Search Results

Search found 4717 results on 189 pages for 'namespace'.

Page 104/189 | < Previous Page | 100 101 102 103 104 105 106 107 108 109 110 111  | Next Page >

  • Misunderstanding function pointer - passing it as an argument

    - by Stef
    I want to pass a member function of class A to class B via a function pointer as argument. Please advise whether this road is leading somewhere and help me fill the pothole. #include <iostream> using namespace std; class A{ public: int dosomeA(int x){ cout<< "doing some A to "<<x <<endl; return(0); } }; class B{ public: B(int (*ptr)(int)){ptr(0);}; }; int main() { A a; int (*APtr)(int)=&A::dosomeA; B b(APtr); return 0; } This brilliant piece of code leaves me with the compiler error: cannot convert int (A::*)(int)' toint (*)(int)' in initialization Firstly I want it to compile. Secondly I don't want dosomeA to be STATIC.

    Read the article

  • How can I Find out what BCL types a custom type is using its method?

    - by dotnetdev
    If I have a class, eg T1, and I want to know what classes in the BCL it is using, how could I do this? I came up with this: T1.GetType().GetMethods().Where(x => x.DeclaringType.Namespace == "System"); But this will get all methods in my custom type, but I want to look inside each Method, so I was hoping I could do something like: T1.GetType().GetMethods().BodyTypesUsed; to check if my method uses a type like Streamwriter. How could I achieve this?

    Read the article

  • Is PThread a good choice for multi-platorm C/C++ multi-threading program?

    - by RogerV
    Been doing mostly Java and smattering of .NET for last five years and haven't written any significant C or C++ during that time. So have been away from that scene for a while. If I want to write a C or C++ program today that does some multi-threading and is source code portable across Windows, Mac OS X, and Linux/Unix - is PThread a good choice? The C or C++ code won't be doing any GUI, so won't need to worry with any of that. For the Windows platform, I don't want to bring a lot of Unix baggage, though, in terms of unix emulation runtime libraries. Would prefer a PThread API for Windows that is a thin-as-possible wrapper over existing Windows threading APIs. ADDENDUM EDIT: Am leaning toward going with boost:thread - I also want to be able to use C++ try/catch exception handling too. And even though my program will be rather minimal and not particularly OOPish, I like to encapsulate using class and namespace - as opposed to C disembodied functions.

    Read the article

  • gtk-sharp-2.0 hide/show external applications(processes)

    - by ziuciek
    Hi, maybe the topic isn't quite precise.. i want to write in c# (gtk#-2.0) an app which opens another app hidden and later shows that app. For now i know only how to open hidden app... in windows...: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; namespace do_kasacji { class Program { static void Main(string[] args) { ProcessStartInfo info = new ProcessStartInfo(); info.WindowStyle = ProcessWindowStyle.Minimized; info.FileName = "notepad"; using (Process pr = Process.Start(info)) { pr.WaitForExit(); } } } } Anyone knows how to change it so hat it would run in linux?

    Read the article

  • char pointer array in c#

    - by james
    consider the following c++ code #include "stdafx.h" #include<iostream> using namespace std; void ping(int,char* d[]); void ping(int a,char *b[]) { int size; size=sizeof(b)/sizeof(int); // total size of array/size of array data type //cout<<size; for(int i=0;i<=size;i++) cout<<"ping "<<a<<b[i]<<endl; } int _tmain(int argc, _TCHAR* argv[]) { void (*funcptr)(int,char* d[]); char* c[]={"a","b"}; funcptr= ping; funcptr(10,c); return 0; } how can i implement the same in c#.. m new to c#. how can i have char pointer array in c#?

