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How to create a windows service from java app
...d as a service on XP and vista. It's been about 8 years since I've used windows in any form and I've never had to create a service, let alone from something like a java app (I've got a jar for the app and a single dependency jar - log4j). What is the magic necessary to make this run as a service? ...
str performance in python
...1855
>>> Timer('"%s" % x', 'x=100').timeit()
0.2169809341430664
Do note that str is still slightly slower, as @DietrichEpp said, this is because str involves lookup and function call operations, while % compiles to a single immediate bytecode:
>>> dis.dis(lambda x: str(x))
9 ...
Setting environment variables for accessing in PHP when using Apache
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in xampp on windows the file will be C:\xampp\apache\conf\extra\httpd-vhosts.conf
– Dung
Apr 3 '17 at 19:09
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How does RegexOptions.Compiled work?
...d the scenes when you mark a regular expression as one to be compiled? How does this compare/is different from a cached regular expression?
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keep rsync from removing unfinished source files
... mass. speed has a fast Internet connection and is running a crawler which downloads a lot of files to disk. mass has a lot of disk space. I want to move the files from speed to mass after they're done downloading. Ideally, I'd just run:
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What's valid and what's not in a URI query?
... and forth reading RFCs and SO questions trying to crack this, but I still don't got jack.
7 Answers
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What is “Power Save Mode” in IntelliJ IDEA and other Jetbrains IDEs?
...x errors will still get highlighted, but iffy code constructs e.g. missing docblocks, assignment inside conditional statements etc will not (assuming you have those inspections enabled). This means that you can save battery power when using your laptop and choose to run the inspections only occasion...
Why is Class.newInstance() “evil”?
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The Java API documentation explains why (http://java.sun.com/javase/6/docs/api/java/lang/Class.html#newInstance()):
Note that this method propagates any exception thrown by the nullary constructor, including a checked exception. Use o...
How to change the DataTable Column Name?
... I just tried this solution now and it works fine - it did not do any changes or wipe out the underlying column data. Maybe something else is happening in your code...
– AshesToAshes
Aug 15 '13 at 15:25
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ValueError: math domain error
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Your code is doing a log of a number that is less than or equal to zero. That's mathematically undefined, so Python's log function raises an exception. Here's an example:
>>> from math import log
>>> log(-1)
Traceback (...