using-directives

I have a silly problem with Twitterizer2 and probably me :) . I add the reference twitterizer 2.3.1 from my downloads directory along with the newtonsoft one by right clicking on references and browsing to find them. I then add using Twitterizer; lo and behold all my squiggly red underlines go away on all this sort of code: OAuthTokens tokens = new OAuthTokens(); when I go to run it(with debug), I get an error: Error 2 The type or namespace name 'Twitterizer' could not be found (are you missing a using directive or an assembly reference?) Now using Twitterizer; becomes in error(red and

We are new to angularjs v4. We have a requirement of drilldown charts in google charts. We are using ng2-google-charts directives. We are able to find the select event and updated the data. but chart is not reloading. Could any one please help on this. view: index.html <pre> <br/> <google-chart #drillchart [data]='pieChartData' type="BarChart" (chartSelect)='select($event)'> </google-chart> </pre> Component.ts: pieChartData = { chartType: 'BarChart', dataTable: [ ['Country', 'Poulation'], ['Ind', 25], ['Rus', 10], ['Chi', 30], ['USA', 15], ['UK', 12], ['Aus', 8] ], options: {'title':

Sometimes I find code like the following (actually some class-wizards create such code): // C.h namespace NS { class C { void f(); }; } and in the implementation file: // C.cpp #include "C.h" using namespace NS; void C::f() { //... } All the compilers I tried accept that kind of code (gcc, clang, msvc, compileonline.com). What makes me feel uncomfortable is the using namespace NS; . From my point of view C::f() lives in the global namespace in an environment that has unqualified access to objects living in namespace NS. But in the compiler's opinion void C::f() lives in namespace NS . As all

In VB.Net you can do something like the following without any issues... just ignore the fact that this is a pretty useless class :-) Imports System Public Class Class1 Public Shared Function ArrayToList(ByVal _array() As String) As Collections.Generic.List(Of String) Return New Collections.Generic.List(Of String)(_array) End Function End Class However if you do the same thing in C#... using System; public class Class1 { public static Collections.Generic.List ArrayToList(string[] _array) { return new Collections.Generic.List(_array); } } You will get an error on the line with the return on

I'm wondering where to put using namespace std; . I saw a code with the using namespace std; in the int main(){} but I was putting it after #include <iostream> . Where should I put it and does it make any difference where I put it? Peter Alexander It makes a huge difference where you put it. If you put it inside a function, then it only applies in that function. If you put it outside a function in global scope then it applies to everything after that point. If you put it outside a function in global scope in a header file then it will even apply to ever file that includes that header.

Consider this library header: #include<vector> #include<algorithm> #include<iostream> namespace Lib { namespace detail { using namespace std; template<class T> void sort_impl(istream &in,ostream &out) { vector<T> v; { int n; in >> n; v.resize(n); } for(auto &i : v) cin >> i; sort(v.begin(),v.end()); for(auto i : v) out << i << endl; } } inline void sort_std() { detail::sort_impl<int>(std::cin,std::cout); } } Does the detail namespace successfully isolate the clients of the library (and the rest of library's implementation) from the using-directive in this example? I'm not interested in the