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Why does .NET foreach loop throw NullRefException when collection is null?
So I frequently run into this situation... where Do.Something(...) returns a null collection, like so:
11 Answers
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How do detect Android Tablets in general. Useragent?
I have looked everywhere. We are using a Motorola Zoom to try our tablet site testing.
The issue is that the Android Useragent is a general Useragent and there is no difference between tablet Android and mobile Android. I don't want to just target a specific device like the Xoom Useragent since And...
Getting All Variables In Scope
Is there a way to get all variables that are currently in scope in javascript?
10 Answers
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Why Android Studio says “Waiting For Debugger” if am NOT debugging?
I am working with Android Studio. Since last night, when I Run my project on my device, appear the message "Waiting For Debugger". It is a very strange behavior because I am not debugging application.
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join list of lists in python [duplicate]
Is the a short syntax for joining a list of lists into a single list( or iterator) in python?
15 Answers
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How to Store Historical Data
Some co-workers and I got into a debate on the best way to store historical data. Currently, for some systems, I use a separate table to store historical data, and I keep an original table for the current, active record. So, let's say I have table FOO. Under my system, all active records will go ...
Is there an interactive way to learn Vim? [closed]
Years ago I was looking for a way to learn Vim that didn't involve a wall of text, or scrolling through vimtutor without knowing the commands to do so. I wondered if anything else existed for such a purpose.
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Checking length of dictionary object [duplicate]
I'm trying to check the length here. Tried count. Is there something I'm missing?
4 Answers
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Using Ajax.BeginForm with ASP.NET MVC 3 Razor
Is there a tutorial or code example of using Ajax.BeginForm within Asp.net MVC 3 where unobtrusive validation and Ajax exist?
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How to write a simple database engine [closed]
I am interested in learning how a database engine works (i.e. the internals of it). I know most of the basic data structures taught in CS (trees, hash tables, lists, etc.) as well as a pretty good understanding of compiler theory (and have implemented a very simple interpreter) but I don't understa...