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Django admin: How to display a field that is marked as editable=False' in the model?
...I just created a sample application to reproduce your error (django 2.0.8, python 3.5). This still works fine. Maybe something else is wrong in your app @nerdoc?
– tback
Sep 5 '18 at 13:29
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What is the native keyword in Java for?
...s are also present in many other "VM languages" for the same reasons, e.g. Python, Node.js, Ruby.
Android NDK
The concept is exact the same in this context, except that you have to use Android boilerplate to set it up.
The official NDK repository contains "canonical" examples such as the hello-jn...
Parse (split) a string in C++ using string delimiter (standard C++)
...e if it had returned a vector of elements ["", "bc"]. Using str.split() in Python, it was intuitive to me that it should return an empty string in case delim was found either at the beginning or in the end, but that's just my opinion. Anyway, I just think it should be mentioned
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How many levels of pointers can we have?
... I couldn't get more than 98242 when I tried it. (I did the script in Python, doubling the number of * until I got one that failed, and the preceding one that passed; I then did a binary search over that interval for the first one that failed. The whole test took less than a second to run.)
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How to extract text from a string using sed?
... standard regexp, egrep or grep -e or sed -E use extended regexp, and the python code in the question uses PCRE, (perl common regular expression) GNU grep can use PCRE with -P option.
– Felipe Buccioni
Aug 22 '16 at 13:46
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Does C have a “foreach” loop construct?
...:
item is declared and incremented within the for statement (just like
in Python!).
Seems to work on any 1-dimensional array
All variables created in macro (p, item), aren't visible outside the
scope of the loop (since they're declared in the for loop header).
Disadvantages:
Doesn't work for mult...
Is there a command like “watch” or “inotifywait” on the Mac?
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watchdog is a cross-platform python API for watching files / directories, and it has builtin "tricks" tool that allows you to trigger actions (including shell commands) when events occur (including new added file, removed file and changed file).
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Multiple Updates in MySQL
...when / then" clause and a naive approach with transaction. You may get the python code and results here. The overall conclusion is that the variant with case statement turns out to be twice as fast as two other variants, but it's quite hard to write correct and injection-safe code for it, so I perso...
Pandas read_csv low_memory and dtype options
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@sedeh You can specify dtypes either as python types or as numpy.dtype('unicode'). When you give the dtype option a string, it will try to cast it via the numpy.dtype() factory by default. Specifying 'unicode' will actually not do anything, unicodes are just upcast...
What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
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this mimicks pythons random.choice(seq) function. nice.
– Daren Thomas
Dec 3 '09 at 14:04
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