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  • Too many argumants for function

    - by Stas Kurilin
    I'm starting learning Lisp with Java background. In SICP's exercise there is many tasks where students should create abstract functions with many parameters, like (define (filtered-accumulate combiner null-value term a next b filter)...) in exercise 3.11. In Java (language with safe, static typing discipline) - method with more than 4 arguments usually smells, but in Lisp/Scheme it doesnt, does it? I'm wandering how many arguments do you use in you functions? If you use it in production, do you make such many layers?

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  • Pre-allocate memory between HostApp and DLL

    - by Leo
    I have a DLL which provided a decoding function, as follows: function MyDecode (Source: PChar; SourceLen: Integer; var Dest: PChar; DestLen: Integer): Boolean; stdcall; The HostApp call "MyDecode", and transfer into the Source, SourceLen and Dest parameters, the DLL returns decoded Dest and DestLen. The problem is: The HostApp impossible to know decoded Dest length, and therefore would not know how to pre-allocated Dest's memory. I know that can split "MyDecode" into two functions: function GetDecodeLen (Source: PChar; SourceLen: Integer): Integer; stdcall; // Return the Dest's length function MyDecodeLen (Source: PChar; SourceLen: Integer; var Dest: PChar): Boolean; stdcall; But, My decoding process is very complicated, so if split into two functions will affect the efficiency. Is there a better solution?

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  • Function pointer arrays in Fortran

    - by Eduardo Dobay
    I can create function pointers in Fortran 90, with code like real, external :: f and then use f as an argument to another function/subroutine. But what if I want an array of function pointers? In C I would just do double (*f[])(int); to create an array of functions returning double and taking an integer argument. I tried the most obvious, real, external, dimension(3) :: f but gfortran doesn't let me mix EXTERNAL and DIMENSION. Is there any way to do what I want? (The context for this is a program for solving a system of differential equations, so I could input the equations without having a million parameters in my subroutines.)

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  • Excel Data List Validation in Powershell

    - by idazuwaika
    Hi, I have a range named "STATE". I want to set data validation in range ("A1") to only take value within this range using Powershell. Below is what I have tried. Does not work. I dont know what to put as 4th and 5th parameters. The first 3 are Excel constants equivalent to xlValidateList, xlValidAlertStop and xlBetween respectively. $ws.Range("A1").Validation.Add(3, 1, 1, "=STATE", 0) Please help. Thanks.

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  • How to combine template partial specialization and template argument deduction

    - by KKKoo0
    My understanding is that template argument deduction is only for function templates, but function templates does not allow partial specialization. Is there a way to achieve both? I basically want to achieve a function-like object (can be a functor) with the signature template<class InputIterator1, class InputIterator2, class OutputIterator, int distribution> void GetQuantity(InputIterator1 frist1, InputIterator1 last1, InputIterator2 first2, OutputIterator result, double supply, double limit); Depending on the value of distribution, I want to have a couple of specializations of this template. And when I call this function,I basically do not want to specify all the type parameters, because they are many of them (and thus I need argument deduction)!

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  • Twitter URL encoding. Getting error when placing UK Currency sign in URL?

    - by bbacarat
    I'm attempting to setup a retweet button with some pre-written post text. However I need to place a pound sign in like so: £50k I've search the web and for the UK currency sign I've been told it is supposed to be replaced with the code: %a3 However when I attempt to click on the link I get the error message: "Invalid Unicode value in one or more parameters" This is the document declaration at the top of the html page I'm using: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

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  • Cannot run an executable binary file on another Linux System??

    - by Claire Huang
    I'm using Ubuntu 10.04 and Qt4.6, and I've created an executable binary file on my own computer through QtCreator. Now I want to put my executable file on CentOS 5, but it seems that this executable file cannot run on CentOS. Do I need to set some compile parameters to make it runnable on Linux other than Ubuntu?? Or do I need to put some lib files with the executable binary file? (For windows, the .exe file should put together with some .dll files to provide the correct dynamic lib linkage, is there some similar problem on linux?) Thanks for your help!

