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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:
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How do I print to the debug output window in a Win32 app?
I've got a win32 project that I've loaded into Visual Studio 2005. I'd like to be able to print things to the Visual Studio output window, but I can't for the life of me work out how. I've tried 'printf' and 'cout
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Read and write a String from text file
I need to read and write data to/from a text file, but I haven't been able to figure out how.
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How to convert PascalCase to pascal_case?
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Generate array of all letters and digits
Using ruby, is it possible to make an array of each letter in the alphabet and 0-9 easily?
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How to create a HashMap with two keys (Key-Pair, Value)?
I have a 2D array of Integers. I want them to be put into a HashMap. But I want to access the elements from the HashMap based on Array Index. Something like:
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Why is “origin/HEAD” shown when running “git branch -r”?
When you run git branch -r why the blazes does it list origin/HEAD ? For example, there's a remote repo on GitHub, say, with two branches: master and awesome-feature. If I do git clone to grab it and then go into my new directory and list the branches, I see this:
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How to get arguments with flags in Bash
I know that I can easily get positioned parameters like this in bash:
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How to migrate back from initial migration in Django 1.7?
I created a new app with some models and now I noticed that some of the models are poorly thought out. As I haven't committed the code the sensible thing would be to migrate the database to last good state and redo the migration with better models. In this case the last good state is database where ...
Revert to a commit by a SHA hash in Git? [duplicate]
I'm not clear on how git revert works. For example, I want to revert to a commit six commits behind the head, reverting all the changes in the intermediary commits in between.
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