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How does MySQL process ORDER BY and LIMIT in a query?
...ments, the first argument specifies the offset of the first row to return, and the second specifies the maximum number of rows to return. The offset of the initial row is 0 (not 1):
SELECT * FROM tbl LIMIT 5,10; # Retrieve rows 6-15
To retrieve all rows from a certain offset up to the end of the...
How to add multiple objects to ManyToMany relationship at once in Django ?
...mber of arguments, not a list of them.
add(obj1, obj2, obj3, ...)
To expand that list into arguments, use *
add(*[obj1, obj2, obj3])
Addendum:
Django does not call obj.save() for each item but uses bulk_create(), instead.
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How to get all properties values of a JavaScript Object (without knowing the keys)?
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If you're reading this answer and you might be possibly dealing with strings, you should definitely punch javascript in the face.
– user1228
Jan 28 '16 at 14:35
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Tar archiving that takes input from a list of files
...lude flag allows this. Assuming your comment lines start with a '#', a command such as the following would ignore / exclude any attempted file operations on lines containing cmments, i.e. your command can look like this: tar -cvf allfiles.tar --exclude='^#' -T mylist.txt. Tar reports an error, but w...
What does the double colon (::) mean in CSS?
...asses (like :hover, :first-child, :not etc). It's best to use : for before and after pseudo elements since the single colon has better browser support, namely in earlier IE versions.
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How do you configure Django for simple development and deployment?
...l together with a settings.py file that firstly imports settings_local.py, and then one of the other two. It decides which to load by two settings inside settings_local.py - DEVELOPMENT_HOSTS and PRODUCTION_HOSTS. settings.py calls platform.node() to find the hostname of the machine it is running ...
Unique ways to use the Null Coalescing operator [closed]
I know the standard way of using the Null coalescing operator in C# is to set default values.
16 Answers
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Software keyboard resizes background image on Android
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Ok I fixed it by using
android:windowSoftInputMode="stateVisible|adjustPan"
entry inside <Activity > tag in manifest file. I think it was caused by having ScrollView inside the Activity.
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How to stop EditText from gaining focus at Activity startup in Android
I have an Activity in Android, with two elements:
52 Answers
52
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What does int argc, char *argv[] mean?
In many C++ IDE's and compilers, when it generates the main function for you, it looks like this:
8 Answers
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