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Why use the yield keyword, when I could just use an ordinary IEnumerable?
...ion lazy.
Let's say you just need the first five items. Your way, I have to loop through the entire list to get the first five items. With yield, I only loop through the first five items.
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android: stretch image in imageview to fit screen
I have an imageview that has its height and width set to fill_parent with a linearlayout that has the same values set. So I suppose this should set my images to fit the screen. But it only fits like 80% (margin top and bottom in landscape mode).
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How to reference style attributes from a drawable?
I want to have 2 selectable themes for my application. In order to do that, I defined some attributes, like this:
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Java rounding up to an int using Math.ceil
Why does it still return 4? 157/32 = 4.90625 , I need to round up, I've looked around and this seems to be the right method.
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When is “Try” supposed to be used in C# method names?
...TryParse pattern for members that may throw exceptions in common scenarios to avoid performance problems related to exceptions.
Thus if you have code for which a regular use case would mean that it might throw an exception (such as parsing an int), the TryParse pattern makes sense.
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What is the difference between Step Into and Step Over in the Eclipse debugger?
I want to debug the whole flow of a Java program. What is the difference between F5 (step into) and F6 (step over) in eclipse?
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What does -> mean in Python function definitions?
...on annotation.
In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return values.
There's no preco...
Rails and PostgreSQL: Role postgres does not exist
...led PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.
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What is the difference between lock and Mutex?
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A lock is specific to the AppDomain, while Mutex to the Operating System allowing you to perform inter-process locking and synchronization (IPC).
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fatal: Not a valid object name: 'master'
...A non-bare git init will also create the same files, in a hidden .git directory in the root of your project.
When I type git branch master it says "fatal: Not a valid object name: 'master'"
That is again correct behaviour. Until you commit, there is no master branch.
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