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• How do I use modulus for float/double?

  - by ShrimpCrackers

  I'm creating an RPN calculator for a school project. I'm having trouble with the modulus operator. Since we're using the double data type, modulus won't work on floating point numbers. For example, 0.5 % 0.3 should return 0.2 but I'm getting a division by zero exception. The instruction says to use fmod(). I've looked everywhere for fmod(), including javadocs but I can't find it. I'm starting to think it's a method I'm going to have to create? edit: hmm, strange. I just plugged in those numbers again and it seems to be working fine...but just in case. Do I need to watch out using the mod operator in Java when using floating types? I know something like this can't be done in C++ (I think).

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• Resharper Autocomplete Issue

  - by Gene

  Hi All, I've been using resharper with the resharper automplete off (just find VS better for my purposes currently), but despite trying every setting I've tried, whenever I use a resharper template (such as tab-completing an if - if block), the resharper autocomplete dialog comes up in addition to the visual studio dialog (thus if they don't autocomplete to the same thing, or I accidentally hit enter, whatever I originally typed is replaced with the wrong resharper suggestion, effectively highlighting why I turned it off in the first place). A. Has anyone every seen this before? (I ask since I might have turned on/off a number of settings in a strange/incompatible way and perhaps a clean install might clear it up.) B. Any suggestions? :) (Visual Studio 08 SP1, Resharper 4.5.2 - only other tools installed are DevExpress, but they have long since been disabled) Thanks all!

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• CONTAINSTABLE with wildcard works different in SQL Server 2005 and SQL Server 2008?

  - by musuk

  I have two same databases one on SQL Server 2005 and one on SQL Server 2008, it have same SQL_Latin1_General_CP1_CI_AS Collation, and full text search catalogs have the same settings. These two databases contains table with same data, NTEXT string: "...kræve en forklaring fra miljøminister Connie Hedegaard.." My problem is: CONTAINSTABLE on SQL Server 2008 finds nothing if query is: select * from ContainsTable(SearchIndex_7, Content, '"miljø*"') ct but SQL Server 2005 works perfectly and finds necessary record. SQL Server 2008 finds necessary record if query is: select * from ContainsTable(SearchIndex_7, Content, '"milj*"') ct or select * from ContainsTable(SearchIndex_7, Content, '"miljøminister"') What can be reason for so strange behavior?

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• C: Cannot declare pointer inside if statement

  - by echedey lorenzo

  Hi, I have a pointer which points to a function. I would like to: if (mode == 0) { const unsigned char *packet = read_serial_packet(src, &len); } else { const unsigned char *packet = read_network_packet(fd, &len); } But I cannot do it because my compiler complains when I first use the pointer later in the code. error: 'packet' undeclared (first use in this function) This is strange. It worked without the if statement, but now I need my program to be able to get data from different sources. Isn't it possible to do this? I think so. If it isn't, is there any other simple way to get what I am trying? Thanks a lot.

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• PHP Thumbnail image generator works, but consistently awaits 90% of its loadtime! Why?

  - by Sam

  Hi folks, This is the follow-up question from this general page load speed question. This question which will focus only, entirely and specifically on the thumbnail generator PHP code with the question: What's causing the 97% delays on these tiny thumbnails? Measuring only 3 ~ 5 kb each, this is strange indeed! Even after 7 orso bounty-rounds and 100 upvotes, the images are still doing nothing for over 97% of the time. It works allright, but it could be so much faster! ZAM, my pet robot, was so annoyed by not knowing why, he just pulled out some cords! Silly metal box... (I have asked permission from the original author, to put temporarily segments of the code online that I think could be the problem, after which I will remove all code, except the several lines that were the direct cause of this issue here to match the answer. This will be the free opportunity to perfect/speedup his otherwise already to my opinion vert versatile and userfriendly thumbnail generator.)