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  • AS3 Pass FlashVars to loaded swf

    - by Robin
    Hi I have a A.swf which loads B.swf onto a movieclip and needs to pass it some FlashVars. When loading B.swf with html, I can pass FlashVars fine. When passing from A.swf, it gets a Error #2044: Unhandled ioError:. text=Error #2032: Stream Error. URL: file: The code in A.swf is var request:URLRequest = new URLRequest ("B.swf"); var variables : URLVariables = new URLVariables(); variables.xml = "test.xml"; // This line causes the error 2044, else B.swf loads fine with FlashVars request.data = variables; loader.load (request); In B.swf, it is checking the Flashvars like so. It works fine from html side this.loaderInfo.parameters.xml

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  • Generating JavaDoc style documentation

    - by Walter White
    Hi all, I would like to generate a report similar to JavaDoc so that you can real easily click on a test, result, and source. I am running HtmlUnit tests so I will have the result (html), source (request, headers, parameters, etc.), stack trace all visible so a developer or qa can go back later to review this to see what went awry. So, in the left frame, the tests will be listed along with the group they were a part of (similar to packages in javadoc). In the right frame, the results will be presented along with the source and stack trace. How can I achieve this? The HtmlUnit tests are part of the project and not a stand-alone plugin if that matters. Thanks, Walter

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  • InvalidAttributeValueException when using non-ascii characters in JNDI

    - by matdan
    Hi, I have some trouble using JNDI since it accepts only 7-bits encoded parameters. I am trying to change an LDAP entry using JNDI with the following code : Attribute newattr = new BasicAttribute("userpassword", password); ModificationItem[] mods = new ModificationItem[1]; mods[0] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE, newattr); context.modifyAttributes("uid=anID,ou=People,o=MyOrganisation,c=com", mods); If my password contains only ascii characters, it works perfectly, but if I use a non-ascii character, like "à", I have this error message : javax.naming.directory.InvalidAttributeValueException: [LDAP: error code 19 - The value is not 7-bit clean: à]; My ldap supports those characters so I guess it comes from JNDI. Does anyone know how to fix that? Am I supposed to convert my parameter? How can I do that easily? Thanks

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  • Marshal a list of objects from VB6 to C#

    - by Andrew
    I have a development which requires the passing of objects between a VB6 application and a C# class library. The objects are defined in the C# class library and are used as parameters for methods exposed by other classes in the same library. The objects all contain simple string/numeric properties and so marshaling has been relatively painless. We now have a requirement to pass an object which contains a list of other objects. If I was coding this in VB6 I might have a class containing a collection as a member variable. In C# I might have a class with a List member variable. Is it possible to construct a C# class in such a way that the VB6 application could populate this inner list and marshal it successfully? I don't have a lot of experience here but I would guess Id have to use an array of Object types.

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  • Greek/latin scientific JLabel in Java Swing application

    - by MartinStettner
    For a scientific application I want to design an input form which lets the user enter certain parameters. Some of them are designated using greek letters, some of them have latin letters. The parameter names should be displayed using ordinary JLabel controls. On Windows, the Tahoma font (which is used for Labels by default) contains both latin and greek letters, so I simply set the Text property of the label to a greek (unicode) string and everything works fine. I'm wondering if this works also without modifications on Linux and OSX systems resp. for which Java/OS versions this would work. Also I'm curious if there's an easy way to show subscripts in labels ("\eta_0" in TeX), but this is not that important for my application ...

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  • Subsetting a data frame in a function using another data frame as parameter

    - by lecodesportif
    I would like to submit a data frame to a function and use it to subset another data frame. This is the basic data frame: foo <- data.frame(var1= c('1', '1', '1', '2', '2', '3'), var2=c('A', 'A', 'B', 'B', 'C', 'C')) I use the following function to find out the frequencies of var2 for specified values of var1. foobar <- function(x, y, z){ a <- subset(x, (x$var1 == y)) b <- subset(a, (a$var2 == z)) n=nrow(b) return(n) } Examples: foobar(foo, 1, "A") # returns 2 foobar(foo, 1, "B") # returns 1 foobar(foo, 3, "C") # returns 1 This works. But now I want to submit a data frame of values to foobar. Instead of the above examples, I would like to submit df to foobar and get the same results as above (2, 1, 1) df <- data.frame(var1=c('1','1','3'), var2=c("A", "B", "C")) When I change foobar to accept two arguments like foobar(foo, df) and use y[, c(var1)] and y[, c(var2)] instead of the two parameters x and y it still doesn't work. Which way is there to do this?

