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Initializing a static std::map in C++
... if you are making an archive). That's the reason I try not to use it. I know you can choose what files to include/not include, but you usually don't want to have to worry about Boost's cross dependencies with itself so you just copy the whole thing around.
– bobobobo
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Django - Circular model import issue
...m django.db.models import get_model
Theme = get_model('themes', 'Theme')
Now you can use Theme
For Django 1.7+:
from django.apps import apps
apps.get_model('app_label.model_name')
share
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impro...
How do lexical closures work?
...
There is one problem with this solution: func has now two parameters. That means it doesn't work with a variable amount of parameters. Worse, if you call func with a second parameter this will overwrite the original i from the definition. :-(
– Pascal
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what is reverse() in Django
...rendered as:
<a href="/foo/">link which calls some_view</a>
Now say you want to do something similar in your views.py - e.g. you are handling some other url (not /foo/) in some other view (not some_view) and you want to redirect the user to /foo/ (often the case on successful form sub...
Convert SVG to PNG in Python
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Hi. Do you know how can i do the same but without writing to a file? I need to push png content to the browser from a webserver, so that way the user can download the image. Saving the png file is not a valid option in our project, that'...
What is the difference between dict.items() and dict.iteritems() in Python2?
...or backwards compatibility.
One of Python 3’s changes is that items() now return iterators, and a list is never fully built. The iteritems() method is also gone, since items() in Python 3 works like viewitems() in Python 2.7.
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Get records with max value for each group of grouped SQL results
...wers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL syntax error with the message "non aggregated columns are not listed in the group by clause" or similar. Because this solution uses undocumented behavior, the more cautious may want to include a test to ...
.aspx vs .ashx MAIN difference
What are the differences between .aspx and .ashx pages?
I use ashx now when I need to handle a request that was called from code and returned with a response, but I would like a more technical answer please.
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Convert unix time to readable date in pandas dataframe
...sense. Pandas: Converting to Timestamps goes through it pretty nicely also now I know about to_datetime.
– W A Carnegie
Oct 7 '13 at 22:55
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How to properly assert that an exception gets raised in pytest?
...nstantly evolves and with one of the nice changes in the recent past it is now possible to simultaneously test for
the exception type (strict test)
the error message (strict or loose check using a regular expression)
Two examples from the documentation:
with pytest.raises(ValueError, match='mu...