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how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
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Disposing WPF User Controls
...disposable, and I would like to ensure that its dispose method will always get called once the containing window/application is closed. However, UserControl is not disposable. I tried implementing the IDisposable interface and subscribing to the Unloaded event but neither get called when the host ap...
How to detect if a property exists on an ExpandoObject?
In javascript you can detect if a property is defined by using the undefined keyword:
11 Answers
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Using i and j as variables in Matlab
i and j are very popular variable names (see e.g., this question and this one ).
9 Answers
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What are the differences between “=” and “
What are the differences between the assignment operators = and <- in R?
7 Answers
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Why doesn't indexOf work on an array IE8?
...function for Array, to define the exact spec version, run this before trying to use it:
if (!Array.prototype.indexOf)
{
Array.prototype.indexOf = function(elt /*, from*/)
{
var len = this.length >>> 0;
var from = Number(arguments[1]) || 0;
from = (from < 0)
? M...
What is the meaning of the 'g' flag in regular expressions?
What is the meaning of the g flag in regular expressions?
9 Answers
9
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How to switch position of two items in a Python list?
I haven’t been able to find a good solution for this problem on the net (probably because switch, position, list and Python are all such overloaded words).
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Extract a number from a string (JavaScript)
I have a string in JavaScript like #box2 and I just want the 2 from it.
21 Answers
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Force line-buffering of stdout when piping to tee
Usually, stdout is line-buffered. In other words, as long as your printf argument ends with a newline, you can expect the line to be printed instantly. This does not appear to hold when using a pipe to redirect to tee .
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