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• Database design for summarized data

  - by holden

  I have a new table I'm going to add to a bunch of other summarized data, basically to take some of the load off by calculating weekly avgs. My question is whether I would be better off with one model over the other. One model with days of the week as a column with an additional column for price or another model as a series of fields for the DOW each taking a price. I'd like to know which would save me in speed and/or headaches? Or at least the trade off. IE. ID OBJECT_ID MON TUE WED THU FRI SAT SUN SOURCE OR ID OBJECT_ID DAYOFWEEK PRICE SOURCE

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• Communicate with the local machine from a web page

  - by Earlz

  Hello. We have a web application. There are physical devices that we need to be able to communicate with, and we have access to all of our clients computers to install whatever software we need. Now, for the question: Is there a way to make this browser-agnostic? As in, not requiring ActiveX controls? One of my ideas was to install a custom made webserver on each client and then have javascript on our webpage that communicates with that webserver. This could be done by the same way that http://earlz.biz.tm javascript can access subdomains assigned to 127.0.0.1 such as http://loopback.earlz.biz.tm The problem with this of course is that the client's custom made webserver would be forced to run on port 80(which will have conflicts at least sometimes), or we would have to use a nonstandard port for our web application, which is quite undesirable. Does anyone else have ideas on how to do this?

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• CSS layout with 2 columns, taking up all width of browser, where left column can collapse

  - by Matt Dawdy

  I want to have a 2 column layout, and have the left column able to be 200 px at first, and have a "shrink" button to shrink it down to 10px, and have the right column expand to fill all the rest of the available space. Then if they click on the "show" button (which will be all they see in the now 10px wide left column) have the left grow back to 200px and have the right column shrink by that amount. I can't figure out how to make the right column grown and shrink without knowing the exact width of the window. I hope this makes sense, and I really hope someone can point me in the right direction. Browser requirements are IE8, FF3.6, Safari, and Chrome, so in theory I can use some advanced CSS techniques. At least I don't have to support IE6.

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• Android daemon process

  - by J Andy

  Is it possible (without violating any licenses) to write a native C/C++ application on top of the Android OS and make it run as a daemon process? There are already several daemon process' running which one can see with the 'ps' command, the legal part concerns me the most. And also the lack of documentation on how to exactly do this. For the writing part, I guess one could use basic Linux programming concepts, since Android supports at least to some level the standard Posix API. To make it run as the phone boots, some modifications is of course required in init as well. I have no plans to have this app in the Android Market, so installing it manually to the phone is not a problem. As long as it does not require re-compiling the whole OS or kernel. I really appreciate all info on this topic, since there's isn't much available. Thanks.

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• Importing AutoCAD/Solidworks drawings/objects into winforms?

  - by Dinoo

  Has anybody done anything like that? I need to import 3d objects, done in either AutoCAD or Solidworks, and draw them into a windows form. I only need the object to be viewed in 3D and moved around - no manipulation required. I am assuming I will need 2 libraries at least, one for a very simple 3D engine, and one to actually get what I need from the CAD/SW files. Autodesk has a SDK available for developing AutoCAD plugins using .NET, but I am not sure if you can use it the other way around - loading files into the .NET app. Any help, links, and ideas are appreciated.

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• index help for a MySQL query using greater-than operator and ORDER BY

  - by Jaymon

  I have a table with at least a couple million rows and a schema of all integers that looks roughly like this: start stop first_user_id second_user_id The rows get pulled using the following queries: SELECT * FROM tbl_name WHERE stop >= M AND first_user_id=N AND second_user_id=N ORDER BY start ASC SELECT * FROM tbl_name WHERE stop >= M AND first_user_id=N ORDER BY start ASC I cannot figure out the best indexes to speed up these queries. The problem seems to be the ORDER BY because when I take that out the queries are fast. I've tried all different types of indexes using the standard index format: ALTER TABLE tbl_name ADD INDEX index_name (index_col_1,index_col_2,...) And none of them seem to speed up the queries. Does anyone have any idea what index would work? Also, should I be trying a different type of index? I can't guarantee the uniqueness of each row so I've avoided UNIQUE indexes. Any guidance/help would be appreciated. Thanks!

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• Why not port Linux kernel to Common Lisp?

