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Is there a REAL performance difference between INT and VARCHAR primary keys?
...asurable 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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Objective-C parse hex string to integer
I would like to know how to parse a hex string, representing a number, in Objective-C. I am willing to use both an objective, or a C-based method, either is fine.
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How do I check if an integer is even or odd? [closed]
How can I check if a given number is even or odd in C?
31 Answers
31
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What's the Android ADB shell “dumpsys” tool and what are its benefits?
I'm looking for the full list of ADB shell dumpsys commands with a full explanation of all of the commands.
4 Answers
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Grep not as a regular expression
I need to search for a PHP variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
6 ...
How to initialize an array in Java?
I am initializing an array like this:
10 Answers
10
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How do I print out the contents of an object in Rails for easy debugging?
I think I'm trying to get the PHP equivalent of print_r() (print human-readable); at present the raw output is:
8 Answers...
Else clause on Python while statement
...ause is only executed when your while condition becomes false. If you break out of the loop, or if an exception is raised, it won't be executed.
One way to think about it is as an if/else construct with respect to the condition:
if condition:
handle_true()
else:
handle_false()
is anal...
Is short-circuiting logical operators mandated? And evaluation order?
...unless you have a very specific requirement. You can do it, but it may break expected behaviour in other people's code, especially if these operators are used indirectly via instantiating templates with the type overloading these operators.
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Tomcat: How to find out running tomcat version
I'm trying to get Appfuse + tomcat + jRebel working.
27 Answers
27
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