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Removing all non-numeric characters from string in Python
How do we remove all non-numeric characters from a string in Python?
7 Answers
7
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Allow Google Chrome to use XMLHttpRequest to load a URL from a local file
...? In my case, when I opened the same local file in Iceweasel, there was no error. They don't have the same security check as Chrome does? So I'm guessing it's still okay to surf the web in this browser instance.
– WeirdElfB0y
May 8 '16 at 6:27
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Printf width specifier to maintain precision of floating-point value
...ier which can be applied to a floating point specifier that would automatically format the output to the necessary number of significant digits such that when scanning the string back in, the original floating point value is acquired?
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List all sequences in a Postgres db 8.1 with SQL
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The following query gives names of all sequences.
SELECT c.relname FROM pg_class c WHERE c.relkind = 'S';
Typically a sequence is named as ${table}_id_seq. Simple regex pattern matching will give you the table name.
To get last value of a sequence use the ...
What is a plain English explanation of “Big O” notation?
...a notation "Θ" (which is a two-side bound). In my experience, this is actually typical of discussions in non-academic settings. Apologies for any confusion caused.
Big O complexity can be visualized with this graph:
The simplest definition I can give for Big-O notation is this:
Big-O notation is ...
jQuery Mobile: document ready vs. page events
...time you visit some page it will bind events over and over. This is not an error, it is simply how jQuery Mobile handles its pages. For example, take a look at this code snippet:
$(document).on('pagebeforeshow','#index' ,function(e,data){
$(document).on('click', '#test-button',function(e) {
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After Installing Java JDK 7 For Mac OS X - mvn -version still shows java version 1.6.0_31
Oracle released Java JDK 7 on April 26 for Mac OS X. I followed the install instructions and when I do java -version in a terminal window I get:
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php execute a background process
...save them to a web directory:
foreground.php:
<?php
ini_set("display_errors",1);
error_reporting(E_ALL);
echo "<pre>loading page</pre>";
function run_background_process()
{
file_put_contents("testprocesses.php","foreground start time = " . time() . "\n");
echo "<pre>...
MySQL Server has gone away when importing large sql file
... tried to import a large sql file through phpMyAdmin...But it kept showing error
19 Answers
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How can I upgrade specific packages using pip and a requirements file?
...trying to upgrade some packages, notably Django itself, and I'm getting an error about source code conflicts:
10 Answers
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