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• Servlet request getparameter's performance

  - by Bob

  Hi, I noticed that my app is very slow sometimes, so I've done some tests. It's a very simple web app. One servlet gets some parameters than stores them. Everything's fine except one thing. It takes too long to get a parameter for the first time. It doesn't matter which parameter I try to get, but for the first time it is very slow. The strange thing is this doesn't happen always. Sometimes getting a parameter for the first time is not slow. My code looks like this request.getParameter("paramName"); request.getParameter("paramName2"); request.getParameter("paramName3"); Getting "paramName" is slow. Getting the others is very fast. By slow I mean : 200-800 millisec By very fast I mean: ~0 millisec (in the code snippet, I didn't write the performance test, but I'm using System.currentTimeMillis())

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• PHP: Odd behaviour with date_sunset function

  - by Svish

  I'm having a look at the date_sunset function in PHP and have met an issue that I find a bit strange. I have this piece of code: $sunset = date_sunset(mktime(0, 0, 0, 5, 14, 2010), $format, // Format 55.596041, // Latitude 12.992495, // Longitude 90, // Zenith 2 // GMT Offset ); For the three different formats, that would give me: SUNFUNCS_RET_STRING 21:05 SUNFUNCS_RET_DOUBLE 21.095732016315 SUNFUNCS_RET_TIMESTAMP 1273863944 // H:i:s O -> 19:05:44 +0000 Why is the timestamp format ignoring the gmt offset? Is is supposed to be like that? If so what is the reason behind that?

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• losing session in rails 2.3.2 app using subdomain

  - by mike in africa

  i have a 2.2.3 app which i upgraded to 2.3.2 it's a multi-site (using subdomain) that creates one top level session for all sites. this is how i change the domain in production.rb: ActionController::Base.session_options[:domain] = "xxx.com" # in rails 2.2.2, this is what i used to do: # ActionController::Base.session_options[:session_domain] = "xxx.com" strange things started to happen after i upgraded i can no longer login using restful authentication; it does authenticate me, but as soon as i'm redirected, it would ask me to login again. as i said, i use restful_authentication and i also use passenger 2.1.2. anyone can help?

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• uiSlider thumb graphic 'flashes' when dragging uiScrollview on 1st gen 3.1.3

  - by Mark Tompson

  I have added my own thumb to a uiSlider and added a 1px x 1px transparent .png to the tracks (I don't want to see the tracks) (I have also tried setting tracks to nil). My uiSlider is also rotated to vertical. The uiSlider sits over a uiScrollView but is not 'attached' to that view. There are numerous uiLabels 'attached' to this uiScrollView, so they all slide about 'beneath' the uiSlider. It all works fine on 3g and iphone 4, but on my 1g itouch (3.1.3) I get a strange flash from the thumb graphic sometimes when scrolling the uiScrollview!? It does seem to happen when the edge of a uiLabel (on the uiScrollView) passes 'under' the thumb graphic? I have tried everything I can think of...

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• Excel VBA: Sum invoice by client id with copying result to new worksheet

  - by Melkior

  Hi, i have strange problem doing reporting: i have numerous clients with different issued invoices. Problem comes to the point when there are invoices in minus and plus: Column A consists of client unique IDs, Column B invoice number, column C invoice amount A | B | C 0010019991 | 1800149471 | 162.00 | 2010-03-12 0010019991 | 1800136388 | 162.00 | 2010-02-12 0010019991 | 1600008004 | -36.00 | 2010-03-15 0010021791 | 1800132148 | 162.00 | 2010-03-12 0010021791 | 1800145436 | 162.00 | 2010-02-12 0010021791 | 1600007737 | -12.00 | 2010-03-15 0014066147 | 1800119068 | 1,684.80 | 2010-03-12 0014066147 | 1800123702 | 1,684.80 | 2010-02-12 0014066147 | 1600007980 | -1,300.80 | 2010-02-15 0014066147 | 1600007719 | -1,286.40 | 2010-03-15 I need to remove rows with negative invoices in a way that amount is summed with invoices which are not with negative amount. So that final result would look like: A | B | C | D 0010019991 | 1800149471 | 126.00 | 2010-03-12 0010019991 | 1800136388 | 162.00 | 2010-02-12 0010021791 | 1800132148 | 150.00 | 2010-03-12 0010021791 | 1800145436 | 162.00 | 2010-02-12 0014066147 | 1800123702 | 782.40 | 2010-02-12

