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How to reuse an ostringstream?
I'd like to clear out and reuse an ostringstream (and the underlying buffer) so that my app doesn't have to do as many allocations. How do I reset the object to its initial state?
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What is a callback URL in relation to an API?
I've been scouring the net, and can't seem to wrap my head around the idea of a callback URL. In my case I have a few callback URLs that I have to define myself. A popular one is a "default callback URL". What is this exactly? Can you give an example in plain english?
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Eager load polymorphic
Using Rails 3.2, what's wrong with this code?
4 Answers
4
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What does FrameLayout do?
I'm new to programming. I was using Graphical Layout then when I was reading xml file, I saw FrameLayout. Then I searched, but I couldn't find something useful. What is FrameLayout and what does it do?
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Chrome Dev Tools - Modify javascript and reload
... possible to modify the JavaScript of a page and then reload the page without reloading the modified JavaScript file (and thus losing modifications)?
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Using 'starts with' selector on individual class names
...ing space in there. Can one use boolean operators in a jquery selector? Ideally, the above would be 'OR' to avoid the (rare and likely avoidable) case where there are more than one class staring with 'apple-'
– DA.
Feb 1 '10 at 17:12
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Does SQLAlchemy have an equivalent of Django's get_or_create?
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That's basically the way to do it, there is no shortcut readily available AFAIK.
You could generalize it ofcourse:
def get_or_create(session, model, defaults=None, **kwargs):
instance = session.query(model).filter_by(**kwargs).firs...
How to undo another user’s checkout in TFS?
As the resident TFS admin, on occasion I am asked to undo a checkout (usually a lock) that a user has on a certain file checked into source control.
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Use a URL to link to a Google map with a marker on it
I want to link to google maps at a particular location with a marker on a particular point.
5 Answers
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Black transparent overlay on image hover with only CSS?
...0; left:0;
background:rgba(0,0,0,0.6);
opacity: 0;
transition: all 1s;
-webkit-transition: all 1s;
}
Use an opacity of 1 when hovering over the pseudo element in order to facilitate the transition:
.image:hover:after {
opacity: 1;
}
END RESULT HERE
If you want to add text on h...