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SQLite table constraint - unique on multiple columns

I can find syntax "charts" on this on the SQLite website, but no examples and my code is crashing. I have other tables with unique constraints on a single column, but I want to add a constraint to the table on two columns. This is what I have that is causing an SQLiteException with the message "syn...
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How can I check that a form field is prefilled correctly using capybara?

... Ah, I was missing the .value bit. Thanks! – Marc-André Lafortune May 8 '12 at 18:02 I was having the same problem...
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How can I show the name of branches in `git log`?

...ecent commit of the branch (the tip). All commits in the history are equal and anonymous. If you want named branches so that every commit carries the branch name, you can use Mercurial. – Sampo Smolander Jul 25 '13 at 7:11 ...
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How do I get an HttpContext object from HttpContextBase in ASP.NET MVC 1?

I'm working with some WebForms/MVC-agnostic tools, and I need to get an instance of HttpContext given a reference to an HttpContextBase object. I can't use HttpContext.Current because I need this to work asynchronously as well ( HttpContext.Current returns null during an asynchronous reques...
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Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes

What exactly are process and update in PrimeFaces p:commandXxx components and execute and render in f:ajax tag? ...
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How to set the matplotlib figure default size in ipython notebook?

...e ipython notebook. The display matplotlib figure size is too big for me, and I have to adjust it manually. How to set the default size for the figure displayed in cell? ...
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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?

...cts of the collection type that have been instantiated with attributes and linked to this object through a foreign key, but have not yet been saved. Note: This only works if an associated object already exists, not if it‘s nil! The answer to building in the opposite direction is a ...
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is not JSON serializable

... simplejson and json don't work with django objects well. Django's built-in serializers can only serialize querysets filled with django objects: data = serializers.serialize('json', self.get_queryset()) return HttpResponse(data, conten...
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How to re-open an issue in github?

...I change it to open again ? I read somewhere that I need rights for push and pull operation. Is that true ? 2 Answers ...
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Split a string at uppercase letters

...d: >>> import re >>> re.findall('[A-Z][^A-Z]*', 'TheLongAndWindingRoad') ['The', 'Long', 'And', 'Winding', 'Road'] >>> re.findall('[A-Z][^A-Z]*', 'ABC') ['A', 'B', 'C'] share | ...