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Why can a function modify some arguments as perceived by the caller, but not others?
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11 Answers
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How do you test to see if a double is equal to NaN?
... static Double.isNaN(double) method, or your Double's .isNaN() method.
// 1. static method
if (Double.isNaN(doubleValue)) {
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}
// 2. object's method
if (doubleObject.isNaN()) {
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}
Simply doing:
if (var == Double.NaN) {
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}
is not sufficient due to how the IEEE standard for ...
Using 'return' in a Ruby block
I'm trying to use Ruby 1.9.1 for an embedded scripting language, so that "end-user" code gets written in a Ruby block. One issue with this is that I'd like the users to be able to use the 'return' keyword in the blocks, so they don't need to worry about implicit return values. With this in mind, t...
Calculate the median of a billion numbers
... Probably too late if this had been an interview, but never mind:
Machine 1 shall be called the "control machine", and for the sake of argument either it starts with all the data, and sends it in equal parcels to the other 99 machines, or else the data starts evenly distributed between the machines...
How to get a random value from dictionary in python
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14 Answers
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How do I get the current absolute URL in Ruby on Rails?
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Difference between len() and .__len__()?
Is there any difference between calling len([1,2,3]) or [1,2,3].__len__() ?
4 Answers
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Redirect to named url pattern directly from urls.py in django?
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If you are on Django 1.4 or 1.5, you can do this:
from django.core.urlresolvers import revers...
How to use MySQLdb with Python and Django in OSX 10.6?
This is a much discussed issue for OSX 10.6 users, but I haven't been able to find a solution that works. Here's my setup:
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