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Re: Loops, the scalar range operator, and objects

by vladb (Vicar)
on Dec 22, 2001 at 19:57 UTC ( #133968=note: print w/ replies, xml ) Need Help??


in reply to Loops, the scalar range operator, and objects

That's a good piece of rather in-depth discussion ;). And this is the first time that I understood the subtle workings of the range operator. It's really a 'flip-flop' kind of an operator. Here's the way I'd use it:
-----------------

#!/usr/local/bin/perl -w use strict; # TEST for '..' (and '...') operators # # Description of the range operator is found # at the END of this file. # print "TEST 1: Skipping perldoc comments.\n----------------\n"; while (<DATA>) { next if (/^=head/ .. /^=cut/); print $_; } __DATA__ # pretend this is a config file var = 0; var1 = 0; =head this should be skipped by the /^=head/ .. /^=cut/ range operator. some paragraph here some paragraph here =cut var2 = 0;
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Your example with data is also very neat one. I guess one could use the range operator with special objects that serve as data iterators (say, list iterators etc.)

"There is no system but GNU, and Linux is one of its kernels." -- Confession of Faith


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