Jeff

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  • How to manage a large dataset using Spring MySQL and RowCallbackHandler

    - by rmarimon
    I'm trying to go over each row of a table in MySQL using Spring and a JdbcTemplate. If I'm not mistaken this should be as simple as: JdbcTemplate template = new JdbcTemplate(datasource); template.setFetchSize(1); // template.setFetchSize(Integer.MIN_VALUE) does not work either template.query("SELECT * FROM cdr", new RowCallbackHandler() { public void processRow(ResultSet rs) throws SQLException { System.out.println(rs.getString("src")); } }); I get an OutOfMemoryError because it is trying to read the whole thing. Any ideas?

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  • Re-using unit tests for models using STI

    - by TenJack
    I have a number of models that use STI and I would like to use the same unit test to test each model. For example, I have: class RegularList < List class OtherList < List class ListTest < ActiveSupport::TestCase fixtures :lists def test_word_count list = lists(:regular_list) assert_equal(0, list.count) end end How would I go about using the test_word_count test for the OtherList model. The test is much longer so I would rather not have to retype it for each model. Thanks.

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  • How to Unload a popped view controller?

    - by RexOnRoids
    Using a navigation based view hierarchy. I have a root view controller, and multiple view controllers that branch out from the same when a button is pressed. When a user presses the back button on the UINavigationBar, the current viewcontroller is popped and the display animates back to the rootviewcontroller. The problem is, I want the viewcontrollers to UNLOAD whenever they are popped. Seems like they are not unloading because when I go back to them they are still in the state they were when they were popped. How do I unload the viewcontrollers after navigating back to the rootviewcontroller?

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  • Modifying setup file with PHP

    - by Paul Lammertsma
    I have an application that needs branding when downloaded in certain continents. When installed in North America, for instance, the application, when run, displays a different logo and company name than in Europe. The setup file is provided through a PHP script. Presently there is a Inno Setup executable for Windows and a DMG for Mac OS X. I have seen that when downloading Google Chrome, you can specify whether or not it should send usage statistics. A brief look at the JavaScript that controls it reveals that this is simply sent back to the server with &usagestats=0 or &usagestats=1. How would I go about influencing the installation based upon settings specified via the PHP download page?

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  • Which collection interface should I use in .NET for COM-interop?

    - by jhominal
    That is a followup from my previous question, but you don't need to read it to understand that one. I'm designing an interface in .NET that would be consumed from COM applications (mainly VB6, but Visual C++ 6 is also a possibility) and I would like to use Collection types as argument and return types for the methods in the interface. Questions: What happens to the VB6 built-in collection types (arrays, collections, dictionaries) when they go through interop? My current guess is that: arrays - System.Array collections - Microsoft.VisualBasic.Collection dictionaries - System.Collections.Hashtable Is that correct? Which interfaces should I use as return types? IEnumerable, ICollection, IList, IDictionary? Would I be able to do a For Each in VB6 to iterate over these interfaces? Should I use the generic or non-generic variants of the interfaces?

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