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• Is there a way to make C macros keyword agnostic?

  - by Dragos Toader

  Is there a way to concatenate keywords in a macro and get C to behave in a more dynamic fashion as in: #define macro(fun,ction,var,iable) function(variable) I know this kind of thing exists in other languages.

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• Shopping Cart in Flex 4

  - by chchrist

  I am trying to code a shopping cart using Flex 4. I am at the design process and I need to figure out which design pattern to use. I am thinking of using the Singleton pattern. I will have a Product Value Object where I'll save each product's values and the I'll push each product to an array variable in my Singleton class. Is my logic OK? Is there a better way? Thanks in advance

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• How to see the contents of std::map in Visual C++ .NET (Visual Studio 2003) while debugging?

  - by shan23

  I need to see the contents of a std::map variable while debugging. However, if i click on it in the Autos/Locals Tab, I see implementation specific stuff, instead of the keys and its contents which I want to look at. Is there a work-around i'm missing ?

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• Temporary PYTHONPATH in Windows

  - by Santa

  How do I set, temporarily, the PYTHONPATH environment variable just before executing a Python script? In *nix, I can do this: $ PYTHONPATH='.' python scripts/doit.py In Windows, this syntax does not work, of course. What is the equivalent, though?

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• PHP Detect if any URL variables have been set

  - by zuk1

  Hey guys, it's kind of hard to explain but basically I want to detect if any variables have been set through the URL. So with my IF statement all of the following should return true: http://domain.com/index.php?m=100 http://domain.com/index.php?q=harhar http://domain.com/index.php?variable=poo&crazy=yes and all the following return false: http://domain.com/index.php http://domain.com/test.php http://domain.com/no_variables.php Any ideas?

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• Issue binding Image Source dependency property

  - by Archana R

  Hello, I have created a custom control for ImageButton as <Style TargetType="{x:Type Button}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Local:ImageButton}"> <StackPanel Height="Auto" Orientation="Horizontal"> <Image Margin="0,0,3,0" Source="{Binding ImageSource}" /> <TextBlock Text="{TemplateBinding Content}" /> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> ImageButton class looks like public class ImageButton : Button { public ImageButton() : base() { } public ImageSource ImageSource { get { return base.GetValue(ImageSourceProperty) as ImageSource; } set { base.SetValue(ImageSourceProperty, value); } } public static readonly DependencyProperty ImageSourceProperty = DependencyProperty.Register("Source", typeof(ImageSource), typeof(ImageButton)); } However I'm not able to bind the ImageSource to the image as: (This code is in UI Folder and image is in Resource folder) <Local:ImageButton x:Name="buttonBrowse1" Width="100" Margin="10,0,10,0" Content="Browse ..." ImageSource="../Resources/BrowseFolder.bmp"/> But if i take a simple image it gets displayed if same source is specified. Can anyone tell me what shall be done?

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• How does volatile actually work?

  - by FredOverflow

  Marking a variable as volatile in Java ensures that every thread sees the value that was last written to it instead of some stale value. I was wondering how this is actually achieved. Does the JVM emit special instructions that flush the CPU cashes or something?

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• NSMutableArray with only a particular type of objects

  - by Leo

  Hello, is it possible to specify that a NSMutableArray can only contain a certain type of objects. For example, if I want to store only this kind of objects : @interface MyObject : NSObject { UInt8 value; } In order to be able to use the instance variable like this : - (void)myMethod:(NSMutableArray *)myArray{ for (id myObject in myArray){ [self otherMethod:myObject.value]; } } because I'm getting this error : request for member 'value' in something not a structure or union Thank you for your help

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• Returning char* in function

  - by Devel

  I have function: char *zap(char *ar) { char pie[100] = "INSERT INTO test (nazwa, liczba) VALUES ('nowy wpis', '"; char dru[] = "' )"; strcat(pie, ar); strcat(pie, dru); return pie; } and in main there is: printf("%s", zap( argv[1] ) ); When compiling I get the warning: test.c: In function ‘zap’: test.c:17: warning: function returns address of local variable How should I return char* propertly?

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• os.environ() giving errors while setting for Hudson

  - by Arnab Sen Gupta

  I want a small python script to set the HUDSON_HOME environment variable. When using the shell, I can easily do this using set HUDSON_HOME=http://localhost:8080 But how can I do the same directly through python?? I don't want to do it by passing the command line to os.system().. can os.environ() be of any help?? I had in my script: import os os.environ('HUDSON_HOME')='http://localhost:8080' but it's probably setting it for the subprocss and not the parent shell..any way around this??

