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Is there a REAL performance difference between INT and VARCHAR primary keys?
Is there a measurable performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables.
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Are the shift operators () arithmetic or logical in C?
...es.
Basically you need to either test your compiler or not rely on it. My VS2008 help for the current MS C++ compiler says that their compiler does an arithmetic shift.
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Why use Ruby's attr_accessor, attr_reader and attr_writer?
...here is also a significant performance advantage to writing attr_reader :a vs. def a; return a; end confreaks.net/videos/…
– Nitrodist
Jan 19 '12 at 19:22
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When to use MongoDB or other document oriented database systems? [closed]
...se they were created for, reinventing so many wheels afterwards. The NoSQL vs. SQL debate shows that many people experience using NoSQL as if they were going back 20-30 years in time, to pre-Codd, pre-relational, pre-SQL times. Or, as Michael Stonebraker puts it: "What Goes Around Comes Around"
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Gson custom seralizer for one variable (of many) in an object using TypeAdapter
...oing to modify fields in your Java object. It's a trade-off of ease-of-use vs flexibility, take your pick.
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Accessing last x characters of a string in Bash
...hen bash unavailable. E.g. upstart script section.
– vskubriev
Mar 29 '17 at 13:39
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Find which commit is currently checked out in Git
... get the hash for use elsewhere, git rev-parse HEAD requires no processing vs. all the garbage alternatives.
– Nick T
Apr 8 '17 at 15:51
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Getting RAW Soap Data from a Web Reference Client running in ASP.net
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This is not working for me in 02/2012 using VS 2010. Anyone know a more up-to-date solution?
– qxotk
Feb 28 '12 at 21:12
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Is it possible to set private property via reflection?
...ork in Silverlight runtimes: msdn.microsoft.com/de-de/library/xb5dd1f1%28v=vs.95%29.aspx
– Marc Wittke
Apr 20 '12 at 10:04
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Python's many ways of string formatting — are the older ones (going to be) deprecated?
...mplement their own __format__. For example, format(Decimal('0.1'), '.20f') vs '%.20f' % Decimal('0.1'). The latter coerces the Decimal to a float.
– Eryk Sun
Nov 19 '12 at 13:58
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