Re: Testing a string for a range of characters

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Re: Re: Testing a string for a range of characters by BoredByPolitics (Scribe) on Jan 25, 2001 at 14:28 UTC
I'm at home today, with a much slower machine (P166 64Mb, linux 2.2.18pre21, Perl 5.005_03), so I've reduced the number of iterations to a million. These benchmarks are also with the compl routine checking the length() of the test character first, and with the regex fixed - `Benchmark: timing 1000000 iterations of compl, exist, regex, tr... compl: 17 wallclock secs (17.35 usr + 0.02 sys = 17.37 CPU) exist: 15 wallclock secs (14.02 usr + 0.01 sys = 14.03 CPU) regex: 18 wallclock secs (18.62 usr + 0.00 sys = 18.62 CPU) tr: 16 wallclock secs (16.67 usr + 0.01 sys = 16.68 CPU)` [download] So, faster than the regex, but still not as fast as the exist() method. Thanks for the suggestion though :-) Pete	[reply] [d/l]
Re: Re: Testing a string for a range of characters by chipmunk (Parson) on Jan 25, 2001 at 21:02 UTC
Here are two ways to use tr/// to get a complete solution to the problem, checking both the length and the contents of the string: `length $test_char == 1 and $test_char =~ tr/A-Z//;` `$test_char =~ tr/A-Z// == 1 and $test_char =~ tr/A-Z//c == 0;`	[reply] [d/l] [select]