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Referring to the null object in Python
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SyntaxError: cannot assign to keyword
It's therefore safe to assume that all None references are the same. There isn't any "custom" None.
To test for None use the is operator
When writing code you might be tempted to test for Noneness like this:
if value==None:
pass
Or to test for falsehood l...
Is unsigned integer subtraction defined behavior?
... not restricted to overflow of the upper bound of the type, and applies equally to values too low to be represented.
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How to implement the --verbose or -v option into a script?
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def verboseprint(*args):
# Print each argument separately so caller doesn't need to
# stuff everything to be printed into a single string
for arg in args:
print arg,
print
else:
verboseprint = lambda *a: None # do-nothing function
(Yes, y...
What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
I've recently started using LINQ quite a bit, and I haven't really seen any mention of run-time complexity for any of the LINQ methods. Obviously, there are many factors at play here, so let's restrict the discussion to the plain IEnumerable LINQ-to-Objects provider. Further, let's assume that any...
Why does the C# compiler not fault code where a static method calls an instance method?
The following code has a static method, Foo() , calling an instance method, Bar() :
3 Answers
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jQuery: How can i create a simple overlay?
How can I create a really basic overlay in jQuery without UI?
7 Answers
7
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Deleting all files in a directory with Python
I want to delete all files with the extension .bak in a directory. How can I do that in Python?
7 Answers
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Pythonic way to print list items
I would like to know if there is a better way to print all objects in a Python list than this :
11 Answers
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How do I use HTML as the view engine in Express?
...will work, but to serve out HTML, there is no need to use a view engine at all, unless you want to set up funky routing. Instead, just use the static middleware:
app.use(express.static(__dirname + '/public'));
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what is the difference between a portlet and a servlet?
...s for web containers (and servlets). Though there are definitely strong parallels between these two standards they differ in containers, APIs, life cycle, configuration, deployment, etc.
The main difference between portlet vs. servlet could be that while servlet always responds to single type of a...