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From: mohammad yaseen Date: Sun Jun 11 23:49:03 2006 Subject: Re: %SVf in perl
Thanks John... >What problem are you trying to solve??? Just i was trying to understand how error messages prints string when SVf is the format specifier. John Peacock <jpeacock@rowman.com> wrote: mohammad yaseen wrote: > Can someone tell how SVf format sprecifer prints a string when it is %_? The "%_" format is a special Perl extension to printf-style formats that knows how to handle extracting the string from an SV (hence SVf - SV format). This includes (if I'm not mistaken) calling mg_get() on any magic objects to get the SV. > What does "%""_" signifies? Is any special mening for this in perl?How this works? In C-code, two strings with whitespace separating them (you just can't see that particular whitespace) just get concatenated together. Hence the following are equivalent: "%_" "%""_" "%" "_" and in fact a newline can be inserted between the two strings and it still won't have any bearing on what the compiler actually perceives (C is whitespace blind). What problem are you trying to solve??? John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4720 Boston Way Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5747 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Attachment: [text/html]
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