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What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
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In the old days, "/opt" was used by UNIX vendors like AT&T, Sun, DEC and 3rd-party vendors to hold "Option" packages; i.e. packages that you might have paid extra money for. I don't recall seeing "/opt" on Berkeley BSD UNIX. They used "/usr/local" for ...
SQL to find the number of distinct values in a column
...gregate function:
SELECT COUNT(DISTINCT column_name) AS some_alias FROM table_name
This will count only the distinct values for that column.
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Best way to assert for numpy.array equality?
...__eq__ returns a new array (so TestCase.assertEqual fails), what is the best way to assert for equality?
6 Answers
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Best/Most Comprehensive API for Stocks/Financial Data [closed]
What is the most recommended free/public API for accessing financial market stats and stock quotes (preferrably real-time quotes)? I'm not too picky about how it's exposed (SOAP, REST, some proprietary XML setup, etc.), as long as it's got some decent documentation.
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Questions every good .NET developer should be able to answer? [closed]
My company is about to hire .NET developers . We work on a variety of .NET platforms: ASP.NET, Compact Framework, Windowsforms, Web Services. I'd like to compile a list/catalog of good questions, a kind of minimum standard to see if the applicants are experienced. So, my question is:
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sqlite3-ruby install error on Ubuntu
I have the following error during sqlite3-ruby install:
19 Answers
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What are the best practices for SQLite on Android?
What would be considered the best practices when executing queries on an SQLite database within an Android app?
10 Answers
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Extracting hours from a DateTime (SQL Server 2005)
I can extract the month and day by using Day(Date()) , Month(Date()) . I can't extract hours, with HOUR(Date()) . I get the following error.
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Convert a negative number to a positive one in JavaScript
Is there a math function in JavaScript that converts numbers to positive value?
16 Answers
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Using @property versus getters and setters
...efer properties. It's what they're there for.
The reason is that all attributes are public in Python. Starting names with an underscore or two is just a warning that the given attribute is an implementation detail that may not stay the same in future versions of the code. It doesn't prevent you fro...