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How to check if a variable is set in Bash?
... to a non-empty value, whereas specifying the empty string should make the script use an empty extension or list of additional properties.
The distinction may not be essential in every scenario though. In those cases [ -z "$var" ] will be just fine.
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pip installing in global site-packages instead of virtualenv
...l unsure as to what caused it.
Try checking your bin/pip and bin/activate scripts. In bin/pip, look at the shebang. Is it correct? If not, correct it. Then on line ~42 in your bin/activate, check to see if your virtualenv path is right. It'll look something like this
VIRTUAL_ENV="/Users/me/path/to...
select2 - hiding the search box
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Version 4.0.3
Try not to mix user interface requirements with your JavaScript code.
You can hide the search box in the markup with the attribute:
data-minimum-results-for-search="Infinity"
Markup
<select class="select2" data-minimum-results-for-search="Infinity"></select>
Exam...
jQuery UI “ $(”#datepicker“).datepicker is not a function”
...ry.noConflict();
$j("#datepicker").datepicker();
Also make sure your javascript includes are in the correct order so the jquery core library is defined before the jquery.ui. I've had that cause issues.
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About Android image and asset sizes
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Based on kcoppock's answer I have created the following shell script to automatically resize all images to the correct size and copy them in the respective Android drawable-* - folders!
Create a shell script and paste the following code:
createAndroidImages.sh
#!/bin/bash
read -p "P...
PHP - how to best determine if the current invocation is from CLI or web server?
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I did a research: if you invoke the script with php-cgi this won't work. In turn, it will return cgi-fcgi String. If you load the script as a web page from a browser, you'll get apache2handler. Hope this helps. I needed to use php-cgi in order to introduce $_GE...
A cron job for rails: best practices?
What's the best way to run scheduled tasks in a Rails environment? Script/runner? Rake? I would like to run the task every few minutes.
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What's HTML character code 8203?
...es the character code (HTML) &#8203; ? I found it in one of my jQuery scripts and wondered what it was..
8 Answers
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jQuery - select all text from a textarea
...et/NM62A/
Code:
<textarea id="foo">Some text</textarea>
<script type="text/javascript">
var textBox = document.getElementById("foo");
textBox.onfocus = function() {
textBox.select();
// Work around Chrome's little problem
textBox.onmouseup = func...
Difference between Visual Basic 6.0 and VBA
...s for Visual Basic for Applications and so is the small "for applications" scripting brother of VB.
VBA is indeed available in Excel, but also in the other office applications.
With VB, one can create a stand-alone windows application, which is not possible with VBA.
It is possible for developers ho...