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NULL vs nil in Objective-C
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nil should only be used in place of an id, what we Java and C++ programmers would think of as ...
Can I call a constructor from another constructor (do constructor chaining) in C++?
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C++11: Yes!
C++11 and onwards has this same feature (called delegating constructors).
The s...
How can I join elements of an array in Bash?
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edited Sep 4 at 21:18
answered Jul 24 '13 at 18:07
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Do I need elements in persistence.xml?
...d persistence classes.
In the case of Hibernate, have a look at the Chapter2. Setup and configuration too for more details.
EDIT: Actually, If you don't mind not being spec compliant, Hibernate supports auto-detection even in Java SE. To do so, add the hibernate.archive.autodetection property:
<p...
Is there documentation for the Rails column types?
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2 Answers
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Active
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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edited Aug 2 '17 at 10:42
a_horse_with_no_name
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Starting python debugger automatically on error
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edited Jun 1 '18 at 21:05
Ivan Castellanos
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How to know if an object has an attribute in Python
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2448
Try hasattr():
if hasattr(a, 'property'):
a.property
EDIT: See zweiterlinde's answer b...
Git Commit Messages: 50/72 Formatting
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Regarding the “summary” line (the 50 in your formula), the Linux kernel documentation has...
What is digest authentication?
...03 Forbidden (access denied).
Digest authentication is standardized in RFC2617. There's a nice overview of it on Wikipedia:
You can think of it like this:
Client makes request
Client gets back a nonce from the server and a 401 authentication request
Client sends back the following response arra...