  - by rplevy

  Conventional wisdom states that OS kernels must be written in C in order to achieve the necessary levels of performance. This has been the justification for not using more expressive high level languages. However, for a few years now implementations of Common Lisp such as SBCL have proven to be just as performant as C. What then are the arguments against redoing the kernel in a powerfully expressive language, namely Common Lisp? I don't think anyone (at least anyone who knows what they are talking about) could argue against the fact that the benefits in transparency and readability would be tremendous, not to mention all the things that can't be done in C that can be done in Lisp, but there may be implementation details that would make this a bad idea.

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• Reading a plist utf-8 value as utf-16

  - by ennuikiller

  I'm working on an iphone app that needs to display superscripts and subscripts. I'm using a picker to read in data from a plist but the unicode values aren't being displayed corretly in the pickerview. Subscripts and superscripts are not being recognized. I'm assuming this is due to the encoding of the plist as utf-8, so the question is how do a convert a plist string encoding from utf-8 to utf-16 ? Just a little more elaboration: If I do this it displays properly at least in a textfield: NSString *equation = @"x\u00B2 + y\u00B2 = z\u00B2" However if I define the same string in a plist and try to read it in and assign it to a string and display it on a pickerview it just displays the the encoding and not the superscripts. @Matt: thanks for your suggestion the unicode is being escaped that is \u00B2 = \u00B2. Googling for "escaped values in plists" returned no useful results, and I haven't been able to use the keyboard cmd-ctrl-shift-+ to work. Any further suggestions would be greatly appreciated!!

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• DAL without web2py

  - by Jay

  I am using web2py to power my web site. I decided to use the web2py DAL for a long running program that runs behind the site. This program does not seem to update its data or the database (sometimes). from gluon.sql import * from gluon.sql import SQLDB from locdb import * # contains # db = SQLDB("mysql://user/pw@localhost/mydb", pool_size=10) # db.define_table('orders', Field('status', 'integer'), Field('item', 'string'), # migrate='orders.table') orderid = 20 # there is row with id == 20 in table orders #when I do db(db.orders.id==orderid).update(status=6703) db.commit() It does not update the database, and a select on orders with this id, shows the correct data. In some circumstances a "db.rollback()" after a commit seems to help. Very strange to say the least. Have you seen this, more importantly do you know the solution? Jay

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• What resolution should my Android splash screens be?

  - by Dan Fabulich

  I'm creating a splash screen that will display while my Android application loads. I'd like to create it at the correct size so Android won't auto-scale it up or down to fit the screen. But there are at least three important screen sizes I care about: 320x480, 480x854 (Droid), and 480x800 (Nexus One). I've read the documentation on supporting multiple screen sizes, but I still don't see how I'm supposed to configure different splash screens for Droid/Nexus one (they're both "hdpi" resources as far as Android is concerned), and I don't know exactly how large my splash screen should be in any case. (How tall is the OS title bar/menu in Droid? N1?) What size should I make these images, and how do I tell Android to use the correct size on a given screen?

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• Has MSDN Dropped Compact Framework already?

  - by Vaccano

  MSDN Documentation used to indicate if a method was supported on the compact framework. But now I can't find that info anymore. I know that Microsoft has dropped Compact Framework like a hot potato, but I did not know that they had ripped it out of the docs. As examples of what I am talking about here is a link to the Graphics Members. They used to show which methods were supported in the Compact Framework next to each method. Now they do not. Also, here are two methods: Graphics.MeasureString Method (String, Font, Int32) Graphics.MeasureString Method (String, Font) The first is not supported in the compact framework, but the second is. But the docs don't tell you that (at least not at the bottom where they used to). Am I missing something? Is there a way to still get this info?

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• Identify in a unit test if Jetbrains IntelliJ IDEA 8 or 9 is running

  - by Ran Biron

  I need to know, in a context of a unit test, if Jetbrains IntelliJ idea is the test initiator and if it is, which version is running (or at least if it's "9" or earlier). I don't mind doing dirty tricks (reflection, filesystem, environment...) but I do need this to work "out-of-the-box" (without each developer having to setup something special). I've tried some reflection but couldn't find a unique identifier I could latch onto. Any idea? Oh - the language is Java.

