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What is polymorphism, what is it for, and how is it used?
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If you think about the Greek roots of the term, it should become obvious.
Poly = many: polygon = many-sided, polystyrene = many styrenes (a), polyglot = many languages, and so on.
Morph = change or form: morphology = study of biological form, Morpheus = the Greek god of dreams able ...
How can I transform between the two styles of public key format, one “BEGIN RSA PUBLIC KEY”, the oth
... this website to be a good technical explanation of the different formats: https://polarssl.org/kb/cryptography/asn1-key-structures-in-der-and-pem
"BEGIN RSA PUBLIC KEY" is PKCS#1, which can only contain RSA keys.
"BEGIN PUBLIC KEY" is PKCS#8, which can contain a variety of formats.
If you just w...
How to load all modules in a folder?
... at the very least if not f.endswith('__init__.py') to the end of the list comprehension
– Pykler
Feb 28 '13 at 21:12
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Why does .NET use banker's rounding as default?
...on, the decimal.Round method uses a round-to-even algorithm which is not common for most applications. So I always end up writing a custom function to do the more natural round-half-up algorithm:
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How to replace multiple white spaces with one white space
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imo, avoiding regex if your comfortable with them is premature optimization
– Tim Hoolihan
Aug 14 '09 at 20:05
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LINQ to SQL Left Outer Join
...uld you help me in solving my sql query to linq conversion : stackoverflow.com/questions/28367941/…
– Vishal I Patil
Feb 9 '15 at 7:35
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JUnit test for System.out.println()
...als("hello again", errContent.toString());
}
I used this code to test the command line option (asserting that -version outputs the version string, etc etc)
Edit:
Prior versions of this answer called System.setOut(null) after the tests; This is the cause of NullPointerExceptions commenters refer to....
Test whether a glob has any matches in bash
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Bash specific solution:
compgen -G "<glob-pattern>"
Escape the pattern or it'll get pre-expanded into matches.
Exit status is:
1 for no-match,
0 for 'one or more matches'
stdout is a list of files matching the glob.
I think this is t...
What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...em basically duplicates the lookup functionality, which is the bulk of the computation in this case.
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variable === undefined vs. typeof variable === “undefined”
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