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Logical operators (“and”, “or”) in DOS batch
...
You can do and with nested conditions:
if %age% geq 2 (
if %age% leq 12 (
set class=child
)
)
or:
if %age% geq 2 if %age% leq 12 set class=child
You can do or with a separate variable:
set res=F
if %hour% leq 6 se...
How to duplicate virtualenv
...t to install (or have already installed in case of file generated by pip), and what versions they're at.
To generate a requirements file, go into your original virtualenv, and run:
pip freeze > requirements.txt
This will generate the requirements.txt file for you. If you open that file up in ...
What is “loose coupling?” Please provide examples
... uses a CartContents class to keep track of the items in the shopping cart and an Order class for processing a purchase. The Order needs to determine the total value of the contents in the cart, it might do that like so:
Tightly Coupled Example:
public class CartEntry
{
public float Price;
...
Can HTML be embedded inside PHP “if” statement?
...dition is true</a>
<?php endif; ?>
By request, here's elseif and else (which you can also find in the docs)
<?php if($condition) : ?>
<a href="http://yahoo.com">This will only display if $condition is true</a>
<?php elseif($anotherCondition) : ?>
more h...
How do I remove background-image in css?
...ssary as the declaration with #a is more precise than a declaration of div and therefore this rule will be applied instead of the general div rule.
– Ruud
Sep 22 '09 at 16:20
1
...
How to get function parameter names/values dynamically?
...ttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions_and_function_scope/arguments:
The arguments object is not an Array. It is similar to an Array, but does not have any Array properties except length. For example, it does not have the pop method. However it can be converted t...
How to select where ID in Array Rails ActiveRecord without exception
... this is my preferred solution, it seems cleaner than the exception handling route
– Sam Saffron
Sep 17 '09 at 23:25
5
...
Detecting touch screen devices with Javascript
...
+1 for doing hover and click both. One other way could be using CSS media queries and using some styles only for smaller screens / mobile devices, which are the ones most likely to have touch / tap functionality. So if you have some specific st...
How to run a PowerShell script without displaying a window?
...he window called PsRun.exe that does exactly that. You can download source and exe file Run scheduled tasks with WinForm GUI in PowerShell. I use it for scheduled tasks.
Edited: as Marco noted this -windowstyle parameter is available only for V2.
...
How to turn off caching on Firefox?
...
Enter "about:config" into the Firefox address bar and set:
browser.cache.disk.enable = false
browser.cache.memory.enable = false
If developing locally, or using HTML5's new manifest attribute you may have to also set the following in about:config -
browser.cache.offline....