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Does Ruby have a string.startswith(“abc”) built in method?
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340
It's called String#start_with?, not String#startswith: In Ruby, the names of boolean-ish methods...
When to use Amazon Cloudfront or S3
...your content. (Amazon)
The data served by CloudFront may or may not come from S3. Since it is more optimized for delivery speed, the bandwidth costs a little more.
If your user base is localized, you won't see too much difference working with S3 or CloudFront (but you have to choose the right loc...
How to put comments in Django templates
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answered Apr 6 '09 at 0:13
Van GaleVan Gale
40.8k99 gold badges6565 silver badges7878 bronze badges
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UIView's frame, bounds, center, origin, when to use what?
... bounds is using coordinate of the local view (therefore its x and y are 0, but not always), but it's still confusing to me when to use what.
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Python circular importing?
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The easiest way to do so is to use import my_module syntax, rather than from my_module import some_object. The former will almost always work, even if my_module included imports us back. The latter only works if my_object is already defined in my_module, which in a circular import may not be the ...
Finding child element of parent pure javascript
...ernatives to querySelector, like document.getElementsByClassName('parent')[0] if you so desire.
Edit: Now that I think about it, you could just use querySelectorAll to get decendents of parent having a class name of child1:
children = document.querySelectorAll('.parent .child1');
The differenc...
Forcing child to obey parent's curved borders in CSS
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201
According to the specs:
A box's backgrounds, but not its
border-image, are clipped to t...
Project structure for Google App Engine
...ion.
Here I'll post a slightly modified version of the layout/structure from that page. I pretty much follow this pattern myself. You also mentioned you had trouble with packages. Just make sure each of your sub folders has an __init__.py file. It's ok if its empty.
Boilerplate files
These har...
Can a pointer to base point to an array of derived objects?
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150
You cannot index like that. You have allocated an array of Rectangles and stored a pointer to th...
How to delete SQLite database from Android programmatically
I would like to delete the database file from the Android file system programatically? Can I have a shell script launch adb which in turns runs a shell script in the Android space to do the database deletion? Can I get this done from within a JUnit test case (with a system() call)?
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