Archive for the ‘Perl’ Category

PBP: 060 Slicing

Monday, November 24th, 2014

Everyone’s favorite set of Perl guideliens tells is not to forget about the awesome power of array slices!  That’s smart, too. (more…)

PBP: 059 Array Indices

Thursday, November 20th, 2014

The PBP reminds us that we can use negative indexes to access arrays in reverse, instead of having to do calculations for it.  It suggests several useful reasons, including readability and getting the interpreter to complain in some cases instead of silently doing the wrong thing.  I don’t feel that strongly about this suggestion, but do follow it. (more…)

PBP: 058 Dollar-Underscore

Monday, November 17th, 2014

Mr. Conway suggests that you be wary of any modification to $_.  Personally, I take it further than that, and try never to use the thing at all. (more…)

PBP: 057 Match Variables

Thursday, November 13th, 2014

Lots of people (not just the Best Practices) tell you never to use the regex match variables.  Listen to them! (more…)

PBP: 056 Localizing Punctuation Variables

Monday, November 10th, 2014

The PBP suggests using local on any changes to one of the global punctuation variables.

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PBP: 055 Punctuation Variables

Thursday, November 6th, 2014

The Best Practice is to ‘use English’ for the uncommon punctuation variables.  This has been a hard thing for me to get used to, but I have found it useful. (more…)

PBP: 054 Initialization

Monday, November 3rd, 2014

Mr. Conway suggests that you initialize any variable you localize. (more…)

PBP: 053 Localization

Thursday, October 30th, 2014

The PBP tells us to localize changes to package variables.  This is usually good sense, and prevents your changes from leaking out and messing with other things. (more…)

PBP: 052 Package Variables

Monday, October 27th, 2014

The PBP suggests avoiding package variables.  I almost can’t think of a reason to use one, so support this suggestion. (more…)

PBP: 051 Lexical Variables

Thursday, October 23rd, 2014

Global Variables; Just Say No.  Well, the PBP’s a little more lenient than that, and actually easier to follow by suggesting, “Avoid using non-lexical variables.” and admitting there are some times you just need a package or global variable. (more…)