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What is a practical use for a closure in JavaScript?
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The example you give is an excellent one. Closures are an abstraction mechanism that allow you to separate concerns very cleanly. Your example is a case of separating instrumentation (counting calls) from semantics (an error-reporting API). Other uses ...
How to use SVN, Branch? Tag? Trunk?
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The subversion book is an excellent source of information on strategies for laying out your repository, branching and tagging.
See also:
Do you continue development in a branch or in the trunk
Branching strategies
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
...'s inline help:
\h ALTER TABLE
Also documented in the postgres docs (an excellent resource, plus easy to read, too).
ALTER TABLE tablename ADD CONSTRAINT constraintname UNIQUE (columns);
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What exactly is Apache Camel?
...);
}
See also this and this and Camel in Action (as others have said, an excellent book!)
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What is digest authentication?
...sent over the wire.
HA1 = MD5(username:realm:password)
Wikipedia has an excellent article on this topic
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How can I test https connections with Django as easily as I can non-https connections using 'runserv
...ango-extensions
It has dependencies on Werkzeug (so you get access to the excellent Werkzeug debugger) and pyOpenSSL (only required for ssl mode) so to install run:
pip install django-extensions Werkzeug pyOpenSSL
Add it to INSTALLED_APPS in your projects settings.py file:
INSTALLED_APPS = (
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How to add a custom loglevel to Python's logging facility
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@Eric S.
Eric S.'s answer is excellent, but I learned by experimentation that this will always cause messages logged at the new debug level to be printed -- regardless of what the log level is set to. So if you make a new level number of 9, if you call s...
What is the difference between association, aggregation and composition?
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The article is excellent
– ProgrammingHobby
Sep 20 at 17:23
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Visual Studio Immediate window: how to see more than the first 100 items
...ties, where all are displayed. Then Ctrl-A and Copy. You can then paste in excel to get an organized list of properties and their values.
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When to delete branches in Git?
...t works; though, if you're interested, the documentation for git-rebase is excellent. Do note that git rebase rewrites history, so it should be used judiciously, especially if you are new to it. Finally, your 2011_Hotfix scenario is about a dev team, not a solo dev. If project team members use git r...