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• ptrace'ing of parent process

  - by osgx

  Hello Can child process use the ptrace system call to trace its parent? Os is linux 2.6 Thanks. upd1: I want to trace process1 from "itself". It is impossible, so I do fork and try to do ptrace(process1_pid, PTRACE_ATTACH) from child process. But I can't, there is a strange error, like kernel prohibits child from tracing their parent processes UPD2: such tracing can be prohibited by security policies. Which polices do this? Where is the checking code in the kernel? UPD3: on my embedded linux I have no errors with PEEKDATA, but not with GETREGS: child: getregs parent: -1 errno is 1, strerror is Operation not permitted errno = EPERM

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• CONTAINSTABLE with wildcard works different in SQLServer 2005 and SQLServer 2008?

  - by musuk

  I have two same databases one on SQLServer 2005 and one on SqlServer 2008, it have same SQL_Latin1_General_CP1_CI_AS Collation, and full text search catalogs have the same settings. These two databases contains table with same data, NTEXT string: "...kræve en forklaring fra miljøminister Connie Hedegaard.." My problem is: CONTAINSTABLE on SQLServer 2008 finds nothing if query is: select * from ContainsTable(SearchIndex_7, Content, '"miljø*"') ct but SQLServer 2005 works perfectly and finds necessary record. SQLServer 2008 finds necessary record if query is: select * from ContainsTable(SearchIndex_7, Content, '"milj*"') ct or select * from ContainsTable(SearchIndex_7, Content, '"miljøminister"') What can be reason for so strange behavior?

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• Index, assignment and increment in one statement behaves differently in C++ and C#. Why?

  - by Ivan Zlatanov

  Why is this example of code behaving differently in c++ and C#. [C++ Example] int arr[2]; int index = 0; arr[index] = ++index; The result of which will be arr[1] = 1; [C# Example] int[] arr = new int[2]; int index = 0; arr[index] = ++index; The result of which will be arr[0] = 1; I find this very strange. Surely there must be some rationale for both languages to implement it differently? I wonder what would C++/CLI output?

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• Drupal Views how to filter items overlapping a date range

  - by Marcos Buarque

  Hi, in Drupal I have used CCK to add a datetime field to my custom data type. It inserts start date and end date fields. That is what I want. Now, I want Views to filter and show only the items that have the daterange (start date and end date) overlapping today's date. Any ideas on how to set it up on Views? What I think is strange is that the date fields of my custom content type don't seem to appear on the Views list when I am trying to add a filter. Thanks.

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• How to delete table rows programmatically?

  - by Donal O'Danachair

  I have a table which I am manipulating with a tableViewController (no nib, and the controller is creating the table behind the scenes) I'm trying to delete a row from the table based on its row number; I can delete it from the array I use to create the cell in cellForRowAtIndexPath, but I get a strange error if I try to do the following, which is the same code as in tableView:commitEditingStyle:forRowAtIndexPath: where it works fine NSIndexPath *indexPath = [NSIndexPath indexPathForRow:i+1 inSection:1] [self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; It gives an error -[_WebSafeForwarder forwardInvocation:] and then jumps out of the method but does not crash the app Can anyone help?

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• C# "Could not find a part of the path" - Creating Local File

  - by Pyronaut

  I am trying to write to a folder that is located on my C:\ drive. I keep getting the error of : Could not find a part of the path .. etc My filepath looks basically like this : C:\WebRoot\ManagedFiles\folder\thumbs\5c27a312-343e-4bdf-b294-0d599330c42d\Image\lighthouse.jpg And I am writing to it like so : using (MemoryStream memoryStream = new MemoryStream()) { thumbImage.Save(memoryStream, ImageFormat.Jpeg); using (FileStream diskCacheStream = new FileStream(cachePath, FileMode.CreateNew)) { memoryStream.WriteTo(diskCacheStream); } memoryStream.WriteTo(context.Response.OutputStream); } Don't worry too much about the memory stream. It is just outputting it (After I save it). Since I am creating a file, I am a bit perplexed as to why it cannot find the file (Shouldn't it just write to where I tell it to, regardless?). The strange thing is, It has no issue when I'm testing it above using File.Exists. Obviously that is returning false, But it means that atleast my Filepath is semi legit. Any help is much appreciated.

