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  • viewing files in python?

    - by Galilsnap
    I am creating a sort of "Command line" in Python. I already added a few functions, such as changing login/password, executing, etc., But is it possible to browse files in the directory that the main file is in with a command/module, or will I have to make the module myself and use the import command? Same thing with changing directories to view, too.

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  • I want to compile a batch file into an exe using c++, i can get through parsing the batch file and w

    - by Nareshkumar Rao
    Ok, here's the thing, I am creating an application in DevC++ that will read in a batch file. then, one by one parsing it using: system(getline(myfile,line)); After setting everything up, I save the newly created file as "main.cpp". The problem is, I want to compile it into an exe, from my program, for the end user. So basically, I'm asking whether I can compile a C++ file from a C++ Exe..

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  • Finding subtitute pluggin (After Switching from Notepad++ to Netbeans 6.8)

    - by justjoe
    i would like to ask about some Notepad++ feature that i couldn't find in netbeans. And this feature is somehow really helpful. It's called 'function list' created by Jens Lorenz. this feature will list all of declared function in a PHP files. So, is there any subtitute plugin that i can use to smooth my migration from Notepad++ to Netbeans ? the main reason i switch is for svn, Phpdoc-support, and easiness maintaining medium-size web project.

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  • string s; &s+1; Legal? UB?

    - by John Dibling
    Consider the following code: #include <cstdlib> #include <iostream> #include <string> #include <vector> #include <algorithm> using namespace std; int main() { string myAry[] = { "Mary", "had", "a", "Little", "Lamb" }; const size_t numStrs = sizeof(myStr)/sizeof(myAry[0]); vector<string> myVec(&myAry[0], &myAry[numStrs]); copy( myVec.begin(), myVec.end(), ostream_iterator<string>(cout, " ")); return 0; } Of interest here is &myAry[numStrs]: numStrs is equal to 5, so &myAry[numStrs] points to something that doesn't exist; the sixth element in the array. There is another example of this in the above code: myVec.end(), which points to one-past-the-end of the vector myVec. It's perfecly legal to take the address of this element that doesn't exist. We know the size of string, so we know where the address of the 6th element of a C-style array of strings must point to. So long as we only evaluate this pointer and never dereference it, we're fine. We can even compare it to other pointers for equality. The STL does this all the time in algorithms that act on a range of iterators. The end() iterator points past the end, and the loops keep looping while a counter != end(). So now consider this: #include <cstdlib> #include <iostream> #include <string> #include <vector> #include <algorithm> using namespace std; int main() { string myStr = "Mary"; string* myPtr = &myStr; vector<string> myVec2(myPtr, &myPtr[1]); copy( myVec2.begin(), myVec2.end(), ostream_iterator<string>(cout, " ")); return 0; } Is this code legal and well-defined? It is legal and well-defined to take the address of an array element past the end, as in &myAry[numStrs], so should it be legal and well-defined to pretend that myPtr is also an array?

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  • why do you write tests and what is a unit test and how does it differ other types of testing ?

    - by dfafa
    im curious as to know, why tests are written? why would bother writing it ? why not just compile and run the code or view it in your browser, click around and test out stuff. i mean i can understand, a crawler that checks your web app's functions....but why is tests written, maintained and treated as important as the main feature codes ? is it crucial to always write and use tests ?

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  • Why can't my function access a variable in an enclosing function?

    - by nailer
    I know about the LEGB rule. But a simple test of whether a function has read access to variables defined in an enclosing function doesn't seem to actually work. Ie: #!/usr/bin/env python2.4 '''Simple test of Python scoping rules''' def myfunction(): print 'Hope this works: '+myvariable def enclosing(): myvariable = 'ooh this worked' myfunction() if __name__ == '__main__': enclosing() Returns: NameError: global name 'myvariable' is not defined Am I doing something wrong? Is there more to it than the LEGB resolution order?

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  • VB Script Creating variable on the fly returned Error Automation type not supported

    - by chazzuka
    I have list of variables in an include files which is looks like: var_1 = "string" var_2 = "string" on the main file i need variable created on the fly so i do ' somewhere i have the num variable Execute("new_var = var_"&num) Exactly on the execute line i got this error Microsoft VBScript runtime error '800a01ca' Variable uses an Automation type not supported in VBScript Any idea guys? thanks

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  • Fix buttons at the bottom of the screen.

    - by Wilson
    I am a beginner in Android programming. I want to build a simple application with a main list view in the screen and two buttons at the bottom of the screen. When more items are added to the list view, the list view should scroll without increasing the overall length of the list view.

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  • How to access the map returned by IParameterValues::getParameterValues()?

