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What are the differences between type() and isinstance()?
...identity of types and rejects instances of subtypes, AKA subclasses).
Normally, in Python, you want your code to support inheritance, of course (since inheritance is so handy, it would be bad to stop code using yours from using it!), so isinstance is less bad than checking identity of types because...
How to style input and submit button with CSS?
...t;
use
<button type='submit'>
Button was introduced specifically bearing CSS styling in mind. You can now add the gradient background image to it or style it using CSS3 gradients.
Read more on HTML5 forms structure here
http://www.w3.org/TR/2011/WD-html5-20110525/forms.html
Ch...
Why are my CSS3 media queries not working?
...
All three of these were helpful tips, but it looks like I needed to add a meta tag:
<meta content="width=device-width, initial-scale=1" name="viewport" />
Now it seems to work in both Android (2.2) and iPhone all rig...
What is the difference between tree depth and height?
... node" it is not correct , the leaf must be the one which is deepest among all the leaves of the given node.
– mightyWOZ
Jul 14 '16 at 7:53
add a comment
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Determine project root from a running node.js application
...uire.main === module
Because module provides a filename property (normally equivalent to __filename), the entry point of the current application can be obtained by checking require.main.filename.
So if you want the base directory for your app, you can do:
var path = require('path');
var appD...
assign multiple variables to the same value in Javascript
...
Yeah, if doing this with an object, all the variables will be aliases of the object. I.E function MyObj(){this.x=1} var a,b; a = b = new MyObj(); ++a.x will also increment the b.x property.
– AlexMorley-Finch
Mar 10 '14 at...
Could not load file or assembly 'System.Web.Mvc'
...
I just wrote a blog post addressing this. You could install ASP.NET MVC on your server OR you can follow the steps here.
EDIT: (by jcolebrand) I went through this link, then had the same issue as Victor below, so I suggest you also add these:
* Microsoft.Web.Infrastructure
* S...
Xcode source automatic formatting
...ghly dependent on the automatic formatting in Visual Studio 2008. Specifically, I will use the CTRL + K , D keyboard shortcut to force things back into shape after my sloppy implementation.
...
How do I get a background location update every n minutes in my iOS application?
...d with UIApplication:beginBackgroundTaskWithExpirationHandler:
When n is smaller than UIApplication:backgroundTimeRemaining it will work just fine. When n is larger, the location manager should be enabled (and disabled) again before there is no time remaining to avoid the background task being kille...
How to 'bulk update' with Django?
...ings like incrementing rows:
from django.db.models import F
Entry.objects.all().update(n_pingbacks=F('n_pingbacks') + 1)
See the documentation.
However, note that:
This won't use ModelClass.save method (so if you have some logic inside it won't be triggered).
No django signals will be emitte...