    Read the article

  • get look up a string given a func<T,object> param

    - by Sammy
    given this code namespace GridTests { public class Grid<T> { IEnumerable<T> DataSource { get; set; } IList<Column> Columns = new List<Column>(); class Column { public string DisplayText { get; set; } Func<T, object> Rowdata { get; set; } } } } I need to be able to loop through the columns collection and get the Rowdata's object value using the DisplayText. Thanks

    Read the article

  • Get REST Call is not returning the string I put in url

    - by wizage
    I have very simple code: using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Net.Http; using System.Web.Http; namespace Calculator.Controllers { public class CalcController : ApiController { public string Get(string type) { return type; } } } And this is what it returns when I type in http://www.example.com/api/calc/test <string xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/2003/10/Serialization/" i:nil="true"/> When I use http://www.example.com/api/calc/?test=test it returns this: <string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">type</string> How to I make it so I can just do the top one instead of the bottom one?

    Read the article

  • Send JSON date to WCF service

    - by user1394569
    I want to post json object to my WCF service My only problem is his date property. I get the date from an jquery datepicker and i want to get it in my service as c# datetime. My service: namespace Employee { [ServiceContract] public interface IService1 { [OperationContract] [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)] bool UpdateEmployee(Employee Employee); } } And this is Employee: [DataContract] public class Employee { [DataMember] public string Name { get; set; } [DataMember] public string Department { get; set; } [DataMember] public int Salary { get; set; } [DataMember] public DateTime Hired { get; set; } } All the other properties work fine. I just need to convert my date string to json date.

    Read the article

  • Where to declare variable? C#

    - by user1303781
    I am trying to make an average function... 'Total' adds them, then 'Total' is divided by n, the number of entries... No matter where I put 'double Total;', I get an error message. In this example I get... Use of unassigned local variable 'Total' If I put it before the comment, both references show up as error... I'm sure it's something simple..... namespace frmAssignment3 { class StatisticalFunctions { public static class Statistics { //public static double Average(List<MachineData.MachineRecord> argMachineDataList) public static double Average(List<double> argMachineDataList) { double Total; int n; for (n = 1; n <= argMachineDataList.Count; n++) { Total = argMachineDataList[n]; } return Total / n; } public static double StDevSample(List<MachineData.MachineRecord> argMachineDataList) { return -1; } } } }

    Read the article

  • Error when customize ValidationMessageFor

    - by user1542080
    i want to customize ValidationMessageFor which display error. when i run application, a get an error : No overload for method 'ValidationMessageFor' takes 1 arguments I'm understand my error, but i don't know how to fix it ? I need some suggest . Thanks you for reading! My code : using System.Linq.Expressions; using System.Web; using System.Web.Mvc; namespace OurCompanyUI.app_code { public static class MyHtml { public static MvcHtmlString ValidationMessageFor<TModel, TProperty>( this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, string validationMessage, IDictionary<string, Object> htmlAttributes ) { string modelName = ExpressionHelper.GetExpressionText(expression); TagBuilder p = new TagBuilder("p"); p.InnerHtml = htmlHelper.ValidationMessageFor(htmlHelper,expression).ToString(); // p.InnerHtml = htmlHelper.ValidationMessageFor().ToString(); return MvcHtmlString.Create(p.ToString(TagRenderMode.Normal)); } } }

    Read the article

  • How to update a vector in method

    - by gurpinars
    I'm new to C++ and trying to understand vectors. My goal is to update a vector in method: #include <vector> #include <iostream> using namespace std; void test(vector<int>& array){ for(int i=0;i<10;i++){ array.push_back(i); } } int main(){ // some integer value vector<int> array(10); test(array); for(int i=0;i<array.size();++i) cout<<array.at(i)<<endl; cout<<"array size:"<<array.size()<<endl; return 0; } output: 0 0 0 0 0 0 0 0 0 0 0 1 2 3 4 5 6 7 8 9 array size:20 I haven't figure out why 10 zeros add vector at first?

    Read the article

  • how toaccess the attributes in another form? c#

    - by Chelsea_cole
    I have a problem in a same namespace: public partial class frmForm1 : Form // Form1 { public class Account { public string Username; public string Password; } public class ListAcc { public static int count = 0; private static List<Account> UserList; public static List<Account> Data() { return UserList; } } } public partial class frmForm2 : Form // Form2 { private void button2_Click(object sender, EventArgs e) { frmForm1.Account A; string m = frmForm1.ListAcc<A>.[0].Username; //ERROR } } How could i access the attributes (Username, Password...) in frmForm1? Someone help me? Thanks!

