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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...on. 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 Entry.objects.all():
print e.headline
So your ten million rows are retrieved, all at once, when you first e...
How to set data attributes in HTML elements
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Demo
Reference
From the reference:
jQuery itself uses the .data() method to save information under the names 'events' and 'handle', and also reserves any data name starting with an underscore ('_') for internal use.
It should be noted that jQuery's data() doesn't change the data attribute...
How to convert a LocalDate to an Instant?
I work with the new DateTime API of Java 8.
2 Answers
2
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How does the Comma Operator work
...would be equal to b.
The comma operator has a lower precedence than assignment.
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Explanation of BASE terminology
...ter system cannot guarantee all of the following three properties at the same time:
Consistency
Availability
Partition tolerance
A BASE system gives up on consistency.
Basically available indicates that the system does guarantee availability, in terms of the CAP theorem.
Soft state indicates t...
Difference between UIViewContentModeScaleAspectFit and UIViewContentModeScaleToFill?
...deScaleAspectFill
Scales the content to fill the size of the view. Some portion of the content may be clipped to fill the view’s bounds.
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How can I replace every occurrence of a String in a file with PowerShell?
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Thanks - I get an error "replace : Method invocation failed because [System.Object[]] doesn't contain a method named 'replace'." though?
– amateur
Jun 17 '13 at 9:42
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How to link to specific line number on github
...browser's URL looks like this:
https://github.com/git/git/blob/master/README#L18
If you want multiple lines selected, simply hold down the shift key and click a second line number, like line 20. Looks like this:
And now your browser's URL looks like this:
https://github.com/git/git/blob/maste...
JavaScript open in a new window, not tab
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Give the window a 'specs' parameter with width/height. See here for all the possible options.
window.open(url, windowName, "height=200,width=200");
When you specify a width/height, it will open it in a new window instead of a tab.
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How do you deploy your ASP.NET applications to live servers?
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We have all of our code deployed in MSIs using Setup Factory. If something has to change we redeploy the entire solution. This sounds like overkill for a css file, but it absolutely keeps all environments in sync, and we know exactly what is in production (we deploy to all test and uat envi...