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• First could access the repository next cannot

  - by Banani

  Hi! I have configured svnserve (1.6.5,plain, without apache) on Fedora 12. I could ran the following svn subcommands which access the repository after configuration. Such as, commit, update,checkout, list. But, when next time ( after stopping,ctrl-c and then starting svnserve)I tried above commands, could not access the repository. This is happening both from local and remote machine. I ran svn and svnserve as below. 'svn commit svn://127.0.0.1/myrepository/' from local client. 'svnserve -d --foregorund --listen-port=3690 -r /path-to-repository/mypository/' To understand the problem better, I created another repository and found similar behavior . Frist I could access the repository and next I could not. I tried doing strace on svnserve, but don't uderstand much of it. Below is the partial output. accept(3, {sa_family=AF_INET, sin_port=htons(54425), sin_addr=inet_addr("127.0.0 .1")}, [16]) = 4 fcntl64(4, F_GETFD) = 0 fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 waitpid(-1, 0xbfcdf31c, WNOHANG|WSTOPPED) = -1 ECHILD (No child processes) clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, chil d_tidptr=0xb7743758) = 9737 close(4) = 0 accept(3, 0xbfcdf2bc, [128]) = ? ERESTARTSYS (To be restarted) --- SIGCHLD (Child exited) @ 0 (0) --- sigreturn() = ? (mask now []) waitpid(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED) = 9737 waitpid(-1, 0xbfcdf31c, WNOHANG|WSTOPPED) = -1 ECHILD (No child processes) My question: Why user are not able to access the repository anymore? What information the strace output gives about this problem? Any help is much appreciated. Thanks. Banani

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• Read http body and put it into variables.

  - by Khou

  how do you create a class to read the html body and phase it into a variable? Example the page http://domain.com/page1.aspx display the following plaintext within the html body content item1=xyz&item2=abc&item3=jkl how do you read content of the html body and assign them to a variables in this case variable1=xyz (value taken from item1=) variable2=abc (value taken from item2=) variable3=jkl (value taken from item3=)?

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• Global resources can't be resolved after publishing Website in VS2008

  - by Scoregraphic

  Hi there I have a web-project running in VS 2008. We have some global resource files (*.resx) in the App_GlobalResources folder for internationalisation. All this works like a charm on my local IIS installation out of VS. But when I publish my web-project to the local filesystem and/or another server, all the resources can no longer be found. So I guess the pre-compilation is somehow corrupting stuff. When I call the pre-compiled web, I get an error that the resource object with key xyz cannot be found, although it could be found before. I checked with .NET reflector if the resource stuff made it into the *.dlls. All those identifiers are there (bin/Web.dll, bin/<culture>/Web.resources.dll). The identifiers are loaded like this: <asp:MenuItem NavigateUrl="~/OrderNew.aspx" Text="<%$ Resources:MyProject, MenuNewOrder %>" Value="NewOrder"> The resource files are called MyProject.resx and MyProject.<culture>.resx where <culture> corresponds the the specific culture (i.e. MyProject.de-DE.resx). Any ideas how to solve this? I really appreciate any help. Thanks Edit: If I copy the App_GlobalResources folder manually to the output, the resources may be loaded normally. So I really really wonder what this pre-compilation is all about. I'm still interested in solving the issue "the right way".

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• Python float copy question

  - by SJA

  Hi, I'm puzzled by some behaviour I'm seeing when copying a float array member into another variable - please help! For example data_entry[1] = 9.6850069951 new_value = data_entry[1] <comment> #print both 9.6850069951 9.6850663300 I'm aware of the problem of binary storage of floats but I thought with a direct copy of memory we would end up with the same value. Any ideas? I need better precision than this! thanks in advance Stuart

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• How to format TSQL SELECT output in SQL Sever

  - by mohamadreza

  How to loop through a select statement results to have a formatted text? for example the select is like: select name from table and we want a variable @names like this: "name1,name2,name3" Database is SQL Server 2005

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• how to hide ssh expect user/password

  - by raindrop18

  my perl cgi script I have the password/user on clear text and want to hide it or the user enter the credential interactively.is that possible? here is my code. please any help!! i am very new for perl. #!/usr/local/bin/expect ####################################################################################################### # Input: It will handle two arguments -> a device and a show command. ####################################################################################################### # ######### Start of Script ###################### # #### Set up Timeouts - Debugging Variables log_user 0 set timeout 10 set userid "USER" set password "PASS" # ############## Get two arguments - (1) Device (2) Command to be executed set device [lindex $argv 0] set command [lindex $argv 1] spawn /usr/local/bin/ssh -l $userid $device match_max [expr 32 * 1024] expect { -re "RSA key fingerprint" {send "yes\r"} timeout {puts "Host is known"} } expect { -re "username: " {send "$userid\r"} -re "(P|p)assword: " {send "$password\r"} -re "Warning:" {send "$password\r"} -re "Connection refused" {puts "Host error -> $expect_out(buffer)";exit} -re "Connection closed" {puts "Host error -> $expect_out(buffer)";exit} -re "no address.*" {puts "Host error -> $expect_out(buffer)";exit} timeout {puts "Timeout error. Is device down or unreachable?? ssh_expect";exit} } expect { -re "\[#>]$" {send "term len 0\r"} timeout {puts "Error reading prompt -> $expect_out(buffer)";exit} } expect { -re "\[#>]$" {send "$command\r"} timeout {puts "Error reading prompt -> $expect_out(buffer)";exit} } expect -re "\[#>]$" set output $expect_out(buffer) send "exit\r" puts "$output\r\n"

