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Carroll Altenwerth

Questions by Carroll Altenwerth

Web scrape weather table?

I am trying to web scrape the weather data, and need to take the table and convert to csv format. But not all the en...

Only secure origins are allowed (see: https://goo.gl/Y0ZkNV)?

Webcam not working. it display on a console that "Only secure origins are allowed", I accessing the web app in the ...

plot circle with gradient gray scale color in matlab?

I want to draw a circle with gradient color in matlab, but I can't. Is there any one that can help me? the sample i...

Can a database table be without a primary key??

Can anyone tell me if a table in a relational database (such as MySQL / SQL SERVER) can be without a primary key? F...

Semicolon after class declaration braces?

In C++ classes, why the semi-colon after the closing brace? I regularly forget it and get compiler errors, and hence...

DataSet does not support System.Nullable<> in Export?

I was trying to generate a Report using Export to Excell, PDF, TextFile. Well I am doing this in MVC. I have a class...

preg_match_all JS equivalent??

Is there an equivalent of PHP's preg_match_all in Javascript? If not, what would be the best way to get all matches ...

Understanding the runat server attribute?

I'm really new to ASP.NET. I was just checking out a default ASP.NET web application. It comes by default with a fe...

plot is not defined?

I started to use matplotlib library to get a graph. But when I use "plot(x,y)" it returns me that "plot is not defi...

The model item passed into the dictionary is of type .. but this dictionary requires a model item of type?

This question and community wiki answer has been added to assist in closing out numerous unanswered questions as dis...

where does Silverlight app's executable/assembly/whatever actually get installed on my hard drive??

I installed a silverlight app on Windows 7, it put up a shortcut on the desktop and it works fine. E.g. works fine w...

cmath vs math.h (And similar c-prefixed vs .h extension headers)?

I've seen some information about differences between things like iostream vs iostream.h. From what I gathered from t...

invalid use of template name without an argument list?

I am facing a problem with my linked list class, I have created the interface and implementation files of the class,...

Random float number generation?

How do I generate random floats in C++? I thought I could take the integer rand and divide it by something, would t...