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Where should signal handlers live in a django project?
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If you're listening to the signals emitted by that model then putting all the listeners there too makes the whole exercise pointless, doesn't it? The point of signals is to decouple. Shouldn't the listeners live with the code that is interested in these remote events?...
Confusion between factor levels and factor labels
...n the factor() function. A factor has only a level attribute, which is set by the labels argument in the factor() function. This is different from the concept of labels in statistical packages like SPSS, and can be confusing in the beginning.
What you do in this line of code
df$f <- factor(df$...
How to not run an example using roxygen2?
...ereas 'dontrun encloses code that should not be run.' I also got a comment by cran maintainers to switch from dontrun to donttest.
– Julian Karch
Jun 25 '18 at 12:38
3
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Hidden Features of Visual Studio (2005-2010)?
...t will select whole words. Alt will change the size of the selection area by one character at a time.
– firedfly
Oct 15 '08 at 13:47
4
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to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh
...se it has no idea what you're doing.
These two problems can be outweighed by benefits in the case of table view cells. After drawRect is called when a view first appears on screen, the contents are cached, and the scrolling is a simple translation performed by the GPU. Because you're dealing with a...
Using Rails 3.1, where do you put your “page specific” JavaScript code?
...rstanding, all of your JavaScript gets merged into 1 file. Rails does this by default when it adds //= require_tree . to the bottom of your application.js manifest file.
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Fixed position but relative to container
... a fixed element can be positioned relatively to its container.
I noticed by accident that when applying
-webkit-transform: translateZ(0);
to the body, it made a fixed child relative to it (instead of the viewport). So my fixed elements left and top properties were now relative to the container....
CABasicAnimation resets to initial value after animation completes
...assigning the animation delegate to "self", your instance will be retained by the animation. So, after calling removeFromSuperview if you forget to remove/destroy the animation by yourself, dealloc for instance will not be called. You'll have a memory leak.
– emrahgunduz
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How can I get WebStorm to recognize Jasmine methods?
...e in a spec/ subdirectory and have the .spec.coffee extension, as required by jasmine-node .
6 Answers
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Sequence contains more than one element
... 1 elerment then you need to look into you data as i suspect that its not by design that you have customers sharing a customernumber.
But to the point i wanted to give you a quick overview.
//success on 0 or 1 in the list, returns dafault() of whats in the list if 0
list.SingleOrDefault();
//suc...