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• wonder about some #define tricks

  - by kingkai

  Whlie reading codes of my group project, I come across many DEFINEs, and some of them seems strange. To generalize it, please look at the following 2 examples. Example 1: #define SNPRINTF(dst, fmt, arg...) snprintf(dst, sizeof(dst), fmt, ##arg) what does "##" means in this circumstance? I've tried to delete both of them, and write codes like "char buf[1024]; SNPRINTF(buf,"%s,%s","abcd","efg");" which produced the same result. So "##" seems no use and no harm to me. Example 2: #define CLOSE(fd) do { \ if (-1 != (fd)) { \ close(fd); \ (fd) = -1; \ } \ } while (0) Necessary to stuff the inner code to the do{}while(0) statement? what's the use? Thanks!

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• Tripple-wrapping fails: \colorbox ? \NewEnviron ? \newenvironment fails

  - by o_O Tync

  Hello! I am trying to wrap an environment created with \NewEnviron (package 'environ') into an old good \newenvironment: \NewEnviron{test}{\colorbox[gray]{0.7}{\BODY}} \newenvironment{wrapper}{\begin{test}}{\end{test}} \begin{wrapper} debug me \end{wrapper} However, this gives me a strange error: LaTeX Error: \begin{test} on input line 15 ended by \end{wrapper}. LaTeX Error: \begin{wrapper} on input line 15 ended by \end{document}. If I replace \NewEnviron{test}{aaa(\BODY)bbb} with \newenvironment{test}{aaa(}{)bbb} — everything works as expected! It seems like \NewEnviron fails to find its end for some reason. I'm trying to do some magic with 'floatfig' wrapped into a \colorbox so I need a way to convert \colorbox to an environment and wrap it into another one. I can define a new command but it's not a very good idea. Thanks in advance!

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• NotifyIcon behaviour on Windows 7 with MouseClick, MouseDoubleClick events

  - by binball

  I have strange behaviour with my app after run it on Windows 7. It's connected with NotifyIcon while app is minimized. What should happens: 1) Click once on icon with mouse left button then Balloon with some text should appears 2) Double click on icon will show again app window On Windows 7 MouseDoubleClick is also fired but window is not showing. I don't know why. The same code works good on Windows XP. private void notifyIcon_MouseClick(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { this.NotifyIconShowBalloonWithData(); } } private void notifyIcon_MouseDoubleClick(object sender, MouseEventArgs e) { this.Show(); WindowState = FormWindowState.Normal; notifyIcon.Visible = false; } What did I wrong? :)

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• Debugging ASP.NET on a built-in web server suddenly stops

  - by Anton Gogolev

  I have Windows Server 2008 (64-bit), VS 2008 with its built-in webserver and an ASP.NET MVC 1.0 webapp. All I'm trying to do is to debug said app. I have a bunch of breakpoints, but they behave in a very strange way. When I fist start a debugging session with F5 and hit a breakpoint, the debugger stops just fine. However, after serveral F10s/F11s debugging suddenly "stops" (no exceptions at that time), but neither VS detaches from browsers' process, nor webapp execution stops: Visual Studio stays attached, and web request continues executing as usual. I tried various browsers (Chrome, Firefox, IE), but to no avail. What do I do to solve this? It really drives me insane.

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• Why is there a seemingly identical copy of the JDK 1.5 core runtime in org.osgi.foundation-1.0.0.jar?

