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Using printf with a non-null terminated string
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Does the ternary operator exist in R?
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String comparison in Python: is vs. == [duplicate]
I noticed a Python script I was writing was acting squirrelly, and traced it to an infinite loop, where the loop condition was while line is not '' . Running through it in the debugger, it turned out that line was in fact '' . When I changed it to !='' rather than is not '' , it worked fine.
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Using sed and grep/egrep to search and replace
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Lightweight Javascript DB for use in Node.js [closed]
Anybody know of a lightweight yet durable database, written in Javascript, that can be used with Node.js.
11 Answers
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Best Practice to Organize Javascript Library & CSS Folder Structure [closed]
...enerally, your application will be comprised of HTML, CSS, Images, and Javascript files. Some of those files will be specific to your application and some others can be used across multiple applications. This is a very important distinction. To do an effective grouping of your files you must start b...
How to check if mysql database exists
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If you are looking for a php script see below.
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
die('Not connected : ' . mysql_error());
}
// make foo the current db
$db_selected = mysql_select_db('foo', $link);
if (!...
Import error: No module name urllib2
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For a script working with Python 2 (tested versions 2.7.3 and 2.6.8) and Python 3 (3.2.3 and 3.3.2+) try:
#! /usr/bin/env python
try:
# For Python 3.0 and later
from urllib.request import urlopen
except ImportError:
#...
Calling a JavaScript function named in a variable [duplicate]
I have a JavaScript variable which contains the name of a JavaScript function. This function exists on the page by having been loaded in and placed using $.ajax, etc.
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How do I clear all options in a dropdown box?
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If you wish to have a lightweight script, then go for jQuery.
In jQuery, the solution for removing all options will be like:
$("#droplist").empty();
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