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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
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From here:-
Cascading Remove
Marking a reference field with CascadeType.REMOVE (or Ca...
Understanding repr( ) function in Python
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166
>>> x = 'foo'
>>> x
'foo'
So the name x is attached to 'foo' string. When ...
\d is less efficient than [0-9]
I made a comment yesterday on an answer where someone had used [0123456789] in a regular expression rather than [0-9] or \d . I said it was probably more efficient to use a range or digit specifier than a character set.
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Using parameters in batch files at Windows command line
...through the command line can be accessed in batch files with the notation %1 to %9. There are also two other tokens that you can use:
%0 is the executable (batch file) name as specified in the command line.
%* is all parameters specified in the command line -- this is very useful if you want to fo...
Draw Circle using css alone [duplicate]
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168
You could use a .before with a content with a unicode symbol for a circle (25CF).
.circle...
Is there a way to quickly capitalize the variable name in Eclipse
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Windows
After you press Alt+Shift+R as mentioned by kostja, you can select the text you want t...
How to make a variadic macro (variable number of arguments)
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answered Mar 25 '09 at 2:16
Alex BAlex B
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What is the best way to detect a mobile device?
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How to 'bulk update' with Django?
....models import F
Entry.objects.all().update(n_pingbacks=F('n_pingbacks') + 1)
See the documentation.
However, note that:
This won't use ModelClass.save method (so if you have some logic inside it won't be triggered).
No django signals will be emitted.
You can't perform an .update() on a slice...
What does “@” mean in Windows batch scripts
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It means not to output the respective command. Compare the following two batch files:
@echo f...