June 2005
Beginner
480 pages
10h 31m
English
Content preview from SAMS Teach Yourself Perl in 24 Hours THIRD EDITION
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Q&A
| Q1: | The pattern /\W(\w)+\W/ doesn't seem to match all the words on the line, just the ones in the middle. Why? |
| A1: | You're looking for word characters surrounded by nonword characters. The first word of the line—assuming it starts at the beginning of the line—doesn't have a nonword character in front of it. It doesn't have a character in front of it at all. |
| Q2: | What's the difference between m// and //? I don't get it. |
| A2: | There's almost no difference at all. The only difference is that if you decide to specify a pattern delimiter other than /, you can do so only if you precede the pattern with an m—for example, m!pattern!. |
| Q3: | I'm trying to verify that the user typed a number, but /\d*/ doesn't seem to work. It always returns true! |
| A3: | It returns ... |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.