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Return 0 if field is null in MySQL
...t to the insert/update.
This amortises the cost assuming your database is read more often than written (and most of them are).
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How to get value from form field in django framework?
...m.is_valid():
data = myform.cleaned_data
field = data['field']
Also, read the django docs. They are perfect.
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What would be a good docker webdev workflow?
... use data-volumes -v switch. I would use this for development. You can use read-only mounting, so no changes will be made to this directory if you want (your app should store data somewhere else anyway).
docker run -v=/home/user/dev/cmsdir:/var/www/cmsdir:ro image /usr/sbin/apache2
Anyway, for fina...
How to limit depth for recursive file list?
...es, definitely it looks wrong know, it didn't though 6 years ago :D I've already commented on stackoverflow.com/a/25618630/57095 that it should be the accepted answer.
– Alberto Zaccagni
Apr 21 '16 at 16:53
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Is it possible to make the -init method private in Objective-C?
...))];
return nil;
}
[self release] is needed because the object was already allocated. When using ARC the compiler will call it for you. In any case, not something to worry when you are about to intentionally stop execution.
objc_designated_initializer
In case you intend to disable init to fo...
Capistrano error tar: This does not look like a tar archive
...ously, this is probably the 42nd time I'm doing the same google search and reading this answer xD
– Cyril Duchon-Doris
Jun 15 '16 at 15:03
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Where is my .vimrc file?
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These methods work, if you already have a .vimrc file:
:scriptnames list all the .vim files that Vim loaded for you, including your .vimrc file.
:e $MYVIMRC open & edit the current .vimrc that you are using, then use Ctrl + G to view the path in s...
What Are Some Good .NET Profilers?
... good as ANTS (for memory profiling) so I haven't bothered this time. From reading the web sites it looks like it doesn't have the same memory profiling features as the other two.
Both ANTS and the Scitech memory profiler have features that the other doesn't, so which is best will depend upon your ...
Select N random elements from a List in C#
...yle - you're right, on second thought I agree with your answer. I hastily read it at first, and mistakenly thought you were indicating to sequentially choose each element with fixed probability k/n, which would have been wrong - but your adaptive approach appears correct to me. Sorry about that.
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Plot a bar using matplotlib using a dictionary
...ys()) # in python 2.x
plt.show()
Note that the penultimate line should read plt.xticks(range(len(D)), list(D.keys())) in python3, because D.keys() returns a generator, which matplotlib cannot use directly.
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