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What are the rules for calling the superclass constructor?
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I removed 'explicit' from the SuperClass constructor. Despite being a best practice for single-argument constructors, it wasn't germane to the discussion at hand. For more info on the explicit key word, see: weblogs.asp.net/kennykerr/ar...
nano error: Error opening terminal: xterm-256color
After the installation of OSX Lion, I tried to:
10 Answers
10
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Why do I get AttributeError: 'NoneType' object has no attribute 'something'?
...eans that an assignment or function call up above failed or returned an unexpected result.
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Using ECMAScript 6
...e but most browsers don't support functionality that I'm looking for. For example Firefox is the only browser that supports arrow functions.
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Generating an Excel file in ASP.NET [closed]
...NET codebehind) that will allow a user to get data returned to them as an Excel file, which I will generate based on database data. While there are several ways of doing this, each has its own drawbacks. How would you return the data? I'm looking for something that's as clean and straightforwar...
Flattening a shallow list in Python [duplicate]
...erate over a flattened version of the data structure and don't need an indexable sequence, consider itertools.chain and company.
>>> list_of_menuitems = [['image00', 'image01'], ['image10'], []]
>>> import itertools
>>> chain = itertools.chain(*list_of_menuitems)
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Custom Python list sorting
...d smaller than,
equal to, or larger than the second argument: cmp=lambda x,y:
cmp(x.lower(), y.lower()). The default value is None.
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Determine if string is in list in JavaScript
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You can call indexOf:
if (['a', 'b', 'c'].indexOf(str) >= 0) {
//do something
}
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Why does 2 mod 4 = 2?
...ign % is often used for the modulo operator, in lieu of the word mod.
For x % 4, you get the following table (for 1-10)
x x%4
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1 1
2 2
3 3
4 0
5 1
6 2
7 3
8 0
9 1
10 2
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How to get a random value from dictionary in python
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That will work in Python 2.x where d.keys() is a list, but it won't work in Python 3.x where d.keys() is an iterator. You should do random.choice(list(d.keys())) instead.
– Duncan
Feb 1 '11 at 9:42
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