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• Javascript Back Button - Stop back from closing window

  - by Evan

  How do I get the "back" button seen in my demo to NOT close the browser window? If this can't be prevented, then at least provide them with a confirmation box alerting them the window is trying to close and ask them if they want to continue. I'm using a javascript back button link and forward button link to control the user's history inside a modal/lightbox window. Here's a demo of what is happening... When you begin, the second page will have a link to the modal window, so click that, then click the "back" button in the window as it will take you BACK to the start page. That's the issue I'm having as I don't want this to happen. http://www.apus.edu/_test/evan/modal/start.htm <a href="javascript:history.go(-1)">Back Button</a> <a href="javascript:history.go(1)">Foward Button</a>

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• Autofilter with multi-columns in Excel VBA

  - by tlpd

  I need to use VBA to filter some information in excel. As I have an excel with 20 columns, now want to use AutoFilter function to search in some columns if it contains one value (Ex: ID010). what i want is it'll display all rows that have at least one column contains ID010. Currently, i use the below code to search. However, it could not find any data because all the criteria seem to tie together using AND operator ' Search range, [argIn]---> search value With [D5:M65536] .AutoFilter Field:=4, Criteria1:=argIn .AutoFilter Field:=5, Criteria1:=argIn .AutoFilter Field:=6, Criteria1:=argIn .AutoFilter Field:=7, Criteria1:=argIn .AutoFilter Field:=8, Criteria1:=argIn .AutoFilter Field:=9, Criteria1:=argIn .AutoFilter Field:=10, Criteria1:=argIn .AutoFilter Field:=11, Criteria1:=argIn .AutoFilter Field:=12, Criteria1:=argIn .AutoFilter Field:=13, Criteria1:=argIn End With I wonder if anyone could give me some hints or examples how to handle this issue. Thank you in advance.

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• What is the correct Qt idiom for exposing signals/slots of contained widgets?

  - by Tyler McHenry

  Suppose I have a MyWidget which contains a MySubWidget, e.g. a custom widget that contains a text field or something. I want other classes to be able to connect to signals and slots exposed by the contained MySubWidget instance. Is the conventional way to do this: Expose a pointer to the MySubWidget instance through a subWidget() method in MyWidget Duplicate the signals and slots of MySubWidget in the MyWidget class and write "forwarding" code Something else? Choice 1 seems like the least code, but it also sort of breaks encapsulation, since now other classes know what the contained widgets of MyWidget are and might become dependent on their functionality. Choice 2 seems like it keeps encapsulation, but it's a lot of seemingly redundant and potentially convoluted code that kind of messes up the elegance of the whole signals and slots system. What is normally done in this situation?

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• Is the switch to Dvorak worth it?

  - by Kevin Weil

  To those who were experienced ( 70 WPM, say) typists before the switch to Dvorak -- were you faster after switching? There are a couple good SO threads on Dvorak, but they are more on how to learn or reduction in typing pain than speed before/after. I know it will take me 1-2 months to feel comfortable, but I want to know if I should expect to be faster afterward. I am a programmer and type maybe 90-110 WPM on QWERTY. EDIT: I agree that coding is not typically IO-bound, and that a minimum typing speed is sufficient. This is half from curiosity, but it will be an undertaking to achieve QWERTY parity, so I want to know if I should at least expect some asymptotic improvement.

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• Reputable TabletPC vendors

  - by SnOrfus

  I'm developing software for tablet pcs and so far I've used some lenovo's (x41), some toshiba's (portege m200) and some gateways (M275). Granted: the machines we've gotten have predominantly been refurbs, but they're failing 80-90% of the time. Part of the reason that they're failing is users inevitably dropping them, so I'm looking at potentially some rugged tablet pcs. The problem that I'm running into is that Current tablet pcs are high spec (much higher than I'm looking for at least) The rugged tablet manufacturer space seems to be filled with lots of small companies that I don't trust yet. I'm looking for tablet PCs (keyboard or no) that can support: XP tpc (optional win 7) single core 1.5-2ghz 1gb ram wifi optional gsm optional gps very optional vehicle docking solutions The budget I've got is tight (but slightly flexible - So are there any reputable tablet pc vendors out there that can do this.

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• Best way of implementing DropDownList in ASP.NET MVC 2?

  - by Kelsey

  I am trying to understand the best way of implementing a DropDownList in ASP.NET MVC 2 using the DropDownListFor helper. This is a multi-part question. First, what is the best way to pass the list data to the view? Pass the list in your model with a SelectList property that contains the data Pass the list in via ViewData How do I get a blank value in the DropDownList? Should I build it into the SelectList when I am creating it or is there some other means to tell the helper to auto create an empty value? Lastly, if for some reason there is a server side error and I need to redisplay the screen with the DropDownList, do I need to fetch the list values again to pass into the view model? This data is not maintained between posts (at least not when I pass it via my view model) so I was going to just fetch it again (it's cached). Am I going about this correctly?