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• Selenium Test Runner and variables problem

  - by quilovnic

  Hi, In my selenium test suite (html), I define a first test case to initialize variable called in the next test case. Sample : In first script : store|//div[@id="myfield"]|myvar In my second script : type|${myvar}|myvalue But when I start test runner (from maven), it returns an error telling that ${myvar} is not found The value contained in the stored var is not used. Any suggestion ? Thans a lot

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• Javascript new object (function ) vs inline invocation

  - by Sheldon Ross

  Is there any considerations to determine which is better practice for creating an object with private members? var object = new function () { var private = "private variable"; return { method : function () { ..dosomething with private; } } } VS var object = function () { ... }(); Basically what is the difference between using NEW here, and just invoking the function immediately after we define it?

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• finding a letter in a string with jquery

  - by Ahmet vardar

  Hi, it looks very basic thing but i could not figure it out. var email = $("input#email").val(); how can i check if that email variable has @ letter ? Thanks

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• Can I find out the return value before returning while debugging in Visual Studio

  - by doekman

  Take the following function: DataTable go() { return someTableAdapter.getSomeData(); } When I set a breakpoint in this function, is there a possibility to inspect the returned value? The "go" function is directly coupled to a datagrid in an aspx page. The only way to inspect the returned datatable, is to use a temporary variable... However, that's a bit inconvenient. Isn't there another way?

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• Refactoring many nested ifs or chained if statements

  - by Icarus

  Hi, I have an object with large number of similar fields (like more than 10 of them) and I have to assign them values from an array of variable length. The solution would be either a huge nested bunch of ifs based on checking length of array each time and assigning each field OR a chain of ifs checking on whether the length is out of bounds and assigning each time after that check. Both seem to be repetitive. Is there a better solution ?

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• Debugging a Google Web Toolkit application that has an error when deployed on Google App Engine

  - by gerdemb

  I have a Google Web Toolkit application that I am deploying to Google App Engine. In the deployed application, I am getting a JavaScript error Uncaught TypeError: Cannot read property 'f' of null. This sounds like the JavaScript equivalent of a Java NullPointerException. The problem is that the GWT JavaScript is obfuscated, so it's impossible to debug in the browser and I can't reproduce the same problem in hosted mode where I could use the Java debugger. I think the reason I'm only seeing the error on the deployed application is that the database I'm using on the GAE server is triggering something differently than the test database I'm using during testing and development. So, any ideas about the best way to proceed? I've thought of the following things: Deploy a non-obsfucated version of my application. Despite a lot of Googling, I can't figure out how to do this using the automatic deploy script provided with the Google Eclipse Plugin. Does anyone know? Download and copy my GAE data to the local server Somehow point my development code to use the GAE server for data instead of the local test database. This seems like the best idea... Can anyone suggest how to proceed here? Finally, is there a way to catch these JavaScript errors on the production server and log them somewhere? Without logging, I won't have anyway to know if my users are having errors that don't occur on the server. The GWT.log() function is automatically stripped out of the production code...

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• Removing a Preceding Backslash from Apostrophes

  - by John

  Hello, When I add a comment using the variable below, apostrophes are printed with a backslash in front of them. How can I get rid of the backslashes? Thanks in advance, John Example of printed result: My roommate\'s brother\'s ex-girlfriend\'s aunt drive a Toyota. $comment = mysql_real_escape_string($_POST['comment']);

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• How to add a context processor from a Django app

  - by Edan Maor

  Say I'm writing a Django app, and all the templates in the app require a certain variable. The "classic" way to deal with this, afaik, is to write a context processor and add it to TEMPLATE_CONTEXT_PROCESSORS in the settings.py. My question is, is this the right way to do it, considering that apps are supposed to be "independent" from the actual project using them? In other words, when deploying that app to a new project, is there any way to avoid the project having to explicitly mess around with its settings?

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• XPath - get parent node

  - by chris.shi

  //* [ local-name()='component' and namespace-uri()='urn:hl7-org:v3' ] using thispath ,I can get a node like this: <component xmlns="urn:hl7-org:v3"> <structuredBody> <component> <section> <code code="10164-2" codeSystem="2.16.840.1.113883.6.1" codeSystemName="LOINC"/> <title>History of Present Illness</title> <text> </text> </section> </component> <component> ...... </component> <component> ...... </component> <structuredBody/> <component/> in order to get the node as below: <component> <section> <code code="10164-2" codeSystem="2.16.840.1.113883.6.1" codeSystemName="LOINC"/> <title>History of Present Illness</title> <text> </text> </section> </component> I change the path to : //* [ local-name()='component' and namespace-uri()='urn:hl7-org:v3' and position()=1] but ,how can I get the same result by using [code="10164-2"] as a qualification. ( I do not know how to describe this question ,as a result ,the title of this question is a little simple ,sorry .) thanks

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