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What difference is there between WebClient and HTTPWebRequest classes in .NET?
...raction built on top of HttpWebRequest to simplify the most common tasks. For instance, if you want to get the content out of an HttpWebResponse, you have to read from the response stream:
var http = (HttpWebRequest)WebRequest.Create("http://example.com");
var response = http.GetResponse();
var st...
Calling a parent window function from an iframe
...See window.parent
Returns a reference to the parent of the current window or subframe.
If a window does not have a parent, its parent property is a reference to itself.
When a window is loaded in an <iframe>, <object>, or <frame>, its parent is the window with the element embedd...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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pandas.isnull() (also pd.isna(), in newer versions) checks for missing values in both numeric and string/object arrays. From the documentation, it checks for:
NaN in numeric arrays, None/NaN in object arrays
Quick example:
import pandas as pd
import numpy as np
s = pd.Series(['...
Ruby 2.0.0p0 IRB warning: “DL is deprecated, please use Fiddle”
...emoved all of my gems
(including Rails), and installed Ruby 2.0. In other words, a totally clean re-install. Upon starting IRB, I received this message:
...
How to import other Python files?
How do I import other files in Python?
19 Answers
19
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Time complexity of Sieve of Eratosthenes algorithm
...cals of all numbers up to n), which is O(n log n): see Harmonic number. A more proper upper-bound is n(1/2 + 1/3 + 1/5 + 1/7 + …), that is sum of reciprocals of primes up to n, which is O(n log log n). (See here or here.)
The "find the next prime number" bit is only O(n) overall, amortized — yo...
What is the purpose of setting a key in data.table?
...set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
2 ...
Remove file from the repository but keep it locally
I have a folder which I'd like to remove in my remote repository. I'd like to delete it, but keep the folder in my computer
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How to get String Array from arrays.xml file
...an array that I have in my arrays.xml . When I try to run it in the emulator, I get a force close message.
3 Answers
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Find all files with a filename beginning with a specified string?
I have a directory with roughly 100000 files in it, and I want to perform some function on all files beginning with a specified string, which may match tens of thousands of files.
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