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Set the location in iPhone Simulator
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Custom Location lets you enter a Lat/Long value. Bicycle ride, City Run, and Freeway Drive are simulation of a moving location (in Cupertino, of course).
Of course, this does nothing to help with debugging for iOS 4 (or earlier); but it's a definite improvement!
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How do I get the object if it exists, or None if it does not exist?
...go will raise the DoesNotExist exception every time.
The idiomatic way to handle this in python is to wrap it in a try catch:
try:
go = SomeModel.objects.get(foo='bar')
except SomeModel.DoesNotExist:
go = None
What I did do, is to subclass models.Manager, create a safe_get like the code a...
How can I check if a file exists in Perl?
...supported by the file system).
-p
File is a named pipe (FIFO), or Filehandle is a pipe.
-S
File is a socket.
-b
File is a block special file.
-c
File is a character special file.
-t
Filehandle is opened to a tty.
-u
File has setuid bit set.
-g
File has setgid bit set.
-...
In Rails, how do you render JSON using a view?
Suppose you're in your users controller and you want to get a json response for a show request, it'd be nice if you could create a file in your views/users/ dir, named show.json and after your users#show action is completed, it renders the file.
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Add line break to 'git commit -m' from the command line
I am using Git from the command line and am trying to add a line break to the commit message (using git commit -m "" ) without going into Vim.
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psql: FATAL: role “postgres” does not exist
...ep is to check the missing role: What is the output within psql of the command \du ? On my Ubuntu system the relevant line looks like this:
List of roles
Role name | Attributes | Member of
-----------+-----------------------------------+-------...
How to override toString() properly in Java?
Sounds a little stupid, but I need help on my toString() method and it is very irking.
I tried looking up online because the toString is the one where it is screwing up and "not finding Kid constructor #2" even though it is there and I would even do something else and it doesn't work.
Ok that w...
jQuery's .click - pass parameters to user function
...f the functionality introduced in version 1.4.3 of the jQuery click event handler.
It allows you to pass a data map to the event object that automatically gets fed back to the event handler function by jQuery as the first parameter. The data map would be handed to the .click() function as the first...
Right HTTP status code to wrong input
...es:
The 422 (Unprocessable Entity) status code means the server understands the content type of the request entity (hence a 415 (Unsupported Media Type) status code is inappropriate), and the syntax of the request entity is correct (thus a 400 (Bad Request) status code is inappropriate) but was ...
How to study design patterns? [closed]
...reading about them. Take some sample implementations that you find online and build up around them.
A great resource is the Data & Object Factory page. They go over the patterns, and give you both conceptual and real world examples. Their reference material is great, too.
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