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Referring to the null object in Python
...often see error messages that mention NoneType and wonder what it is. It's my personal opinion that these messages could simply just mention None by name because, as we'll see shortly, None leaves little room to ambiguity. So if you see some TypeError message that mentions that NoneType can't do thi...
Extract numbers from a string
...
$str = 'In My Cart : 11 12 items';
preg_match_all('!\d+!', $str, $matches);
print_r($matches);
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Set width of a “Position: fixed” div relative to parent div
...inherit;
max-width:inherit;
}
This worked very satisfyingly to solve my problem of making a sticky menu be restrained to the original parent width whenever it got "stuck"
Both the parent and child will adhere to the width:100% if the viewport is less than the maximum width. Likewise, both wil...
Long-held, incorrect programming assumptions [closed]
...know intuitively.
I've realized over time that I'm effectively comparing my knowledge to the collective knowledge of many people, not a single individual and that is a pretty high bar for anyone. Most programmers in the real world have a cache of knowledge that is required to do their jobs and hav...
Google Chrome Extensions - Can't load local images with CSS
... javascript. From docs:
//Code for displaying <extensionDir>/images/myimage.png:
var imgURL = chrome.extension.getURL("images/myimage.png");
document.getElementById("someImage").src = imgURL;
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What are App Domains in Facebook Apps?
I want to add the ability to 'login with Facebook' to my site. But I am confused when I register my site in Facebook Apps. What should I input into App Domains ?
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Use a normal link to submit a form
...
You can't really do this without some form of scripting to the best of my knowledge.
<form id="my_form">
<!-- Your Form -->
<a href="javascript:{}" onclick="document.getElementById('my_form').submit(); return false;">submit</a>
</form>
Example from Here.
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Node package ( Grunt ) installed but not available
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Thank you, adding this to my .bash_profile helped fix my issue!
– Thilak Rao
Feb 11 '14 at 9:21
2
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Ruby class instance variable vs. class variable
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end
def self.shared_things
@shared_things
end
attr_accessor :my_things
def initialize
@my_things = [] # Just for me
end
def family_things
self.class.family_things
end
def shared_things
self.class.shared_things
end
end
class Child < Parent
@shared_thi...
Project management to go with GitHub [closed]
(EDIT: This question is now outdated for my particular issue, as Google Code supports git now and I've converted Protocol Buffers to Mercurial anyway. However, it's still of general interest, IMO.)
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