    Read the article

  • How to discard const in c++

    - by Vincenzo
    This is what I'm trying to do and I can't: #include <string> using namespace std; class A { bool has() const { return get().length(); } string& get() { return s; } private: string s; }; The error I'm getting is: passing ‘const A’ as ‘this’ argument of ‘std::string& A::get()’ discards qualifiers I understand what the problem is, but how can I fix it? I really need has() to be const. Thanks.

    Read the article

  • Is read-only auto-imlemented property possible?

    - by abatishchev
    Hello. I found a topic on MSDN that talks that yes, this is possible. I did a test that seems to break this statement: using System; namespace Test { class Program { static void Main(string[] args) { Foo f = new Foo("1"); Console.WriteLine(f.Bar); // prints 1 f.Test("2"); Console.WriteLine(f.Bar);// successfully prints 2 } } class Foo { public Foo(string b) { this.Bar = b; } public string Bar { get; private set; } public void Test(string b) { // this would be impossible for readonly field! // next error would be occur: CS0191 or CS0191 // A readonly field cannot be assigned to (except in a constructor or a variable initializer) this.Bar = b; } } } Where am I wrong?

    Read the article

  • XAML Binding to property

    - by imslavko
    I have check box in my XAML+C# Windows Store application. Also I have bool property: WindowsStoreTestApp.SessionData.RememberUser which is public and static. I want check box's property IsChecked to be consistent (or binded, or mapped) to this bool property. I tried this: XAML <CheckBox x:Name="chbRemember1" IsChecked="{Binding Mode=TwoWay}"/> C# chbRemember1.DataContext = SessionData.RememberUser; Code for property: namespace WindowsStoreTestApp { public class SessionData { public static bool RememberUser { get; set; } } } But it doesn't seem to work. Can you help me?

    Read the article

  • C++0x error : variable 'std::packaged_task<int> pt1' has initializer but incomplete type

    - by Eternal Learner
    Hi All, Below is a simple program in c++0x that makes use of packaged_task and futures. while compiling the program i get error : variable 'std::packaged_task pt1' has initializer but incomplete type the program is below #include #include using namespace std; int printFn() { for(int i = 0; i < 100; i++) { cout << "thread " << i << endl; } return 1; } int main() { packaged_task<int> pt1(&printFn); future<int> fut = pt1.get_future(); thread t(move(pt1)); t.detach(); int value = fut.get(); return 0; }

    Read the article

  • how-to initialize 'const std::vector<T>' like a c array

    - by vscharf
    Is there an elegant way to create and initialize a const std::vector<const T> like const T a[] = { ... } to a fixed (and small) number of values? I need to call a function frequently which expects a vector<T>, but these values will never change in my case. In principle I thought of something like namespace { const std::vector<const T> v(??); } since v won't be used outside of this compilation unit.

    Read the article

  • Picking photo from Photochooser or holding hardware back button cause active timers ring

    - by Nznoonee
    This is very strange problem, and all the people I had asked to confirm it said that it takes place. I have a Threading.Timer instance which fires every 15 minutes. And if I call the PhotoChooser view and then select a photo from it, when going back to the calling page my application calls that timer's callback! I tried different timers either it be Timer from Threading namespace or Dispatcher timer. The same happens when being in my app I hold the back button of my device and then choose the app from the list. My application is as plain as it can be - the timer with a callback and method calling PhotoChooser. Could anyone help with solution or workaround please?

    Read the article

  • Why are namespaces acting up in Visual Studio 2010?

