On Sun, May 28, 2006 at 03:08:07PM -0700, John W. Krahn wrote: > tom arnall wrote: > > On Sunday 28 May 2006 12:20 am, John W. Krahn wrote: > >>tom arnall wrote: > >>>the following code: > >>> > >>> $_='abcd'; > >>> @f = /(x)(y)|(a)(b)/; > >>> > >>>makes the first two cells of '@f' to be undefined, then puts 'a' and 'b' > >>>in the third and fourth cells. how do i get the system to put 'a' and 'b' > >>>in the first two cells and to produce no undefined cells? > >> > >> @f = grep defined, /(x)(y)|(a)(b)/; > > > > yes. solves my problem. how did you find out about this? > > By programming in Perl for many years. :-)
Did it also teach you why that's necessary? -- Chad Perrin [ CCD CopyWrite | http://ccd.apotheon.org ] Ben Franklin: "As we enjoy great Advantages from the Inventions of others we should be glad of an Opportunity to serve others by any Invention of ours, and this we should do freely and generously." -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