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  • How do I adjust overall width of rdlc report when some columns are hidden?

    - by user115487
    I have a customizable rdlc report where the user can choose which columns to show. All the columns are included in the report designer, and I use parameters to hide/show columns based on the user's choice. The report renders correctly, and only shows the selected columns, HOWEVER, the overall width of the report is the same as if all the columns were visible. This means that the report can have a huge empty area to the right of the selected columns, which looks very silly. So my question: Is there a way to adjust the report width dynamically at runtime to avoid a large silly empty area in the report? I attempted to do this in the designer by assigning a parameter to the width of the report body....but that was not allowed. The width cannot be an expression of any kind in the designer, only an actual value is allowed. Any suggestions?

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  • .NET: Preserving some, but not all query params during redirect

    - by kasper pedersen
    Hi all, Could someone tell me if the code below would achieve what I want, which is: Check if the query parameters 'return_path' and/or 'user_state' are present in the query string, and if so append them to the query string of the redirect URI. As I'm not a .NET dev and don't have a server to test this on, I was hoping someone could give me some feedback. ArrayList vars = new ArrayList(); vars.Add("return_path"); vars.Add("user_state"); string newUrl = "/new/request/uri" + "?"; ArrayList params = new ArrayList(); foreach ( string key in Request.QueryString ) { if (vars.contains(key)) { params.Add(key + "=" + HttpUtility.URLPathEncode(Request.QueryString[key])); } } String[] paramArr = (String[]) params.ToArray( typeof (string) ); String queryString = String.join("&", paramArr); Response.Redirect(newUrl); Thank you :)

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  • After installing VS 2010 - Generic Host Process For Win32 Services problem starts.

    - by Muhammad Kashif Nadeem
    After installing VS 2010 trial I am getting this error "Generic Host Process For Win32 Services Encountered A Problem and needs to close. When this message pops my computer just stuck and I can not even restart it normally. I have found one fix on net but after that fix I can not access my LAN. This fix change these values in registry. HKLM\SYSTEM\CurrentControlSet\Services\netbt\parameters TransportBindName HKLM\Software\Microsoft\OLE EnableDCOM If I revert these registry changes then I again start getting 'Generic Host Process For Win32 Services' I have uninstall VS 2010 but this problem persist. This problem is not because of any virus. Any help to fix this or I have to re install Windows. Thanks.

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  • Need help debugging a PHP 5 SOAP hello world application