    - by Hua
    I declared a command and a commandParameter for this command. I specified the "values" of this commandParameter as a class implemented by myself. The implementation of this class is below, public class ParameterValues implements IParameterValues { @Override public Map<String, Double> getParameterValues() { // TODO Auto-generated method stub Map<String, Double> values = new HashMap<String, Double>(2); values.put("testParam", 1.1239); values.put("AnotherTest", 4.1239); return values; } } The implementation of the handler of this command is blow, public class testHandler extends AbstractHandler implements IHandler { private static String PARAMETER_ID = "my.parameter1"; @Override public Object execute(ExecutionEvent event) throws ExecutionException { String value = event.getParameter(PARAMETER_ID); MessageDialog.openInformation(HandlerUtil.getActiveShell(event), "Test", "Parameter ID: " + PARAMETER_ID + "\nValue: " + value); return null; } } Now, I contribute the command to a menu, <menuContribution locationURI="menu:org.eclipse.ui.main.menu"> <menu id="my.edit" label="Edit"> <command commandId="myCommand.test" label="Test1"> <parameter name="my.parameter1" value="testParam"> </parameter> </command> Since I specified a "values" class for the commandParater, I expect when the menu is clicked, this code line "String value = event.getParameter(PARAMETER_ID);" in the handler class returns 1.1239 instead of "testParam". But, I still see that code line returns "testParam". What's the problem? How could I access the map returned by getParameterValues()? By the way, following menu declaration still works even I don't define "ppp" in the map. <menuContribution locationURI="menu:org.eclipse.ui.main.menu"> <menu id="my.edit" label="Edit"> <command commandId="myCommand.test" label="Test1"> <parameter name="my.parameter1" value="ppp"> </parameter> </command> Thanks!

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  • getopt implicit declaration in Solaris?

    - by Steven
    In Solaris, gcc gives me implicit declaration of function `getopt' when compiling #include <unistd.h> #include <stdlib.h> int main(int argc, char *argv[]) { getopt(1,argv,""); return 0; } The man page for getopt says something about including unistd.h or stdio.h, however even though I'm inluding both I still get this warning. Is this normal? Is using functions that aren't explicitly declared common in Unix development?

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  • Is it possible to store only a checksum of a large file in git?

    - by Andrew Grimm
    I'm a bioinformatician currently extracting normal-sized sequences from genomic files. Some genomic files are large enough that I don't want to put them into the main git repository, whereas I'm putting the extracted sequences into git. Is it possible to tell git "Here's a large file - don't store the whole file, just take its checksum, and let me know if that file is missing or modified." If that's not possible, I guess I'll have to either git-ignore the large files, or, as suggested in this question, store them in a submodule.

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  • Android ListView in Activity

    - by Dev.Android
    My layout is like this Title Layout Listview BottomLayout. I have an 150 item which i have custom layout which i want to add in listview. So my main problem is i want to add slowly slowly one by one that customlayouts in listview. So whenever the first screen is displayed i want load 10 items from server and add it to listview.then onscroll down i want to load the remaining 10 items from 150 cutom layouts. So how can I do this activity?

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  • Problem creating a webpage in OOP pattern?

    - by Starx
    I want to develop a website in OOP pattern, but I am stuck in a point whether I need to inherit from multiple classes. For example I have a main class "index" this class has several methods which need to inherited from other classes and I have created seperate classes for it like class "banner", class "content", class "footer" Not only this but class "content" has several methods to be inherited from other classes like class "gallery", class "news", etc I found out that multiple inheritance is not allowed, and using interface I cannot write codes in its methods, so how can i achieve a solution for this problem.

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  • Xcode: Is there a location/flag to prevent a Class from compiling?

    - by Meltemi
    Is there a place (or flag) in Xcode for files that you don't want to compile? There are some classes that are/may become part of a project but currently won't compile. The main project doesn't link to them but Xcode still tries to compile them. Is there a way to prevent blocking the rest of project from compiling until these new Classes are "ready"?

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  • Qt gstreamer problem

    - by ZolaKt
    Ptterb can you post your full code please? I copied your code. Added fvidscale_cap to pipeline, with: self.player.add(self.source, self.scaler, self.fvidscale_cap, self.sink) gst.element_link_many(self.source,self.scaler, self.fvidscale_cap, self.sink) From the main program I create a new QWidget, and pass its winId() to Vid constructor. The widget start loading, but crashes. The output says: should be playing Segmentation fault

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  • execl doesn't work in a while(1) cicle, server side; C script

    - by Possa
    Hi guys, I have a problem with a little C script who should run as a server and launch a popup for every message arriving. The execl syntax is correct because if I try a little script with main() { execl(...); } it works. When I put it in a while(1) cicle it doesn't work. Everything else is working, like printf or string operation, but not the execl. Even if I fork it doesn't work. I really don't know what I can do ... can anyone help me? Thanks in advice for your help and sorry for my bad english. Here's the complete server C code. #include <arpa/inet.h> #include <netinet/in.h> #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <sys/socket.h> #include <unistd.h> #include <string.h> #define BUFLEN 512 #define PORT 9930 void diep(char *s) { perror(s); exit(1); } int main() { struct sockaddr_in si_me, si_other; int s, i, slen=sizeof(si_other), broadcastPermission; char buf[100], zeni[BUFLEN]; if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1) diep("socket"); broadcastPermission = 1; if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, (void *) &broadcastPermission, sizeof(broadcastPermission)) < 0) diep("setsockopt() failed"); memset((char *) &si_me, 0, sizeof(si_me)); si_me.sin_family = AF_INET; si_me.sin_port = htons(PORT); si_me.sin_addr.s_addr = htonl(INADDR_ANY); if (bind(s, &si_me, sizeof(si_me))==-1) diep("bind"); while (1) { if (recvfrom(s, buf, BUFLEN, 0, &si_other, &slen)==-1) diep("recvfrom()"); //printf("Received packet from %s:%d\nData: %s\n", inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf); strcpy(zeni, ""); strcat(zeni, "zenity --warning --title Hack!! --text "); strcat(zeni, buf); printf("cmd: %s\n", zeni); //system (zeni); execl("/usr/bin/zenity", "/usr/bin/zenity", "--warning", "--title", "Warn!", "--text", buf, (char *) NULL); } close(s); return 0; }

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