    - by duluca
    I've just converted a project to VS 2010 and something really weird is going on with namespaces. Let me give an example, the following code used to work in VS2008: MySystem.Core.Object { using MySystem.Core.OtherObject; ... } But now it doesn't, it either wants the whole thing to be put outside of the namespace like this: using MySystem.Core.OtherObject; MySystem.Core.Object { ... } or be rewritten it like: MySystem.Core.Object { using OtherObject; ... } I understand why this works and maybe is the correct way of handling this, but now we'd have to change thousands of lines of code! Which is not cool. Any idea to circumvent this requirement?

    Read the article

  • Strings in ASP?

    - by TSL
    Hi All, I have some APSX code that I am trying to modify for a programmer that is out on medicaly leave. I am not an ASP guy, but rather C++ So what I want to do is delare a string, check the first 4 characters and if it is 'http' do something, if not, something else. Here is what I have: string strYT= Left(objFile, 4); if (strYT=="http") { pnlYT.Visible = true; pnlIntro.Visible = false; pnlVideo.Visible = false; } else { pnlYT.Visible = false; pnlIntro.Visible = false; pnlVideo.Visible = true; PrintText(objFile); } But I get errors like: Compiler Error Message: CS0103: The name 'Left' does not exist in the class or namespace 'ASP.zen_aspx' My googling turns up many examples of doing it just like this.....

    Read the article

  • How to compare string with const char*?

    - by arzeth
    #include <stdlib.h> #include <stdio.h> #include <iostream> #include <string.h> using namespace std; int main() { string cmd; while(strcmp(cmd.c_str(),"exit")==0 && strcmp(cmd.c_str(),"\exit")==0) { cin>>cmd; cout<<cmd; } return 0; } I am stuck.

    Read the article

  • why can not see my method if i implamented interface to normal class?

    - by Phsika
    i can not see MyLoad.TreeLoader(.... but why i can not see? i implemented iloader to TreeViewLoad. i should see TreeLoader why? namespace Rekursive { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { //treeView1.Nodes.Add("Test"); iloader MyLoad = new TreeViewLoad(); MyLoad.loader("test", treeView1, 1); // i can not see MyLoad.TreeLoader(.... but why i can not see? // i implemented iloader to TreeViewLoad. i should see TreeLoader why? //TreeViewLoad myloader = new TreeViewLoad(); } } interface iloader { void loader(string nodeName, TreeView myTre, int id); } class TreeViewLoad : iloader { public void TreeLoader(TreeView tre) { // i will call loader... } public void loader(string nodeName, TreeView myTre, int id) { myTre.Nodes.Add(nodeName + id.ToString()); if (id

    Read the article

  • can't compile min_element in c++

    - by Vincenzo
    This is my code: #include <algorithm> #include <vector> #include <string> using namespace std; class A { struct CompareMe { bool operator() (const string*& s1, const string*& s2) const { return true; } }; void f() { CompareMe comp; vector<string*> v; min_element(v.begin(), v.end(), comp); } }; And this is the error: error: no match for call to ‘(A::CompareMe) (std::string*&, std::string*&)’ test.cpp:7: note: candidates are: bool A::CompareMe::operator()(const std::string*&, const std::string*&) const I feel that there is some syntax defect, but can't find out which one. Please, help!

    Read the article

  • Can typeid() be used to pass a function?

    - by Kerb_z
    I tried this and got the output as: void Please explain the following Code: #include <cstdio> #include <typeinfo> using namespace std ; void foo() { } int main(void) { printf("%s", typeid(foo()).name());// Please notice this line, is it same as typeid( ).name() ? return 0; } AFAIK: The typeid operator allows the type of an object to be determined at run time. So, does this sample code tell us that a function that returns void is of *type void*. I mean a function is a method and has no type. Correct?

    Read the article

  • help for hindi programming

    - by yogeshbablu
    #include<wchar.h> #include<iostream> using namespace std; int main(int argc,char* argv[]) { fputws(L"?? ?? ?????? ????",stdout); return 0; } ?? ?? ?????? ??? is displayed when i run it on ubuntu can anybody help me out?

    Read the article

< Previous Page | 100 101 102 103 104 105 106 107 108 109 110 111  | Next Page >