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Re: count number of lines with +

by sundialsvc4 (Abbot)
on Jul 22, 2014 at 15:24 UTC ( #1094646=note: print w/replies, xml ) Need Help??


in reply to count number of lines with +

Also don’t overlook the possibility of using a command-line utility.   For example, the egrep -c regex_pattern utility is available in Unix/Linux land, and comparable facilities are finally also available in Windows PowerShell.

Use care in building your regex.   For example, do you or do you not want to count lines which contain only a plus-sign in the first position, i.e. followed directly by end-of-line rather than a space?   It will be a really good idea to construct a very short test-file, four or five lines long, which will thoroughly exercise all of the possibilities that you are (and are not ...) looking for, and whose right-answers are known in advance.   Carefully consider every “edge case,” and include them in your test-data file.   “Trust, but Verify.”   Write the command-line (or the Perl), then prove that it works.

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[Lady_Aleena]: Right now, I'm trying to decide whether I want to rewrite how variables are entered in the sub I'm working on.
[shmem]: wait, what? you want that person to read the documentation for you?
[Lady_Aleena]: I might have to go with options instead of a straight list.
[Discipulus]: if more than 3 go for named variables LA
[Lady_Aleena]: Discipulus, it is at 2 now, but with what I am thinking about, it could go to 3. However, only 1 is needed. The second and third are optional.
[shmem]: straight list or named parameters - that depends on whether (and how many) optional arguments you have
[Discipulus]: if so a plain list is ok, imho
[Lady_Aleena]: shmem, I already have the plugin installed, just not active.
[shmem]: if you have 1 optional argument, place that at the end of the list. If you have more, go for named parameters.
[Lady_Aleena]: 1 manditory, 2 optional.

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