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Python's json module, converts int dictionary keys to strings
...ne of those subtle differences among various mapping collections that can bite you. JSON treats keys as strings; Python supports distinct keys differing only in type.
In Python (and apparently in Lua) the keys to a mapping (dictionary or table, respectively) are object references. In Python they ...
How to get value of selected radio button?
...= document.getElementById('rates').value;
The rates element is a div, so it won't have a value. This is probably where the undefined is coming from.
The checked property will tell you whether the element is selected:
if (document.getElementById('r1').checked) {
rate_value = document.getElement...
Why do I get “Pickle - EOFError: Ran out of input” reading an empty file?
...es is an empty dict already
if os.path.getsize(target) > 0:
with open(target, "rb") as f:
unpickler = pickle.Unpickler(f)
# if file is not empty scores will be equal
# to the value unpickled
scores = unpickler.load()
Also open(target, 'a').close() is d...
What's the recommended approach to resetting migration history using Django South?
I've accumulated quite a few migrations using South (0.7) and Django (1.1.2) which are starting to consume quite a bit of time in my unit tests. I would like to reset the baseline and start a fresh set of migrations. I've reviewed the South documentation , done the usual Google/Stackoverflow search...
How to write a scalable Tcp/Ip based server
I am in the design phase of writing a new Windows Service application that accepts TCP/IP connections for long running connections (i.e. this is not like HTTP where there are many short connections, but rather a client connects and stays connected for hours or days or even weeks).
...
How to make custom error pages work in ASP.NET MVC 4
...
My current setup (on MVC3, but I think it still applies) relies on having an ErrorController, so I use:
<system.web>
<customErrors mode="On" defaultRedirect="~/Error">
<error redirect="~/Error/NotFound" statusCode="404" />
</cus...
How can I post data as form data instead of a request payload?
In the code below, the AngularJS $http method calls the URL, and submits the xsrf object as a "Request Payload" (as described in the Chrome debugger network tab). The jQuery $.ajax method does the same call, but submits xsrf as "Form Data".
...
Abstract Class vs Interface in C++ [duplicate]
...een interface and abstract class in C++ unlike Java and C#. When would it be more preferrable to use an interface instead of an abstract class in C++? Could you give some examples?
...
error: Unable to find vcvarsall.bat
...ctions here may be dangerous. Consider using the Visual C++ 2008 Express edition or the purpose-built Microsoft Visual C++ Compiler for Python (details) and NOT using the original answer below. Original error message means the required version of Visual C++ is not installed.
For Windows installat...
How do I disable a href link in JavaScript?
...ous </a> 1 2 3 4 <a href="#"> Next </a> and in some conditions I want this tag to be completely disabled.
...