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Why do we use arrays instead of other data structures?
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Time to go back in time for a lesson. While we don't think about these things much in our fancy managed languages today, they are built on the same foundation, so let's look at how memory is managed in C.
Before I dive in, a quick explanation of what the term "pointer" m...
What optimizations can GHC be expected to perform reliably?
GHC has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances.
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How do I set up email confirmation with Devise?
...ation email from scratch (in both development and production), i.e. if you don't have Action Mailer set up?
3 Answers
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How do I remove the passphrase for the SSH key without having to create a new key?
...e (which can be left blank to have no passphrase).
If you would like to do it all on one line without prompts do:
$ ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]
Important: Beware that when executing commands they will typically be logged in your ~/.bash_history file (or s...
How to use knockout.js with ASP.NET MVC ViewModels?
...e would be nice =))
Note. Compatibility with the ko.editable plug-in added
Download the full code
How do you use html helpers with knockout.js
This is easy:
@Html.TextBoxFor(model => model.CourseId, new { data_bind = "value: CourseId" })
Where:
value: CourseId indicates that you are binding the...
When/Why to use Cascading in SQL Server?
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Summary of what I've seen so far:
Some people don't like cascading at all.
Cascade Delete
Cascade Delete may make sense when the semantics of the relationship can involve an exclusive "is part of" description. For example, an OrderLine record is part of its parent...
List comprehension vs map
...a list comprehension in python because it will be more obvious what you're doing to novice programmers reading your code. (This does not apply to other languages, where other idioms may apply.) It will even be more obvious what you're doing to python programmers, since list comprehensions are the de...
Does it make sense to do “try-finally” without “catch”?
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Why does this code do it this way?
Because apparently the code doesn’t know how to handle exceptions at this level. That’s fine – as long as one of the callers does, i.e. as long as the exception gets ultimately handled s...
Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
...t with.
There's no support for 'did-you-mean', etc - although these can be done with other tools easily enough. Sphinx does stem words though using dictionaries, so 'driving' and 'drive' (for example) would be considered the same in searches.
Sphinx doesn't allow partial index updates for field data...
How do I log ALL exceptions globally for a C# MVC4 WebAPI app?
...e, including the one in the test action you have shown. So all you have to do is handle this exception inside the Application_Error event. In the sample code you have shown you are only handling exception of type HttpException which is obviously not the case with the Convert.ToInt32("a") code. So ma...