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How SID is different from Service name in Oracle tnsnames.ora
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Quote by @DAC
In short: SID = the unique name of
your DB, ServiceName = the alias used
when connecting
Not strictly true. SID = unique name of the INSTANCE (eg the oracle process running on the machine). Oracle considers the "Databas...
Accessing Object Memory Address
When you call the object.__repr__() method in Python you get something like this back:
9 Answers
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#ifdef replacement in the Swift language
In C/C++/Objective C you can define a macro using compiler preprocessors.
Moreover, you can include/exclude some parts of code using compiler preprocessors.
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“Cannot evaluate expression because the code of the current method is optimized” in Visual Studio 20
I am using Visual Studio 2010 in debug mode and I have "optimize code" unchecked. I can't quick watch (or hover on) any variable in the debugger. I get this error "Cannot evaluate expression because the code of the current method is optimized".
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Android accelerometer accuracy (Inertial navigation)
I was looking into implementing an Inertial Navigation System for an Android phone, which I realise is hard given the accelerometer accuracy, and constant fluctuation of readings.
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Creating an abstract class in Objective-C
I'm originally a Java programmer who now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible?
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differentiate null=True, blank=True in django
When we add a database field in django we generally write:
18 Answers
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How to delete items from a dictionary while iterating over it?
Is it legitimate to delete items from a dictionary in Python while iterating over it?
10 Answers
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Are static class variables possible in Python?
Is it possible to have static class variables or methods in Python? What syntax is required to do this?
21 Answers
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How to output a multiline string in Bash?
How can I output a multipline string in Bash without using multiple echo calls like so:
7 Answers
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