    - by WarDoGG
    I've been trying to get PHP 5 SOAP extension to work after reading every tutorial there is on the web, but to no avail. This has been very frustrating and i would really appreciate it if someone could point out where i am going wrong and why. Thanks for your help in advance, and any more details needed i'll oblige. The WSDL is as follows : <?xml version="1.0" encoding="utf-8"?> <wsdl:definitions name="test" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:tns="http://tempuri.org/" xmlns:s1="http://microsoft.com/wsdl/types/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"> <wsdl:types> <s:schema elementFormDefault="qualified" targetNamespace="http://tempuri.org/"> <s:import namespace="http://microsoft.com/wsdl/types/" /> <s:element name="getUser"> <s:complexType> <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="username" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="password" type="s:string" /> </s:sequence> </s:complexType> </s:element> <s:element name="getUserResponse"> <s:complexType> <s:sequence> <s:element minOccurs="0" maxOccurs="1" name="getUserResult" type="tns:bookUser" /> </s:sequence> </s:complexType> </s:element> <s:complexType name="bookUser"> <s:sequence> <s:element minOccurs="1" maxOccurs="1" name="ID" type="s:int" /> <s:element minOccurs="1" maxOccurs="1" name="GUID" type="s1:guid" /> <s:element minOccurs="0" maxOccurs="1" name="login" type="s:string" /> <s:element minOccurs="0" maxOccurs="1" name="pass" type="s:string" /> </s:sequence> </s:complexType> </s:schema> </wsdl:types> <wsdl:message name="getUserSoapIn"> <wsdl:part name="parameters" element="tns:getUser" /> </wsdl:message> <wsdl:message name="getUserSoapOut"> <wsdl:part name="parameters" element="tns:getUserResponse" /> </wsdl:message> <wsdl:portType name="test"> <wsdl:operation name="getUser"> <wsdl:input message="tns:getUserSoapIn" /> <wsdl:output message="tns:getUserSoapOut" /> </wsdl:operation> </wsdl:portType> <wsdl:binding name="testBinding" type="tns:test"> <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" /> <wsdl:operation name="getUser"> <soap:operation soapAction="http://tempuri.org/getUser" /> <wsdl:input> <soap:body use="literal" /> </wsdl:input> <wsdl:output> <soap:body use="literal" /> </wsdl:output> </wsdl:operation> </wsdl:binding> <wsdl:service name="testService"> <wsdl:port name="testPort" binding="tns:testBinding"> <soap:address location="http://127.0.0.1/index.php" /> </wsdl:port> </wsdl:service> </wsdl:definitions> The code for the server : <?php function getUser($param) { return array( 'bookUser'=>array ( 'ID'=>1, 'GUID'=>2, 'login'=>$param->username, 'pass'=>$param->password ) ); } ini_set("soap.wsdl_cache_enabled", "0"); // disabling WSDL cache $server = new SoapServer("http://127.0.0.1/1.wsdl"); $server->addFunction("getUser"); $server->handle(); ?> and the code for the client : $client = new SoapClient("http://127.0.0.1/index.php?wsdl", array('exceptions' => 0)); try { $arr_data = array ( array ( 'username'=>'xyz', 'password'=>'abc' ) ); print_r($client->__soapCall("getUser",$arr_data)); } catch (SoapFault $result) { print_r($result); }

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  • How to open a logfile in windbg from a script, such that each logfile is named by the timestamp of c

    - by shan23
    Hi,I want to run a windbg script that will accomplish the following: I want to track certain registers the moment an API is hit, without stopping due to timing issues. So , the moment the API is called, I want the script to open a logfile, echo the fact that the api is hit with the details of the parameters, and let it run till it hits the conditional brkpoint I've put at the API end, which simply closes the open logfile. Now , the problem is, I want to do this multiple times, w/o the previous logfile getting overwritten. Ideally, if there is some command which lets me specify that the name of the logfile (.logfile file) by the timestamp of that moment, my problem is solved. Can anyone help?

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  • 3d user experience with HTML5 and Javascript

    - by chako
    I've to build a 3D user experience with HTML5 and any required JS library which provides such functionality. 3D scene consists of a cylindrical pipe and surface. It has 360 degree rotation and can zoom in and out. As user selects a parameter, specific value of that parameter at various depth of pipe in surface should display. I've searched for HTML5 3d and JS libraries and found three.js could help for this.Also found this useful presentation on HTML 3d engine: http://projects.mariusgundersen.net/OnGameStart/#1 .But as this is my first time with HTML5 3d modeling, how should I initiate to build ? What parameters should be considered ? Which tools and libraries would best fit for such requirements ? I would like to create a 3d model using HTML5 and JS 3d engine as shown in the 1st image.

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  • Raw socket sendto() failure in OS X

    - by user37278
    When I open a raw socket is OS X, construct my own udp packet (headers and data), and call sendto(), I get the error "Invalid Argument". Here is a sample program "rawudp.c" from the web site http://www.tenouk.com/Module43a.html that demonstrates this problem. The program (after adding string and stdlib #includes) runs under Fedora 10 but fails with "Invalid Argument" under OS X. Can anyone suggest why this fails in OS X? I have looked and looked and looked at the sendto() call, but all the parameters look good. I'm running the code as root, etc. Is there perhaps a kernel setting that prevents even uid 0 executables from sending packets through raw sockets in OS X Snow Leopard? Thanks.

