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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...te C was close, but not quite.
From the docs:
You can evaluate a QuerySet in the following ways:
Iteration. A QuerySet is iterable, and it executes its database query the first time you iterate over it. For example, this will print the headline of all entries in the database:
for e in ...
Get the time difference between two datetimes
... having a hard time trying to do something that seems simple: geting the difference between 2 times.
19 Answers
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Difference between null and empty (“”) Java String
What is the difference between null and the "" (empty string)?
22 Answers
22
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HttpListener Access Denied
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edited May 8 '19 at 11:58
Håkon K. Olafsen
34177 silver badges2323 bronze badges
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Given a view, how do I get its viewController?
...cumentation for nextResponder:
The UIResponder class does not store or set the next responder automatically, instead returning nil by default. Subclasses must override this method to set the next responder. UIView implements this method by returning the UIViewController object that manages it (i...
What is stdClass in PHP?
Please define what stdClass is.
17 Answers
17
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Convert a byte array to integer in Java and vice versa
...ls the JVM to convert the signed byte into an integer with just those bits set. Otherwise the byte -1 (0xFF) will turn into the int -1 (0xFFFFFFFF). I could be wrong and even if I am it doesn't hurt and makes things clearer.
– coderforlife
Jul 29 '14 at 18:44
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How to Implement DOM Data Binding in JavaScript
...tElementById("foo"), "20");
// simulate some JS based changes.
var i = 0;
setInterval(function() {
obj.change(parseInt(obj.element.value) + ++i);
}, 3000);
DEMO: http://jsfiddle.net/RkTMD/
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What's the @ in front of a string in C#?
This is a .NET question for C# (or possibly VB.net), but I am trying to figure out what's the difference between the following declarations:
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