Optimize Perl
By Martin C. Brown2005-04-11
String Handling
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If you are using static strings in your application a lot -- for example, in a Web application -- remember to use single quotes rather than doubles. Double quotes force Perl to look for a potential interpolation of information, which adds to the overhead of printing out the string:
print 'A string','another string',"\n";
I've also used commas to separate arguments rather than using a period to concatenate the string first. This simplifies the process; print simply sends each argument to the output file. Concatenation would concatenate the string and print it as one argument.
Tutorial Pages:
» Squeeze the Most From Your Code
» Sloppy Programming, Sloppy Performance
» Approaching Optimization
» Use References
» String Handling
» Loops
» Sorts
» Using Short Circuit Logic
» Use AutoLoader
» Using Bytecode and the Compiler Back Ends
» Other Tools
» Putting it All Together
» Resources
First published by IBM DeveloperWorks
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