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  • CSharp -- PInvokeStackImbalance detected on a well documented function?

    - by Aaron Hammond
    Here is my code for a ClickMouse() function: [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] public static extern void mouse_event(long dwFlags, long dx, long dy, long cButtons, long dwExtraInfo); private const long MOUSEEVENTF_LEFTDOWN = 0x02; private const long MOUSEEVENTF_LEFTUP = 0x04; private const long MOUSEEVENTF_RIGHTDOWN = 0x08; private const long MOUSEEVENTF_RIGHTUP = 0x10; private void ClickMouse() { long X = Cursor.Position.X; long Y = Cursor.Position.Y; mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0); } For some reason, when my program comes to this code, it throws this error message: PInvokeStackImbalance was detected Message: A call to PInvoke function 'WindowsFormsApplication1!WindowsFormsApplication1.Form1::mouse_event' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature. Please help?

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  • size of view not changing after frame change

    - by MikeNelson
    I have managed to do pretty complex things on iPhone but I am always stuck with views, frames, bounds, and simple stuff that defies any logic and don't work as expected. I have a self.view in my code and it has a lot of subviews on it. At some point of the code, I need to reduce the frame vertically to a specific size and later put it back as before. Then I have this code: [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.5]; // frame is changing to a newHeight (other parameters are the same as before) self.view.frame = CGRectMake (0, 0, originalWidth, newHeight); [UIView commitAnimations]; The result is simply, nothing. The view continues as before. The same size, the same position. No change. Why this kind of thing happens? how to solve that?

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  • Polygon with different line width (in R)

    - by Tal Galili
    Hi all, I would like to use a command like this: plot(c(1,8), 1:2, type="n") polygon(1:7, c(2,1,2,NA,2,1,2), col=c("red", "blue"), # border=c("green", "yellow"), border=c(1,10), lwd=c(1:10)) To create two triangles, with different line widths. But the polygon command doesn't seem to recycle the "lwd" parameter as it does the col or the border parameters. I would like the resulting plot to look like what the following code will produce: plot(c(1,8), 1:2, type="n") polygon(1:3, c(2,1,2), col=c("red"), # border=c("green", "yellow"), border=c(1,10), lwd=c(1)) polygon(5:7, c(2,1,2), col=c( "blue"), # border=c("green", "yellow"), border=c(1,10), lwd=c(10)) So my questions are: Is there something like polygon that does what I asked for? (If not, I would do it by creating a new polygon function that will break the original x,y by their NA's, although I am not yet sure what is the smartest way to do that...) Thanks, Tal

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  • Using an array in embedded x86 assembly??

    - by Mark V.
    Hey all I have a method (C++) that returns a character and takes an array of characters as its parameters. I'm messing with assembly for the first time and just trying to return the first character of the array in the dl register. Here's what I have so far: char returnFirstChar(char arrayOfLetters[]) { char max; __asm { push eax push ebx push ecx push edx mov dl, 0 mov eax, arrayOfLetters[0] xor edx, edx mov dl, al mov max, dl pop edx pop ecx pop ebx pop eax } return max; } For some reason this method returns a ? Any idea whats going on? Thanks

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  • Possible to view T-SQL syntax of a stored proc-based SqlCommand?

    - by mconnley
    Hello! I was wondering if anybody knows of a way to retrieve the actual T-SQL that is to be executed by a SqlCommand object (with a CommandType of StoredProcedure) before it executes... My scenario involves optionally saving DB operations to a file or MSMQ before the command is actually executed. My assumption is that if you create a SqlCommand like the following: Using oCommand As New SqlCommand("sp_Foo") oCommand.CommandType = CommandType.StoredProcedure oCommand.Parameters.Add(New SqlParameter("@Param1", "value1")) oCommand.ExecuteNonQuery() End Using It winds up executing some T-SQL like: EXEC sp_Foo @Param1 = 'value1' Is that assumption correct? If so, is it possible to retrieve that actual T-SQL somehow? My goal here is to get the parsing, etc. benefits of using the SqlCommand class since I'm going to be using it anyway. Is this possible? Am I going about this the wrong way? Thanks in advance for any input!

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