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What is a higher kinded type in Scala?
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Adriaan's "Type Constructor Polymorphism" article now at adriaanm.github.com/research/2010/10/06/…
– Steven Shaw
Jun 6 '12 at 7:39
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Forced naming of parameters in Python
...ameters after _p=__named_only_start must be provided by name only (unless knowledge about the special sentinel object __named_only_start is obtained and used).
Pros:
Parameters are explicit in number and meaning (the later if good names are also chosen, of course).
If the sentinel is specified a...
Timeout a command in bash without unnecessary delay
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Right, I see that now. And it meets my exact requirements if you set the poll interval == timeout. Also works in pipelines, works with the whole thing backgrounded, works with multiple instances and other jobs running. Sweet, thanks!
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Installing Python 3 on RHEL
...t instance to the system default with an altinstall:
$ make altinstall
Now if you want an alternative installation directory, you can pass --prefix to the configurecommand.
Example: for 'installing' Python in /opt/local, just add --prefix=/opt/local.
After the make install step: In order to u...
Wrap a delegate in an IEqualityComparer
...f your ignore problems with defining a correct hashcode), but I'd like to know if there is an out-of-the-box solution.
13 A...
How do I integrate Ajax with Django applications?
...eturn the index.html and replace all the variables as asked (you probably know all this by now).
Now let's talk about AJAX. AJAX calls are client-side code that does asynchronous requests. That sounds complicated, but it simply means it does a request for you in the background and then handles the ...
What's the (hidden) cost of Scala's lazy val?
...o Java 1.4. Since Java 1.5 volatile keyword has a bit stricter meaning and now such double checking is OK.
– iirekm
Sep 28 '11 at 8:21
8
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How do I create some kind of table of content in GitHub wiki?
...here is one catch in creating links. They have to be lower case. I didn't know that and was wondering why my TOC isn't working. I used #Headers instead of #headers. I thought it was a typo in your answer. Perhaps you can add to your answer this information.
– t3chb0t
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How to avoid .pyc files?
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From "What’s New in Python 2.6 - Interpreter Changes":
Python can now be prevented from
writing .pyc or .pyo files by
supplying the -B switch to the Python
interpreter, or by setting the
PYTHONDONTWRITEBYTECODE environment
variable before running the
interpreter. This setting is...
Creating a singleton in Python
... http://googletesting.blogspot.com/2008/08/root-cause-of-singletons.html:
Now, there is one kind of Singleton which is OK. That is a singleton where all of the reachable objects are immutable. If all objects are immutable than Singleton has no global state, as everything is constant. But it is so e...