  - by Jonathan Neufeld

  I am maintaining a web application that depends on OSGi and Maven pulls-in a jar called org.osgi-foundation-1.0.0.jar that seems to contain the same classes as part of the JDK core runtime such as: java.util.*; java.io.*; etc. and so on. This seems very strange and I have to ask why this is necessary. More-over, my web-application fails to deploy on JBoss 6 because these are "illegal package names" for a third-party library. What is the purpose of org.osgi-foundation-1.0.0.jar ? is it necessary?

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• How can I fix the scroll bug when using Windows rich edit controls in wxpython?

  - by ChrisD

  When using wx.TextCtl with the wx.TE_RICH2 option in windows, I get this strange bug with the auto-scroll when using the AppendText function. It scrolls so that all the text is above the visible area, which isn't very useful behaviour. I tried just adding a call to ScrollLines(-1) after appending the text - which does scroll it to the correct position - but this can lead to the window flashing when it auto-scrolls. So I'm looking for another way to automatically scroll to the bottom. So far, my solution is to bypass the AppendText functions auto-scroll and implement my own, like this: def append_text(textctrl, text): before_number_of_lines = textctrl.GetNumberOfLines() textctrl.SetInsertionPointEnd() textctrl.WriteText(text) after_number_of_lines = textctrl.GetNumberOfLines() textctrl.ScrollLines(before_number_of_lines - after_number_of_lines + 1) Is there a better way?

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• Spring struts and forms

  - by Kiva

  Hi guy, I need to integrate struts with spring for a project. I read the doc to ingrate struts and it's ok for classic beans but I have a problem for my forms. I have a form like this in my struts-config.xml: <form-beans> <form-bean name="creationForm" type="org.apache.struts.validator.DynaValidatorActionForm" > <form-property name="libelle" type="java.lang.String" /> <form-property name="quantite" type="java.lang.String" /> <form-property name="prix" type="java.lang.String" initial="10" /> </form-bean> But it's strange for me to have a "type" in struts-config because it's spring which manages beans. I don't found anything in the doc to manage forms by spring and the attribute "type" is mandatory for form in struts-config. Someone can help me please ?

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• itemdoubleclick event in ExtJS Charts

  - by Abdel Olakara

  Hi all, I got a strange issue today while working on ExtJS charts. I am trying to use some of the events for the chart when user clicks on the chart items. I found the following events are available: itemclick, itemdoubleclick, itemdrag, itemdragstart, itemdragend, itemmouseover, itemmouseout Here is my test chart where I have implemented all these events. Each event just create a list tag in my debuging console. The issue is, no matter what, itemdoubleclick do not get fired! what is the issue? Why is it not getting fired? xtype:'columnchart', width:600, height:350, id:'myChart', store: store, xField: 'month', yField: 'sales', listeners: { itemdoubleclick: function(o) { var dh = Ext.DomHelper; dh.append('consoleList', {tag: 'li', html: 'itemdoubleclick'}); } } In firebug console, I see that this event is registered. PS: In my code above, I have put only the event that is not working. Thanks in advance for your ideas and suggestions.

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• AesCryptoServiceProvider not part of SymmetricAlgorithm?

  - by user330006

  I have a quick little app that steps through the possible symmetric encryption methods. I get them with the following line: private static List<Type> GetAlgorithmTypes { get { return Assembly.GetAssembly(typeof(SymmetricAlgorithm)).GetTypes().Where( type => type.IsSubclassOf(typeof(SymmetricAlgorithm))).ToList(); } } As you can see when i run this, AesCryptoServiceProvider is not a member of this group, even though it inherits from AES, which does belong to SymmetricAlgorithm and shows up in my list. This wouldn't be so much of a problem, i can manually add the provider in the group if i have too, but then if i try to retrieve this type by its name: Type t = Type.GetType("System.Security.Cryptography.AesCryptoServiceProvider"); i get a null object for AesCryptoServiceProvider, but not for any of the other items in the group. This is really strange, and i'm wondering if anyone has any ideas. It's kinda making me need to use tripleDES because of this (since my machines are all running the FIPS compliance requirement). Thanks for any help!

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