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How to create a unique index on a NULL column?
...rdingly. It's actually a failure in in SQL Server to honor various SQL specifications: here is a link for a request for the "correct implementation" for what it is worth: connect.microsoft.com/SQLServer/feedback/details/299229/….
– user166390
Aug 8 '10 at 5:0...
Logging levels - Logback - rule-of-thumb to assign log levels
...he fix probably requires human intervention. The "2AM rule" applies here- if you're on call, do you want to be woken up at 2AM if this condition happens? If yes, then log it as "error".
warn: an unexpected technical or business event happened, customers may be affected, but probably no immediate h...
What does -XX:MaxPermSize do?
Specifically, why would it help to fix a PermGen OutOfMemoryError issue?
3 Answers
3
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XPath to select multiple tags
Given this simplified data format:
4 Answers
4
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Python 2.7: Print to File
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If you want to use the print function in Python 2, you have to import from __future__:
from __future__ import print_function
But you can have the same effect without using the function, too:
print >>f1, 'This is a t...
What is a Python equivalent of PHP's var_dump()? [duplicate]
... is to do
from pprint import pprint
pprint(globals())
pprint(locals())
If you are running in CGI, a useful debugging feature is the cgitb module, which displays the value of local variables as part of the traceback.
shar...
How to get Enum Value from index in Java?
... Note that will clone a copy of the values array each time, so if you are calling this in the inner loop of performance sensitive code you might want to make a static copy and use that.
– Christopher Barber
Oct 4 '13 at 0:11
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What are unit tests, integration tests, smoke tests, and regression tests?
...ests, integration tests, smoke tests, and regression tests? What are the differences between them and which tools can I use for each of them?
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How to remove the default link color of the html hyperlink 'a' tag?
... color:#00A0C6;
text-decoration:none;
cursor:pointer;
}
if text-decoration doesn't work then include
text-decoration: none !important;
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How do I calculate the normal vector of a line segment?
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if we define dx=x2-x1 and dy=y2-y1, then the normals are (-dy, dx) and (dy, -dx).
Note that no division is required, and so you're not risking dividing by zero.
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