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Why would you use Oracle database? [closed]
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Noone seems to talk about the cost of developers time working with Oracle. Most developers who know any other db hate Oracle, those that don't assume that all DB code and/or ORM tools are difficult to use.
If I started a business that I believed...
Value of i for (i == -i && i != 0) to return true in Java
...ecause integers are negated using the two's complement way.
Using
System.out.println(Integer.toBinaryString(Integer.MIN_VALUE));
you see that Integer.MIN_VALUE is
10000000000000000000000000000000
Taking the negative value is done by first swapping 0 and 1, which gives
01111111111111111111111...
How do you downgrade rubygems?
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Updated November 2011: Now that RVM's out, try running rvm install rubygems <version>.
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byte + byte = int… why?
...h byte, sbyte, short or ushort, just as others have said. This answer is about why those operators aren't defined.
I believe it's basically for the sake of performance. Processors have native operations to do arithmetic with 32 bits very quickly. Doing the conversion back from the result to a byte ...
How can I programmatically get the MAC address of an iphone
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@abc: I recommend you post another question about that. Be better then burying it in comments for a different question.
– PyjamaSam
Mar 24 '09 at 15:21
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JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...lity 2
You misinstalled Java in some other way. Perhaps you installed without admin rights, or tried to simply extract files out of the installer. Try again with the installer and/or more privileges. Or, if you don't want to use the installer, use the .tar.gz Java package instead.
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NUnit vs. Visual Studio 2008's test projects for unit testing [closed]
...e are the pro's of NUnit.
NUnit has a mocking framework.
NUnit can be run outside of the
IDE. This can be useful if you want
to run tests on a non-Microsoft build server,
like CruiseControl.NET.
NUnit has more versions coming out
than visual studio. You don't have
to wait years for a new version.
A...
Skip Git commit hooks
...he pre-commit hook has updated it in the middle; this
has been optimized out when we know we do not run the pre-commit hook.
Davi Lima points out in the comments the git cherry-pick does not support --no-verify.
So if a cherry-pick triggers a pre-commit hook, you might, as in this blog post, h...
How do I execute a stored procedure once for each row returned by query?
... Sometimes the stored procedure is too large or complicated to inline without risking introducing bugs. Where performance isn't the ultimate priority, executing the SP in a cursor loop is often the most practical choice.
– Suncat2000
Jan 23 '19 at 12:54
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Creating a new column based on if-elif-else condition
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To formalize some of the approaches laid out above:
Create a function that operates on the rows of your dataframe like so:
def f(row):
if row['A'] == row['B']:
val = 0
elif row['A'] > row['B']:
val = 1
else:
val = -1
retu...