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• Wrapping/warping a CALayer/UIView (or OpenGL) in 3D (iPhone)

  - by jbrennan

  I've got a UIView (and thus a CALayer) which I'm trying to warp or bend slightly in 3D space. That is, imagine my UIView is a flat label which I want to partially wrap around a beer bottle (not 360 degrees around, just on one "side"). I figured this would be possible by applying a transform to the view's layer, but as far as I can tell, this transform is limited to rotation, scale and translation of the layer uniformly. I could be wrong here, as my linear algebra is foggy at this point, to say the least. How can I achieve this?

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• Can a .Net 1.1 client call a .Net 2.0 web service? If so, how?

  - by Colin

  We have finally upgraded our web services from .Net 1.1 to .Net 2.0/3.5. One of the clients that calls these web services is run as a windows service. It is probable that the server will be upgraded at customer sites and the windows service will not (at least for some time). Is it possible to massage my .Net 2.0 web services so they will correctly service the calls from the .Net 1.1 client? It doesn't happen in my test environment and I can't find any docs about it online. Thanks for your help, -colin-

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• Receiving "Path 'OPTIONS' is forbidden." Exception in ASP.NET website

  - by Greg

  I am getting the error "Path 'OPTIONS' is forbidden." since we moved our website over to a new server setup. I am unable to recreate the error but I am receiving emails for this exception at least a few times a day. Any ideas what could be causing this and how I can fix it? EDIT: Stack Trace: at System.Web.HttpMethodNotAllowedHandler.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) There are no directories or files named OPTIONS and I believe all permissions are correct. I am finding some information about a possible link to EXCEL getting data from the webserver, but nothing that full explains how or what is happening yet. EDIT AGAIN: Seems this has to do with Excel files opening in Internet Explorer..

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• After making a call programatically, my android app crashes

  - by Casidiablo

  Hello! The title explains all... I have this snippet of code in my application: String url = createTelUrl("3112007315"); Intent intent = new Intent(Intent.ACTION_CALL); intent.setData(Uri.parse(url)); context.startActivity(intent); It does make a call, but once the call ends, my application crashes. I'd like to return to my application once the call has finished, but I read this post and it seems not to be possible. So... is there anyway to at least pause my application and resume it once the call has finished? Thank you so much for reading.

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• Code Golf - p day

  - by gnibbler

  The Challenge The shortest code by character count to display a representation of a circle of radius R using the *character, followed by an approximation of p. Input is a single number, R. Since most computers seem to have almost 2:1 ratio you should only output lines where y is odd. The approximation of p is given by dividing twice the number of * characters by R². The approximation should be correct to at least 6 significant digits. Leading or trailing zeros are permitted, so for example any of 3, 3.000000, 003 is accepted for the inputs of 2 and 4. Code count includes input/output (i.e., full program). Test Cases Input 2 Output *** *** 3.0 Input 4 Output ***** ******* ******* ***** 3.0 Input 8 Output ******* ************* *************** *************** *************** *************** ************* ******* 3.125 Input 10 Output ********* *************** ***************** ******************* ******************* ******************* ******************* ***************** *************** ********* 3.16

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• Pass data to Master Page with ASP.NET MVC

  - by Brian David Berman

  I have a hybrid ASP.NET WebForms/MVC project. In my Master Page, I have a "menu" User Control and a "footer" User Control. Anyways. I need to pass some data (2 strings) to my "menu" User Control on my Master Page (to select the current tab in my menu navigation, etc.) My views are strongly-typed to my data model. How can I push data from my controller to my menu or at least allow my master page to access some data pre-defined in my controller? Note: I understand this violates pure ASP.NET MVC, but like I said, it is a hybrid project. The main purpose of my introduction to ASP.NET MVC into my project was to have more control over my UI for certain situations only.

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• Any software transforming broken lines into curves?

  - by brilliant

  Hello, do you know of any software that would help me transform a broken line into a curved line? For example, I have an octagon or a heptagon and I want it to be transformed into something resembling a circle. if you know such software, please, let me know. Thank You! Update A: Here is an image from the tutorial given to me by Jamie Keeling (right now it's the first answer below). At least the picture there represents what I want. In that tutorial this process is called "flattening paths". I will try to put that image right here, but if it doesn't get displayed, you can find it here: http://msdn.microsoft.com/en-us/library/ms536364%28v=VS.85%29.aspx The red line in the picture is what I would want to submit, and the blue line is what I would want to get in the end:

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