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Moving decimal places over in a double
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If you use double or float, you should use rounding or expect to see some rounding errors. If you can't do this, use BigDecimal.
The problem you have is that 0.1 is not an exact representation, and by performing the calculat...
Ways to eliminate switch in code [closed]
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Switch-statements are not an antipattern per se, but if you're coding object oriented you should consider if the use of a switch is better solved with polymorphism instead of using a switch statement.
With polymorphism, this:
foreach (var animal in zoo) {
switch (typeof(a...
.Net HttpWebRequest.GetResponse() raises exception when http status code 400 (bad request) is return
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It would be nice if there were some way of turning off "throw on non-success code" but if you catch WebException you can at least use the response:
using System;
using System.IO;
using System.Web;
using System.Net;
public class Test
{
s...
Casting to string in JavaScript
... the jQuery source code, and they are all in use .
I would like to know if there are any differences between them:
8 Ans...
How can strings be concatenated?
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What happens if you want a multi line string concatenation?
– pyCthon
Nov 28 '13 at 19:52
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How to generate a core dump in Linux on a segmentation fault?
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This depends on what shell you are using. If you are using bash, then the ulimit command controls several settings relating to program execution, such as whether you should dump core. If you type
ulimit -c unlimited
then that will tell bash that its programs can ...
Sublime Text 2: How to delete blank/empty lines
...p in Hugo's answer is correct when there is no spaces in the line. In case if there are space regexp can be ^\s+$
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How to get a user's client IP address in ASP.NET?
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As others have said you can't do what you are asking. If you describe the problem you are trying to solve maybe someone can help?
E.g.
are you trying to uniquely identify your users?
Could you use a cookie, or the session ID perhaps instead of the IP address?
Edit The ad...
Numpy matrix to array
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If you'd like something a bit more readable, you can do this:
A = np.squeeze(np.asarray(M))
Equivalently, you could also do: A = np.asarray(M).reshape(-1), but that's a bit less easy to read.
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How to use XPath in Python?
...he calls to freeDoc() and xpathFreeContext(). This is not very Pythonic.
If you are doing simple path selection, stick with ElementTree ( which is included in Python 2.5 ). If you need full spec compliance or raw speed and can cope with the distribution of native code, go with libxml2.
Sample of ...