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How to set up a PostgreSQL database in Django
...is answer is that django.db.backends.postgresql dosn't work with psycopg2. what worked is django.db.backends.postgresql_psycopg2 back end and avoided specifying port number as it change every time you start pgAdmin on windows
– Mustapha-Belkacim
Aug 1 '19 at 21...
how to remove the dotted line around the clicked a element in html
... previously i never get this problem till now. but now i am in confused so what is the the reason previous to present ?
– Durga Rao
Nov 16 '13 at 11:51
17
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Encode URL in JavaScript?
..., @ etc. These 2 methods are not to be used interchangeable, you must know what you are encoding to use the right method.
– Buu Nguyen
Mar 6 '13 at 19:32
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How do you pass a function as a parameter in C?
... will apply the function it is passed to the numbers 0-4. Consider, first, what the loop would look like to call print directly:
for ( int ctr = 0 ; ctr < 5 ; ctr++ ) {
print(ctr);
}
Since func's parameter declaration says that f is the name for a pointer to the desired function, we recall f...
How to convert float to varchar in SQL Server
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I got ************************* . What's that? :)
– hgulyan
Sep 15 '10 at 9:13
4
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How to justify a single flexbox item (override justify-content)
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What if I want one item to be on the left, and the other one in the center?
– Fahmi
Jan 18 '18 at 3:48
4
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Start thread with member function
... can't figure out any syntax that works - the compiler complains no matter what. What is the correct way to implement spawn() so that it returns a std::thread that executes test() ?
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Is duplicated code more tolerable in unit tests?
...ll/nuget package has 3rd party consumers, it doesn't have to be a web api. What I referred to is that it's very common to declare public classes and members that are not supposed to be used directly by library consumers (or at best make them internal and annotate assembly with InternalsVisibleToAttr...
PermGen elimination in JDK 8
...is now using native memory for the representation of class metadata. - and what memory HotSpot JVM used previously? And what is the 'native memory' exaclty?
– Andrey M. Stepanov
May 20 '18 at 22:00
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pandas: multiple conditions while indexing data frame - unexpected behavior
...m.
That's right. Remember that you're writing the condition in terms of what you want to keep, not in terms of what you want to drop. For df1:
df1 = df[(df.a != -1) & (df.b != -1)]
You're saying "keep the rows in which df.a isn't -1 and df.b isn't -1", which is the same as dropping every ...